View
7
Download
0
Category
Preview:
Citation preview
Flexible Shaft Couplings, Clutches and Collars
Flex
ible
Sha
ft C
oupl
ings
,C
lutc
hes
and
Col
lars
8
Section Contents
Couplings and Collars Overview ..........................................Page 82
ReliaFlex® Micro Couplings ....................................................Page 88
ReliaFlex® Precision Couplings, Set Screw Type ................Page 810
ReliaFlex® Precision Couplings, Clamp Type ......................Page 812
ReliaFlex® Couplings, ReliaGrip™ Clamp Type ................Page 814
Custom ReliaFlex® Couplings ................................................Page 816
Stocked ReliaFlex® Couplings................................................Page 817
Bellows Couplings ....................................................................Page 818
Flexible Disc Spring Couplings................................................Page 824
Oldham Couplings ....................................................................Page 830
Membrane Couplings ................................................................Page 832
Curved Jaw Couplings..............................................................Page 836
Micro Spiral Beam Couplings ..................................................Page 838
Spiral Beam Couplings ............................................................Page 839
Spiral Beam Stainless Steel Couplings ..................................Page 844
Radial Tooth Couplings ............................................................Page 846
Friction Clutches ......................................................................Page 847
Solid Couplings ........................................................................Page 851
Double Width Shaft Clamp Collars ..........................................Page 852
Shaft Clamp Collars ..................................................................Page 853
One Piece Threaded Collars ....................................................Page 854
One Piece Set Screw Collars....................................................Page 855
Technical Information................................................................Page T81
ProductOverview
82
Couplings and Collars
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Couplings
and Collars
Introduction to the rangeIn many cases machine designers give limited thought to theshaft coupling. They devote their time to the more expensivecomponents, overlooking the fact that the performance of amachine is only as good as the connections of its shafts. Relianceis fully aware of the importance of the shaft coupling and that theyare often a critical part of the drive system. The Reliance range ofshaft couplings has been carefully designed and tested to providetrouble free operation over many millions of cycles.
Perfect alignment is not practical in applications where two shafts need to be joined and therefore somelevel of misalignment will always occur. This misalignment is usually the result of the support blockmanufacturing tolerances and structural alignment. Unless these tolerances are very precise use of asolid coupling will result in high shaft loading and significant bearing loads. In certain cases thismisalignment is limited to angular or radial misalignments, but is more often a combination of the two.Therefore, careful shaft coupling selection is important as differing configurations of coupling aredesigned to perform very differently dependent upon the application, and, as a consequence, have verydifferent benefits and drawbacks.
Reliance engineers have many years of experience working with and specifying shaft couplings and arevery happy to offer applications advice on coupling selection.
ReliaFlex®
The ReliaFlex® range of couplings is an aluminium alloy, one piece configuration, which has beendesigned inhouse at Reliance to provide very smooth transmission of motion, high torsional stiffness,low bearing loads, and long life. The patented slot pattern was developed after many months of analysisand test to provide the best balance between zero backlash, torsional stiffness and low bearing load,whilst attaining an operational life in excess of 50,000,000 cycles at rated load and 80% offset. With twosets of identical slots, the ReliaFlex® coupling is constant velocity by design and handles angular,parallel and axial offset. Available in sizes from 6 to 40 mm outside diameter and allowable speeds upto 70,000 rpm, the ReliaFlex® coupling provides a very reliable one piece coupling design thatapproaches the performance of a bellows coupling.
Also for customers that require a modified or completely bespoke ReliaFlex® coupling, Reliance hasdeveloped a unique computerbased design and performance prediction tool. This tool allows ourengineers to experiment quickly with different coupling configurations and to design a coupling to meeteither space envelope restrictions or performance requirements.
OldhamOldham couplings are ideal where high degrees of parallel misalignment are present, assembly accessis restricted and electrical insulation is required. Their construction of aluminium alloy hubs and nylonor acetal centre blocks allows separate assembly of hubs onto shafts and then simple engagement withthe centre block on assembly where shaft movement is restricted. In addition, the construction of thecentre block allows it to act as a torque limiter or overload device.
ProductOverview
83
Couplings and Collars
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Cou
plin
gsan
d C
olla
rs
BellowsMaintenance free zerobacklash bellows couplings are available with three construction options: forhighest accuracy, nickel bellows; for torque transmission, stainless steel bellows; and where space isrestricted, bronze bellows are available down to 12 mm outer diameter. Shaft fixing options are both setscrew and clamp for the stainless steel and nickel bellows options, with the brass bellows optionavailable in clamp type only.
Flexible discA number of different options of flexible disc couplings are available, based on both single and doubledisc spring construction. Please note that single disc spring couplings should only be used where themisalignment between the shafts is restricted to angular and axial. Single disc spring couplings cannotbe used where radial misalignments are present. The RFSXK2213 and 3019 type uses a novel designwhich places the clamps inboard of the disc springs to give the shortest possible overall length. TheRFSXK3850 type has an extended centre piece which allows high radial misalignment capability whilstmaintaining good accuracy of transmission.
Curved jawCurved jaw couplings are available with both set screw and clamp hub type fixing methods. They arean ideal solution for reducing system torque ripple with a choice of three damping elements for high,medium and low torques.
Spiral beamAvailable in stainless steel or aluminium and with a clamp or set screw style fixing, spiral beamcouplings are suitable for general applications. Manufactured in one piece, spiral beam couplings arealso maintenancefree.
Friction clutchesFriction clutches are available with two spring types. For lower torques up to 30 Ncm, the wirecompression spring type should be used. For higher torques up to 120 Ncm, the disc spring version isthe ideal choice.
Radial toothRadial tooth couplings are self centering on assemblyand can be used to transmit high torques. Thesecouplings must not be used where radial and axialmisalignments are present and may require lightlubrication depending on the application conditions.
SolidStainless steel or aluminium solid couplings, in one ortwo piece construction, can be used for connecting twoaccurately aligned shafts. Screws are prevented fromloosening during operation by precision honed boresand Nypatch antivibration hardware, providingsuperior holding strength.
Bespoke coupling designed for amedical dosing machine
ProductOverview
84
Couplings and Collars
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Couplings
and Collars
ReliaFlex® Unique design,maximises torsional stiffnesswithout introducing highbearing loads. Chambered forease of assembly.
Bellows High accuracy, lightduty. Maintenance free.
Radial tooth Positiveconnection, minimal axialmisalignment.
Spiral beam Universal onepiece coupling. Aluminium andstainless steel versionsavailable.
Curved jaw Shockabsorbing, low cost generalpurpose coupling, ideal forreducing torque ripple.
Membrane Light duty, withan insulating fibreglassreinforced centre. Compactoverall length. Zero backlash.
Oldham Large offset,designed to separate forassembly. Electricallyinsulating disc.
Flexible disc spring Idealfor low torque applicationsrequiring accuracy. Bothexternal and internal hubsavailable.
Clamp collars No shaftmarking, integral location face.One or two piece construction.
Solid One and two pieceoptions. Excellent foraccurately aligned shafts withhigh torque loads.
Friction clutches Variabletorque settings. Gearmanufactured to requirement.
Custom Design Designedand manufactured to suit yourapplication, please contact us.
ProductOverview
85
Couplings and Collars
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Cou
plin
gsan
d C
olla
rs
Coupling Feature
Coupling Style
Elec
tric
ally
insu
latin
g
Vibr
atio
n da
mpi
ng
Hig
h re
liabi
lity
No
inhe
rent
bac
klas
h
Torq
ue c
apac
ity
Mis
alig
nmen
t cap
abili
ty
Low
bea
ring
load
Acc
urac
y
Pric
e / p
erfo
rman
ce
ReliaFlex®
Bellows
Flexible disc spring* *
Oldham
Membrane
Curved jaw
Spiral beam
Radial tooth
Friction clutches
Solid
The couplings featured in this catalogue have been carefully selected to accommodate varyingdegrees of shaft misalignment whilst offering minimum distortion of rotation.
No one coupling provides a universal solution but the selection table below summarises the salientperformance features for ease of comparison.
Full details for each coupling can be found on the product pages, with further technical information onpages T81 to T84. If you require technical support please contact us to dicuss your application andwe will be happy to help you select an appropriate coupling.
Comparative star rating:most suitableleast suitable
not applicableplease enquire
*single disc suitable for angular offset only
ProductOverview
86
ReliaFlex® Couplings
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Couplings
and Collars
•• Extend system lifeThe ReliaFlex® coupling introducesnegligible radial and axial bearingloads, extending system life.
• Improve system accuracyThe ReliaFlex® coupling provides excellentkinematic transfer of motion with high torsionalstiffness, zero backlash and constant velocity.
ReliaFlex®, specifically designed and manufactured by Reliance to:
Clampor
Set screw
• Clamp type leaves shafts unmarked• Set screw type where higher speeds are required
Electricallyinsulated
• Protects delicate instruments from powered drive• Available with selected bores on RCL type aluminium couplings, sizes 20
and 25
Customdesigns
• Predictable performances• Available with outer diameters from 6 to 40 mm• Alternative materials may be specified
Please enquire
Please enquire
Shortor
Long
• RCS type (short) where space is limited• RCL type (long) where greater parallel offset and greater accuracy are
required
ReliaGrip™
• The ReliaGrip™ clamp enables ReliaFlex® coupling to be used to itsfull potential. Greater torques can be transmitted without the need to useset screws, which can potentially damage the shaft
Precisionor
Micro
• Precision coupling with outer diameters from 13 to 25 mm• Micro coupling with outer diameters from 6 to 10 mm
The range of ReliaFlex® flexible shaft couplings
UK Number 2316735US Number 6,203,437 B1European Number EP 0922168 B1Japanese Number 4,083,227
Patented ReliaFlex®
ProductOverview
87
ReliaFlex® Couplings
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Cou
plin
gsan
d C
olla
rs
With the latest advances in digital optical scanning speed, professional flatbed scanner manufacturersare demanding more accuracy from their drive systems. A European company with leading edgetechnology in drum and flatbed scanners, image setting and integrated media processor productsuses ReliaFlex® couplings in all their flatbed products. With XY technology, speeds of up to 50 scansper hour and resolutions of up to 5400 dpi, the accuracy and reliability of the ReliaFlex® couplingmakes it the ideal choice.
Prior to the introduction of the ReliaFlex® coupling slight variations in the speed of the CCD elementcaused errors when trying to capture high resolution images. These errors manifest themselves as acolour registration defect, which resulted in an unacceptable banding effect across the image.Although these errors were small (typically 3.0 microns) they could easily be detected by the nakedeye.
The cause of these errors was identified as the flatbed drive system. Introduction of a ReliaFlex®
coupling manufactured from low inertia Grade 7075T6 Aluminium was instrumental in bringing theseregistration defects under control. The unique slit pattern with radial rather than spiral slits gives theReliaFlex® coupling high torsional stiffness and unsurpassed accuracy. However, with ReliaFlex®
couplings high torsional stiffness does not mean high bearing loads, the ReliaFlex® coupling slitpattern has been carefully designed to give low bearing loads in conjunction with its high torsionalstiffness.
Having been tested to 50 million cycles at rated torque, the ReliaFlex® coupling is also ideal for highduty cycle applications such as busy printing and typesetting applications. All in all the ReliaFlex®
coupling has proved itself to be ideal for accurate positioning and responsive servo systems.
Picture perfect scanning with ReliaFlex® coupling
1.5 5 mmBore
88
Micro ReliaFlex® Couplings
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Couplings
and Collars
Associated ProductsShafts: page 112
Bearings: page 121Leadscrews: page 71
Intelligent motors: page 22
All dimensions in mmGeneral tolerances ±0.13 mmMaterial: Aluminium alloy grade 7075T6Finish: Alocrom 1000
Part number selection table
Example Part No: RCS A 8 42 Dimensions(mm)
BasicPartNo
Material Size Standard Bore SizesØB1 and ØB2
(bore tolerance +0.010/0.000)
O/D
ØD
Length
L
HubLength
E
FittedScrew
RCS(short) A
68
10
1.5 22
333
44 5
6.08.0
10.0
9.3511.7013.65
2.803.204.00
M1.2*M1.6M2
RCL(long) A
68
10
1.5 22
333
44 5
6.08.0
10.0
12.5014.5017.00
2.803.204.00
M1.2*M1.6M2
Maximum shaft intrusion when fitted = E+2 mm.* Coupling fitted with stainless steel slotted head set screws.Note: bores may be left unalocromed.
RCL (long type) RCS (short type)
Product options• Alternative bore sizes• Imperial bores• Alternative materials• Custom designs see page 816• Product overview see pages 82 to 87• Selected items in stock, at reduced prices see page 817
1.5 5 mm Bore
89
Micro ReliaFlex® Couplings
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Cou
plin
gsan
d C
olla
rs
BasicPartNo
Material Size Torsional1
StiffnessNm/rad
RadialCompliancemicrons/N
Misalignment MaxInertiagcm2
MaxMass
gParallel
mmAngular
degAxialmm
RCS(short) A
68
10
4.198.70
16.80
21.035.028.0
±0.02±0.05±0.06
±1.7±2.0±2.0
±0.06±0.10±0.17
0.030.110.33
0.651.272.34
RCL(long) A
68
10
4.308.70
16.81
79.0102.0
83.0
±0.04±0.10±0.12
±1.7±2.0±2.0
±0.06±0.10±0.17
0.050.150.43
0.951.663.05
Specifications vary according to bore size. For exact figures, please enquire.1 Typical torsional stiffness.
BasicPartNo
Material Size Typical Torque Capacity MaxSpeedrpm
ReversingNm
Non ReversingNm
PeakNm
RCS(short) A
68
10
0.100.200.30
0.150.300.45
0.250.500.75
70,00040,00035,000
RCL(long) A
68
10
0.100.200.30
0.150.300.45
0.250.500.75
32,00024,00022,000
Specifications vary according to bore size. For exact figures, please enquire.
Technical specification
Torque and speed capacity
Technical support• Zero backlash, reliable onepiece construction• Unique design maximises torsional stiffness without
inducing high bearing loads• Minimal velocity and positional fluctuations• Over 50,000,000 test cycles at rated load and 80% offset
without failure• Maintenance free• Recommended temperature range 80ºC to +80ºC• Technical information see page T81• Installation information see page T83
3 20 mm Bore
810
ReliaFlex® Precision Couplings Set Screw Type
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Couplings
and Collars
Couplings are chambered for ease of assembly and fitted with stainless steel screws.
RCL (long type) RCS (short type)
Maximum shaft intrusion when fitted = E+2 mm. Note: bores may be left unalocromed.
Part number selection table
Example Part No: RCS A 20 85 Dimensions(mm)
BasicPartNo
Material Size Standard Bore SizesØB1 and ØB2
(bore tolerance +0.020/0.000)
O/D
ØD
Length
L
HubLength
E
FittedScrew
RCS(short) A
131620253040
3 44
555
6666
8888
10101010
121212
1515 20
13.016.020.025.030.040.0
16.8019.7521.5025.8030.3035.95
5.005.906.607.609.10
10.60
M2.5M3M4M5M6M8
RCL(long) A
131620253040
3 44
555
6666
8888
10101010
121212
1515 20
13.016.020.025.030.040.0
20.0023.5026.0034.0044.0057.00
5.005.906.607.609.10
10.60
M2.5M3M4M5M6M8
Associated ProductsShafts: page 112
Bearings: page 121Leadscrews: page 71
Intelligent motors: page 22
All dimensions in mmGeneral tolerances ±0.13 mmMaterial: Aluminium alloy grade 7075T6Finish: Alocrom 1000
Product options• Alternative bore sizes• Imperial bores• Alternative materials• Electrically insulated, sizes 20 and 25• ReliaGrip™ clamp type see page 814• Custom designs see page 816• Product overview see pages 82 to 87• Selected items in stock, at reduced prices see page 817
3 20 mm Bore
811
ReliaFlex® Precision Couplings Set Screw Type
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Cou
plin
gsan
d C
olla
rs
BasicPartNo
Material Size Torsional1
StiffnessNm/rad
RadialCompliancemicrons/N
Misalignment MaxInertiagcm2
MaxMass
gParallel
mmAngular
degAxialmm
RCS(short) A
131620253040
45.0067.00
107.50173.60246.10465.20
29.228.923.420.015.413.4
±0.08±0.10±0.12±0.16±0.20±0.25
±2.5±2.5±3.0±3.0±3.5±3.5
±0.30±0.40±0.50±0.70±0.85±1.25
1.13.08.8
24.058.0
220.0
4.748.42
14.6227.5045.9897.30
RCL(long) A
131620253040
53.5081.00
130.00216.10315.10606.20
64.365.162.082.285.089.0
±0.15±0.20±0.25±0.40±0.60±0.95
±2.5±2.5±3.0±3.0±3.5±3.5
±0.30±0.40±0.50±0.70±0.85±1.25
1.33.69.9
33.089.0
370.0
5.8310.3318.2038.4071.82
168.57Specifications vary according to bore size. For exact figures, please enquire. 1 Typical torsional stiffness.
Specifications vary according to bore size. For exact figures, please enquire.
Technical specification
Torque and speed capacityBasicPartNo
Material Size Typical Torque Capacity MaxSpeedrpm
ReversingNm
Non ReversingNm
PeakNm
RCS(short) A
131620253040
0.500.751.302.052.905.50
0.701.151.953.104.408.30
1.201.903.255.207.35
13.80
30,00025,00020,00015,00011,0006,500
RCL(long) A
131620253040
0.500.751.302.052.905.50
0.701.151.953.104.408.30
1.201.903.255.207.35
13.80
20,00017,00015,00012,00010,0006,500
Technical support• Zero backlash, reliable onepiece construction• Unique design maximises torsional stiffness without
inducing high bearing loads• Minimal velocity and positional fluctuations• Over 50,000,000 test cycles at rated load and 80% offset
without failure• Maintenance free• Recommended temperature range 80ºC to +80ºC• Technical information see page T81• Installation information see page T83
3 20 mm Bore
812
ReliaFlex® Precision Couplings Clamp Type
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Couplings
and Collars
Associated ProductsShafts: page 112
Bearings: page 121Leadscrews: page 71
Intelligent motors: page 22
All dimensions in mmGeneral tolerances ±0.13mmMaterial: Aluminium alloy grade 7075T6Finish: Alocrom 1000
Couplings are chambered for ease of assembly and fitted with stainless steel screws.
RCL (long type) RCS (short type)
Maximum shaft intrusion when fitted = E+2 mm. Note: bores may be left unalocromed.
Part number selection table
Example Part No: RCS A 20C 85 Dimensions(mm)
BasicPartNo
Material Size Standard Bore SizesØB1 and ØB2
(bore tolerance +0.020/0.000)
O/D
ØD ØH
Length
L
HubLength
E
FittedScrew
RCS(short) A
13C16C20C25C30C40C
33
444
5555
66666
88888
10101010
121212
1515 20
13.016.020.025.030.040.0
14.518.021.826.932.341.0
16.8019.7521.5025.8030.3035.95
5.005.906.607.609.10
10.60
M1.6M2M2.5M3M4M5
RCL(long) A
13C16C20C25C30C40C
33
444
5555
66666
88888
10101010
121212
1515 20
13.016.020.025.030.040.0
14.518.021.826.932.341.0
20.0023.5026.0034.0044.0057.00
5.005.906.607.609.10
10.60
M1.6M2M2.5M3M4M5
Product options• Alternative bore sizes• Imperial bores• Alternative materials• Electrically insulated, sizes 20 and 25• Set screw fixing• ReliaGrip™ clamp type see page 814• Custom designs see page 816• Product overview see pages 82 to 87• Selected items in stock, at reduced prices see page 817
3 20 mm Bore
813
ReliaFlex® Precision Couplings Clamp Type
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Cou
plin
gsan
d C
olla
rs
BasicPartNo
Material Size Torsional1
StiffnessNm/rad
RadialCompliancemicrons/N
Misalignment MaxInertiag.cm2
MaxMass
gParallel
mmAngular
degAxialmm
RCS(short) A
13C16C20C25C30C40C
45.0067.00
107.50177.60258.10481.20
29.228.923.420.015.413.4
±0.08±0.10±0.12±0.40±0.60±0.95
±2.5±2.5±3.0±3.0±3.5±3.5
±0.30±0.40±0.50±0.70±0.85±1.25
1.02.97.8
23.055.0
200.0
4.48.2
14.327.546.497.2
RCL(long) A
13C16C20C25C30C40C
53.5081.00
133.00223.10330.60627.30
64.365.162.082.285.089.0
±0.15±0.20±0.25±0.40±0.60±0.95
±2.5±2.5±3.0±3.0±3.5±3.5
±0.30±0.40±0.50±0.70±0.85±1.25
1.23.29.0
31.086.0
350.0
5.510.118.738.572.6
168.7Specifications vary according to bore size. For exact figures, please enquire.1 Typical torsional stiffness.
BasicPartNo
Material Size Typical Torque Capacity MaxSpeedrpm
ReversingNm
Non ReversingNm
PeakNm
RCS(short)
orRCL(long)
A
13C16C20C25C30C40C
0.350.550.951.552.404.40
0.550.851.452.353.656.65
0.801.252.453.905.5011.10
12,00010,0007,5005,0003,8002,000
Specifications vary according to bore size. For exact figures, please enquire.
Technical specification
Torque and speed capacity
Technical support• Zero backlash, reliable onepiece construction• Unique design maximises torsional stiffness without
inducing high bearing loads• Minimal velocity and positional fluctuations• Over 50,000,000 test cycles at rated load and 80% offset
without failure• Maintenance free• Recommended temperature range 80ºC to +80ºC• Technical information see page T81• Installation information see page T83
3 12 mm Bore
814
ReliaFlex® Precision Couplings ReliaGrip™ Clamp
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Couplings
and Collars
Associated ProductsShafts: page 112
Bearings: page 121Leadscrews: page 71
Intelligent motors: page 22
All dimensions in mmGeneral tolerances ±0.13 mmMaterial: Aluminium alloy grade 7075T6Finish: Alocrom 1000
Couplings are chambered for ease of assembly and fitted with stainless steel screws.
RCL (long type) RCS (short type)
Example Part No: RCS A 20G 85 Dimensions(mm)
BasicPartNo
Material Size Standard Bore SizesØB1 and ØB2
(bore tolerance +0.020/0.000)
O/D
ØD ØH
Length
L
HubLength
E
FittedScrew
RCS(short) A
13G16G20G25G
33
444
5555
6666
888
1010 12
13.016.020.025.0
14.518.021.826.9
16.8019.7521.5025.80
5.005.906.607.60
M1.6M2M2.5M3
RCL(long) A
13G16G20G25G
33
444
5555
6666
888
1010 12
13.016.020.025.0
14.518.021.826.9
20.0023.5026.0034.00
5.005.906.607.60
M1.6M2M2.5M3
Part number selection table
Maximum shaft intrusion when fitted = E+2 mm.Note: bores may be left unalocromed.
Product options• Alternative bore sizes• Imperial bores• Alternative materials• Electrically insulated• Custom designs see page 816• Product overview see pages 82 to 87
3 12 mm Bore
815
ReliaFlex® Precision Couplings ReliaGrip™ Clamp
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Cou
plin
gsan
d C
olla
rs
BasicPartNo
Material Size Torsional1
StiffnessNm/rad
RadialCompliancemicrons/N
Misalignment MaxInertiagcm2
MaxMass
gParallel
mmAngular
degAxialmm
RCS(short) A
13G16G20G25G
45.0070.00115.00182.00
29.228.923.420.0
±0.08±0.10±0.12±0.16
±2.5±2.5±3.0±3.0
±0.30±0.40±0.50±0.70
1.02.97.9
23.0
4.48.6
14.927.5
RCL(long) A
13G16G20G25G
53.5084.00139.00227.00
64.365.162.082.2
±0.15±0.20±0.25±0.40
±2.5±2.5±3.0±3.0
±0.30±0.40±0.50±0.70
1.23.39.0
31.0
5.510.618.738.5
Specifications vary according to bore size. For exact figures, please enquire.1 Typical torsional stiffness.
BasicPartNo
Material Size Typical Torque Capacity MaxSpeedrpm
ReversingNm
Non ReversingNm
PeakNm
RCS(short)
orRCL(long)
A
13G16G20G25G
0.450.751.302.05
0.601.151.953.10
0.701.653.255.20
12,00010,0007,5005,000
Specifications vary according to bore size. For exact figures, please enquire.
Technical specification
Torque and speed capacity
Technical support• Zero backlash, reliable onepiece construction• Unique design maximises torsional stiffness without
inducing high bearing loads• Minimal velocity and positional fluctuations• Over 50,000,000 test cycles at rated load and 80% offset
without failure• Maintenance free• Recommended temperature range 80ºC to +80ºC• Technical information see page T81• Installation information see page T83
CustomDesigns
816
ReliaFlex® Precision Couplings
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Couplings
and Collars
Provide allowablespace envelope
Provide performancerequirements
ReliaFlex® spaceevaluated
ReliaFlex®
performanceevaluated
Select from Catalogue
StandardCoupling
BespokeCoupling
Customer Enquiry
Bespoke designs
The ReliaFlex® coupling can be customised to suit individual applications. For example, specialinterfaces can be incorporated into the design to allow easier interaction between the coupling and othercomponents within the assembly. Alternative materials such as PEEK polymer and other plastics areavailable.
Reliance’s design engineers can predict the achievableperformance of ReliaFlex® confidently when provided with detailsof the allowable space envelope.
Please contact us to discuss your requirements.
StockedCouplings
817
ReliaFlex® Precision Couplings
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Cou
plin
gsan
d C
olla
rs
The range of couplings below is held in stock and available on short delivery at reduced prices.It is subject to change from time to time, please visit our website at www.reliance.co.uk/shop for thelatest details.
Stocked range of ReliaFlex® couplings
Long type Short typeSize 6RCLA61.51.5RCLA631.5
Size 8RCLA822RCLA833
Size 10RCLA100.2500.250RCLA1055
Size 13RCLA130.2500.250RCLA1344RCLA1365RCLA13C42RCLA13C44RCLA13C66
Size 16RCLA16C44 RCLA16C54RCLA16C66
Size 20RCLA20C66RCLA20C88RCLA20C1010RCLA20C0.2500.250RCLA20C0.2505RCLA20C0.2506
Size 25RCLA25C66RCLA25C88RCLA25C1010RCLA25C0.2500.250RCLA25C0.3750.375RCLA25C0.5000.500
Size 6RCSA61.51.5RCSA631.5
Size 8RCSA822RCSA833
Size 10RCSA1053RCSA1055
Size 13RCSA1344RCSA1353RCSA130.2500.250RCSA13C33RCSA13C55
Size 16RCSA16C66RCSA16C0.2505
Size 20RCSA20C65RCSA20C66RCSA20C88RCSA20C1010
Size 25RCSA25C65RCSA25C66RCSA25C86RCSA25C88
3 16 mm Bore
818
Bellows CouplingsSet Screw Hub
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Couplings
and Collars
Associated ProductsShafts: page 112
Bearings: page 121Leadscrews: page 71
Intelligent motors: page 22
All dimensions in mmGeneral tolerances ±0.13 mm
Part number selection tablePart
NumberHub
MaterialBellowsMaterial
Bore
ØB1
Bore
ØB2
O/D
ØD
Length
L
ScrewPosition
T
ScrewThread
SRBKBS12220303RBKBS12220404RBKBS12220604RBKBS12220505RBKBS12220606
Brass(NickelPlated)
Bronze(NickelPlated)
34656
34456
12 22 2.2 M2.5
RBKXS15200303RBKXS15200404RBKXS15200504RBKXS15200505RBKXS15200606
Aluminium(Anodised)
Stainlesssteel
34556
34456
15 20 2.0 M3
RBKXS15220303RBKXS15220404RBKXS15220504RBKXS15220505RBKXS15220606
Aluminium(Anodised)
Stainlesssteel
34556
34456
15 22 2.0 M3
RBKXS15250303RBKXS15250404RBKXS15250504RBKXS15250505RBKXS15250606
Aluminium(Anodised)
Stainlesssteel
34556
34456
15 25 2.0 M3
RBKXS19240404RBKXS19240505RBKXS19240606RBKXS19240808RBKXS19241010
Aluminium(Anodised)
Stainlesssteel
4568
10
4568
10
19 24 2.0 M3
H8Bore Size Tolerance
3 +0.014456
+0.018
810 +0.022
121416
+0.027
3 16 mm Bore
819
Bellows CouplingsSet Screw Hub
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Cou
plin
gsan
d C
olla
rs
SizeRef
MaxSpeed
min1
MaxTorque
Ncm
Misalignment TorsionalStiffness
Nm/rad
RadialStiffness
N/mm
Momentof Inertia
gcm2
MaxScrewTorque
Ncm
ApproxWeight
g
Radial
mm
Axial
mm
Angular
deg1222
10,000
15 ±0.20 ±0.40 ±2.5 45 30 1.8 50 8.01520 40 ±0.20 ±0.40 ±3.0 90 40 2.0 70 6.01522 40 ±0.25 ±0.45 ±4.0 85 20 2.1 70 6.51525 40 ±0.30 ±0.50 ±4.0 70 15 2.3 70 7.01924 80 ±0.25 ±0.40 ±4.0 150 25 7.0 70 10.02029 80 ±0.25 ±0.40 ±4.0 150 25 8.0 150 15.02035 80 ±0.30 ±0.50 ±4.0 140 10 9.0 150 16.02526 200 ±0.30 ±0.40 ±4.0 220 45 19.0 100 17.5
Technical specifications
Part number selection table continuedPart
NumberHub
MaterialBellowsMaterial
Bore
ØB1
Bore
ØB2
O/D
ØD
Length
L
ScrewPosition
T
ScrewThread
SRBKXS20290404RBKXS20290604RBKXS20290606RBKXS20291006RBKXS20290808RBKXS20291010RBKXS20291210RBKXS20291212
Aluminium(Anodised)
Stainlesssteel
466
108
101212
44668
101012
20 29 3.2 M4
RBKXS20350404RBKXS20350604RBKXS20350606RBKXS20351006RBKXS20350808RBKXS20351010RBKXS20351210
Aluminium(Anodised)
Stainlesssteel
466
108
1012
44668
1010
20 35 3.2 M4
RBKXS25260606RBKXS25260808RBKXS25261010RBKXS25261212RBKXS25261414RBKXS25261616
Aluminium(Anodised)
Stainlesssteel
68
10121416
68
10121416
25 26 2.8 M4
Technical support• Zero backlash• High torsional stiffness and low bearing loads• Complete absorption of eccentricity, angularity and end play
by spring action of the bellows• Maintenance free• Recommended temperature range 30ºC to +120ºC• Product overview see pages 82 to 87• Technical information see page T81
3 16 mm Bore
820
Bellows CouplingsClamp Hub
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Couplings
and Collars
Associated ProductsShafts: page 112
Bearings: page 121Leadscrews: page 71
Intelligent motors: page 22
All dimensions in mmGeneral tolerances ±0.13 mm
Part number selection tablePart
NumberHub
MaterialBellowsMaterial
Bore
ØB1
Bore
ØB2
O/D
ØD
Length
L
ScrewPosition
T
ScrewThread
SRBKXK16220303RBKXK16220404RBKXK16220504RBKXK16220604RBKXK16220505RBKXK16220606
Aluminium(Anodised)
Stainlesssteel
345656
344456
16 22 2.3 M2
RBKXK16240303RBKXK16240603RBKXK16240404RBKXK16240504RBKXK16240604RBKXK16240505RBKXK16240606
Aluminium(Anodised)
Stainlesssteel
3645656
3344456
16 24 2.3 M2
RBKXK16270303RBKXK16270603RBKXK16270404RBKXK16270504RBKXK16270505RBKXK16270606
Aluminium(Anodised)
Stainlesssteel
364556
334456
16 27 2.3 M2
RBKXK21290606RBKXK21291006RBKXK21290808RBKXK21291010
Aluminium(Anodised)
Stainlesssteel
610
810
668
10
21 29 3.0 M2.5
H8Bore Size Tolerance
3 +0.014456
+0.018
810 +0.022
121416
+0.027
3 16 mm Bore
821
Bellows CouplingsClamp Hub
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Cou
plin
gsan
d C
olla
rs
SizeRef
MaxSpeed
min1
MaxTorque
Ncm
Misalignment TorsionalStiffness
Nm/rad
RadialStiffness
N/mm
Momentof Inertia
gcm2
MaxScrewTorque
Ncm
ApproxWeight
g
Radial
mm
Axial
mm
Angular
deg1622
10,000
40 ±0.20 ±0.40 ±3.0 90 40 2.1 50 6.01624 40 ±0.25 ±0.45 ±4.0 85 20 2.2 50 6.51627 40 ±0.30 ±0.50 ±4.0 70 15 2.6 50 7.02129 80 ±0.25 ±0.40 ±4.0 150 25 9.0 100 15.02135 80 ±0.30 ±0.50 ±4.0 140 10 9.5 100 16.02429 80 ±0.25 ±0.40 ±4.0 150 25 15.0 100 17.02435 80 ±0.30 ±0.50 ±4.0 140 10 15.2 100 18.03030 200 ±0.30 ±0.40 ±4.0 220 45 37.0 100 31.0
Technical specifications
Part number selection table continuedPart
NumberHub
MaterialBellowsMaterial
Bore
ØB1
Bore
ØB2
O/D
ØD
Length
L
ScrewPosition
T
ScrewThread
SRBKXK21350606RBKXK21351006RBKXK21350808RBKXK21351010
Aluminium(Anodised)
Stainlesssteel
610
810
668
10
21 35 3.0 M2.5
RBKXK24291206RBKXK24291210RBKXK24291212
Aluminium(Anodised)
Stainlesssteel
121212
61012
24 29 3.0 M2.5
RBKXK24351206RBKXK24351210RBKXK24351212
Aluminium(Anodised)
Stainlesssteel
121212
61012
24 35 3.0 M2.5
RBKXK30301210RBKXK30301212RBKXK30301414RBKXK30301616
Aluminium(Anodised)
Stainlesssteel
12121416
10121416
30 30 3.0 M3
Technical support• Zero backlash• High torsional stiffness and low bearing loads• Complete absorption of eccentricity, angularity and end play
by spring action of the bellows• Maintenance free• Recommended temperature range 30ºC to +120ºC• Technical information see page T81• Product overview see pages 82 to 87
2 12 mm Bore
822
Nickel Bellows Couplings Set Screw Hub
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Couplings
and Collars
SizeRef
MaxSpeed
min1
MaxTorque
Ncm
Misalignment TorsionalStiffness
Nm/rad
RadialStiffness
N/mm
Momentof
Inertiagcm2
MaxScrewTorque
Ncm
ApproxWeight
g
Radial
mm
Axial
mm
Angular
deg1223
10,00013 ±0.54 ±2.29 ±15 28 4.2 1.85 60 10.0
1730 39 ±0.72 ±3.09 ±14 70 3.0 3.81 80 10.02533 200 ±0.46 ±2.77 ±8 210 29.0 16.10 80 19.5
Technical specifications
Associated ProductsShafts: page 112
Bearings: page 121Leadscrews: page 71
Intelligent motors: page 22
All dimensions in mmGeneral tolerances ±0.13 mm
Part number selection tablePart
NumberHub
MaterialBellowsMaterial
Bore
ØB1
Bore
ØB2
O/D
ØD
Length
L
ScrewPosition
T
ScrewThread
SRBKNS12230202RBKNS12230302RBKNS12230303RBKNS12230404RBKNS12230604RBKNS12230606
Stainlesssteel Nickel
233466
223446
12 23 2.0 M2.5
RBKNS17300404RBKNS17300604RBKNS17300606RBKNS17301006RBKNS17300808RBKNS17301010
Aluminium(Anodised) Nickel
466
108
10
44668
10
17 31 2.0 M3
RBKNS25330606RBKNS25331006RBKNS25331206RBKNS25330808RBKNS25331010RBKNS25331212
Aluminium(Anodised) Nickel
61012
81012
6668
1012
25 33 2.3 M3
H8Bore Size Tolerance
23 +0.014
46 +0.018
810 +0.022
12 +0.027
3 12 mm Bore
823
Nickel Bellows Couplings Clamp Hub
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Cou
plin
gsan
d C
olla
rs
SizeRef
MaxSpeed
min1
MaxTorque
Ncm
Misalignment TorsionalStiffness
Nm/rad
RadialStiffness
N/mm
Momentof
Inertiagcm2
MaxScrewTorque
Ncm
ApproxWeight
g
Radial
mm
Axial
mm
Angular
deg1733 10,000 39 ±0.72 ±3.09 ±14 70 3.0 4.89 35 11.52537 200 ±0.46 ±2.77 ±8 210 29.0 25.40 66 28.5
Technical specifications
Part number selection table
All dimensions in mmGeneral tolerances ±0.13 mm
Associated ProductsShafts: page 112Bearings: page 121Leadscrews: page 71Intelligent motors: page 22
PartNumber
HubMaterial
BellowsMaterial
Bore
ØB1
Bore
ØB2
O/D
ØD
Length
L
ScrewPosition
T
ScrewThread
SRBKNK17330303RBKNK17330404RBKNK17330604RBKNK17330606
Aluminium(Anodised) Nickel
3466
3446
16.3 33 2.5 M2
RBKNK25370606RBKNK25371006RBKNK25370808RBKNK25371010RBKNK25371212
Aluminium(Anodised) Nickel
610
81012
668
1012
25 37 2.8 M2.5
H8Bore Size Tolerance
3 +0.01446 +0.018
810 +0.022
12 +0.027
Technical support• Zero backlash• High torsional stiffness and low bearing loads• Complete absorption of eccentricity, angularity and end play
by spring action of the bellows• Maintenance free• Recommended temperature range 30ºC to +120ºC• Technical information see page T81• Product overview see pages 82 to 87
2 6 mm Bore
824
Flexible Disc Spring Couplings Set Screw Hub
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Couplings
and Collars
Associated ProductsShafts: page 112
Bearings: page 121Leadscrews: page 71
Intelligent motors: page 22
All dimensions in mmGeneral tolerances ±0.13 mm
SizeRef
MaxSpeed
min1
MaxTorque
Ncm
Misalignment TorsionalStiffness
Nm/rad
RadialStiffness
N/mm
Momentof
Inertiagcm2
MaxScrewTorque
Ncm
ApproxWeight
g
Radial
mm
Axial
mm
Angular
deg2014 10,000 50 ±0.3 ±2.5 100 2.6 60 5.0
Technical specifications
Part number selection tablePart
NumberHub
MaterialDisc
SpringsMaterial
Bore
ØB1
Bore
ØB2RFSXS20140202RFSXS20140402RFSXS20140404RFSXS20140606
Aluminium(Anodised)
Stainlesssteel
2446
2246
H8Bore Size Tolerance
2 +0.01446 +0.018
Technical support• Zero backlash• High torsional stiffness• Maintenance free• Recommended temperature range 30ºC to +120ºC• Vibration isolation• Technical information see page T81• Product overview see pages 82 to 87
2 6 mm Bore
825
Flexible Disc Spring Couplings Set Screw Hub
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Cou
plin
gsan
d C
olla
rs
All dimensions in mmGeneral tolerances ±0.13 mm
Associated ProductsShafts: page 112Bearings: page 121Leadscrews: page 71Intelligent motors: page 22
Technical specifications
Part number selection tablePart
NumberHub
MaterialDisc
SpringsMaterial
Bore
ØB1
Bore
ØB2RFSXS20160202RFSXS20160402RFSXS20160404RFSXS20160606
Aluminium(Anodised)
Stainlesssteel
2446
2246
SizeRef
MaxSpeed
min1
MaxTorque
Ncm
Misalignment TorsionalStiffness
Nm/rad
RadialStiffness
N/mm
Momentof
Inertiagcm2
MaxScrewTorque
Ncm
ApproxWeight
g
Radial
mm
Axial
mm
Angular
deg2016 10,000 50 ±0.2 ±0.4 ±3.0 20 125 2.8 60 6.0
H8Bore Size Tolerance
2 +0.01446 +0.018
Technical support• Zero backlash• High torsional stiffness and low bearing loads• Maintenance free• Recommended temperature range 30ºC to +120ºC• Vibration isolation• Technical information see page T81• Product overview see pages 82 to 87
2 4 mm Bore
826
Flexible Disc Spring Couplings Clamp Hub
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Couplings
and Collars
SizeRef
MaxSpeed
min1
MaxTorque
Ncm
Misalignment TorsionalStiffness
Nm/rad
RadialStiffness
N/mm
Momentof
Inertiagcm2
MaxScrewTorque
Ncm
ApproxWeight
g
Radial
mm
Axial
mm
Angular
deg2213 10,000 20 ±0.3 ±0.3 ±2.0 14 3.0 3.2 20 9.5
Technical specifications
Part number selection tablePart
NumberHub
MaterialDisc
SpringsMaterial
Bore
ØB1
Bore
ØB2RFSXK22130202RFSXK22130302RFSXK22130303RFSXK22130404
Nickel platedsteel
Stainlesssteel
2334
2234
Associated ProductsShafts: page 112
Bearings: page 121Leadscrews: page 71
Intelligent motors: page 22
All dimensions in mmGeneral tolerances ±0.13 mm
H8Bore Size Tolerance
23 +0.014
4 +0.018
Technical support• Zero backlash• High torsional stiffness and low bearing loads• Maintenance free• Recommended temperature range 30ºC to +120ºC• Vibration isolation• Technical information see page T81• Product overview see pages 82 to 87
3 8 mm Bore
827
Flexible Disc Spring Couplings Clamp Hub
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Cou
plin
gsan
d C
olla
rs
Technical specifications
Part number selection tablePart
NumberHub
MaterialDisc
SpringsMaterial
Bore
ØB1
Bore
ØB2RFSXK30190303RFSXK30190404RFSXK30190505RFSXK30190605RFSXK30190606RFSXK30190806RFSXK30191008
Aluminium(Anodised)
Stainlesssteel
345668
10
3455668
SizeRef
MaxSpeed
min1
MaxTorque
Ncm
Misalignment TorsionalStiffness
Nm/rad
RadialStiffness
N/mm
Momentof
Inertiagcm2
MaxScrewTorque
Ncm
ApproxWeight
g
Radial
mm
Axial
mm
Angular
deg3019 12,000 80 ±0.4 ±0.4 ±3.0 150 6 19 80 16
All dimensions in mmGeneral tolerances ±0.13 mm
Associated ProductsShafts: page 112Bearings: page 121Leadscrews: page 71Intelligent motors: page 22
H8Bore Size Tolerance
3 +0.014456
+0.018
8 +0.022
Technical support• Zero backlash• High torsional stiffness and low bearing loads• Maintenance free• Recommended temperature range 30ºC to +120ºC• Vibration isolation• Technical information see page T81• Product overview see pages 82 to 87
6 14 mm Bore
828
Flexible Disc Spring CouplingsClamp Hub
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Couplings
and Collars
Technical specifications
Part number selection tablePart
NumberHub
MaterialDisc
SpringsMaterial
Bore
ØB1
Bore
ØB2RFSXK38320606RFSXK38329595RFSXK38321010RFSXK38321210RFSXK38321212RFSXK38321412RFSXK38321414
Aluminium(Anodised) Stainless steel
69.531012121414
69.531010121214
SizeRef
MaxSpeed
min1
MaxTorque
Ncm
Misalignment TorsionalStiffness
Nm/rad
RadialStiffness
N/mm
Momentof
Inertiagcm2
MaxScrewTorque
Ncm
ApproxWeight
g
Radial
mm
Axial
mm
Angular
deg3832 8,000 200 ±0.3 ±0.3 ±2.5 250 220 82 100 53
Associated ProductsShafts: page 112
Bearings: page 121Leadscrews: page 71
Intelligent motors: page 22
All dimensions in mmGeneral tolerances ±0.13 mm
H8Bore Size Tolerance
6 +0.0189.5310 +0.022
1214 +0.027
Technical support• Zero backlash• High torsional stiffness and low bearing loads• Maintenance free• Recommended temperature range 30ºC to +120ºC• Vibration isolation• Suitable for high number of revolutions at high torque• Technical information see page T81• Product overview see pages 82 to 87
6 14 mm Bore
829
Flexible Disc Spring CouplingsClamp Hub
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Cou
plin
gsan
d C
olla
rs
Technical specifications
Part number selection tablePart
NumberHub
MaterialDisc
SpringsMaterial
Bore
ØB1
Bore
ØB2RFSXK38500606RFSXK38509595RFSXK38501010RFSXK38501210RFSXK38501212RFSXK38501412RFSXK38501414
Aluminium(Anodised) Stainless steel
69.531012121414
69.531010121214
SizeRef
MaxSpeed
min1
MaxTorque
Ncm
Misalignment TorsionalStiffness
Nm/rad
RadialStiffness
N/mm
Momentof
Inertiagcm2
MaxScrewTorque
Ncm
ApproxWeight
g
Radial
mm
Axial
mm
Angular
deg3850 8,000 200 ±0.8 ±0.8 ±2.5 250 12 106 100 63
All dimensions in mmGeneral tolerances ±0.13 mm
Associated ProductsShafts: page 112Bearings: page 121Leadscrews: page 71Intelligent motors: page 22
H8Bore Size Tolerance
6 +0.0189.5310 +0.022
1214 +0.027
Technical support• Zero backlash• High torsional stiffness and low bearing loads• Maintenance free• Recommended temperature range 30ºC to +120ºC• Vibration isolation• Suitable for high number of revolutions at high torque• Technical information see page T81• Product overview see pages 82 to 87
3 12 mm bore
830
Oldham Couplings
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Couplings
and Collars
M0ST (set screw) M0CT (clamp)
Associated ProductsShafts: page 112
Bearings: page 121Leadscrews: page 71
Intelligent motors: page 22
All dimensions in mmHub material: Aluminium alloygrade 2024 T351 or 7075 T651Finish: Black sulphuric anodised MILA8625 Type II, class 2Spacer material: Acetal or nylon 11
Example Part No: M0ST AT 13 33 Dimensions(mm)
BasicPartNo
DiscMaterial
Size Standard Bore Sizes ØB1 and ØB2
(bore tolerance +0.050/0.000)
O/D
ØD
Length
L
HubLength
E
FittedScrew
T
M0ST(set
screw)
AT(Acetal)
NL(Nylon)
131925 3341
3 44
55
666
888
101010
121212
12.719.125.433.341.3
15.922.228.647.650.8
5.67.69.9
15.018.0
M3M3M4M4M5
M0CT(clamp)
AT(Acetal)
NL(Nylon)
1925 3341
4 5 66
888
101010
121212
19.125.433.341.3
25.431.847.650.8
9.711.915.018.0
M2.5M3M3M4
Part number selection table
Product options• Larger or alternative bore sizes• Imperial bores• Product overview see pages 82 to 87
Note: Oldham couplings sizes 13 and 19 use only two set screws ‘T’
3 12 mm Bore
831
Oldham Couplings
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Cou
plin
gsan
d C
olla
rs
SizeRef
DiscMaterial
TorsionalStiffnessDeg/Nm
Torque Capacity MisalignmentRated
NmBreak
NmParallel
mmAxialmm
13 AT 0.636 0.68 3.9 0.10 0.05NL 2.560 0.17 2.8 0.10 0.05
19 AT 0.380 2.25 10.5 0.20 0.10NL 1.240 0.57 9.6 0.20 0.10
25 AT 0.291 4.75 19.0 0.20 0.10NL 1.110 1.13 15.9 0.20 0.10
33 AT 0.079 8.00 39.5 0.20 0.15NL 0.460 2.05 34.0 0.20 0.15
41 AT 0.068 14.75 54.5 0.25 0.15NL 0.330 3.65 45.3 0.25 0.15
Technical specifications
Technical support• Zero backlash with acetal disc • High parallel misalignment capability• Electrically insulated discs act as a mechanical fuse
preventing damage to other components• Temperature range:
Acetal disc: 23ºC to +65ºC.Nylon disc: 23ºC to +54ºC.
• Max speed: 4,500 rpm• Acetal discs provide high torsional stiffness• Nylon discs provide vibration and shock absorption• Technical information see page T81• Installation information see page T83
6 10 mm Bore
832
Membrane Couplings Clamp Hub
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Couplings
and Collars
Technical specifications
Part number selection tablePart
NumberHub
MaterialMembrane
MaterialBoreØB1
BoreØB2
RFSKK25190606RFSKK25191006RFSKK25190808RFSKK25191010
Aluminium(Anodised)
Polyamide6.6
reinforcedfibreglass
610
810
668
10
SizeRef
MaxSpeed
min1
MaxTorque
Ncm
Misalignment TorsionalStiffness
Nm/rad
RadialStiffness
N/mm
Momentof
Inertiagcm2
MaxScrewTorque
Ncm
ApproxWeight
g
Radial
mm
Axial
mm
Angular
deg2519 12,000 40 ±0.25 ±0.4 ±2.5 22 60 13.5 65 16
Associated ProductsShafts: page 112
Bearings: page 121Leadscrews: page 71
Intelligent motors: page 22
All dimensions in mmGeneral tolerances ±0.13 mm
H8Bore Size Tolerance
6 +0.018810 +0.022
Technical support• Zero backlash• Maintenance free• Recommended temperature range 10ºC to +80ºC• Electrical isolation• Technical information see page T81• Product overview see pages 82 to 87
6 12 mm Bore
833
Membrane CouplingsClamp Hub
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Cou
plin
gsan
d C
olla
rs
Technical specifications
Part number selection tablePart
NumberHub
MaterialMembrane
MaterialBoreØB1
BoreØB2
RFSKK25250606RFSKK25251006RFSKK25250808RFSKK25251010RFSKK25251210RFSKK25251212
Aluminium(Anodised)
Polyamide6.6
reinforcedfibreglass
610
8101212
668
101012
SizeRef
MaxSpeed
min1
MaxTorque
Ncm
Misalignment TorsionalStiffness
Nm/rad
RadialStiffness
N/mm
Momentof
Inertiagcm2
MaxScrewTorque
Ncm
ApproxWeight
g
Radial
mm
Axial
mm
Angular
deg2525 12,000 40 ±0.25 ±0.4 ±2.5 22 60 15 65 18
All dimensions in mmGeneral tolerances ±0.13 mm
Associated ProductsShafts: page 112Bearings: page 121Leadscrews: page 71Intelligent motors: page 22
H8Bore Size Tolerance
6 +0.0188
10 +0.022
12 +0.027
Technical support• Zero backlash• Maintenance free• Recommended temperature range 10ºC to +80ºC• Electrical isolation• Technical information see page T81• Product overview see pages 82 to 87
6 14 mm Bore
834
Membrane CouplingsClamp Hub
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Couplings
and Collars
Technical specifications
Part number selection tablePart
NumberHub
MaterialMembrane
MaterialBoreØB1
BoreØB2
RFSKK30220606RFSKK30221006RFSKK30220808RFSKK30221010RFSKK30221210RFSKK30221212RFSKK30221414
Aluminium(Anodised)
Polyamide6.6
reinforcedfibreglass
610
810121214
668
10101214
SizeRef
MaxSpeed
min1
MaxTorque
Ncm
Misalignment TorsionalStiffness
Nm/rad
RadialStiffness
N/mm
Momentof
Inertiagcm2
MaxScrewTorque
Ncm
ApproxWeight
g
Radial
mm
Axial
mm
Angular
deg3022 12,000 60 ±0.3 ±0.4 ±2.5 30 40 35 80 30
Associated ProductsShafts: page 112
Bearings: page 121Leadscrews: page 71
Intelligent motors: page 22
All dimensions in mmGeneral tolerances ±0.13 mm
H8Bore Size Tolerance
6 +0.018810 +0.022
1214 +0.027
Technical support• Zero backlash• High torsional stiffness and low bearing loads• Maintenance free• Recommended temperature range 10ºC to +80ºC• Electrical isolation• High rigidity• Technical information see page T81• Product overview see pages 82 to 87
6 14 mm Bore
835
Membrane CouplingsClamp Hub
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Cou
plin
gsan
d C
olla
rs
Technical specifications
Part number selection tablePart
NumberHub
MaterialMembrane
MaterialBoreØB1
BoreØB2
RFSKK30270606RFSKK30271006RFSKK30270808RFSKK30271010RFSKK30271210RFSKK30271212RFSKK30271414
Aluminium(Anodised)
Polyamide6.6
reinforcedfibreglass
610
810121214
668
10101214
SizeRef
MaxSpeed
min1
MaxTorque
Ncm
Misalignment TorsionalStiffness
Nm/rad
RadialStiffness
N/mm
Momentof
Inertiagcm2
MaxScrewTorque
Ncm
ApproxWeight
g
Radial
mm
Axial
mm
Angular
deg3027 12,000 60 ±0.3 ±0.4 ±2.5 30 40 37 80 32
All dimensions in mmGeneral tolerances ±0.13 mm
Associated ProductsShafts: page 112Bearings: page 121Leadscrews: page 71Intelligent motors: page 22
H8Bore Size Tolerance
6 +0.0188
10 +0.022
1214 +0.027
Technical support• Zero backlash• High torsional stiffness and low bearing loads• Maintenance free• Recommended temperature range 10ºC to +80ºC• Electrical isolation• High rigidity• Technical information see page T81• Product overview see pages 82 to 87
6 12 mm Bore
836
Curved Jaw Couplings Set Screw Hub
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Couplings
and Collars
Technical specificationsElement
HardnessMax
Speed
min1
MaxTorque
Ncm
Misalignment at 750rpm Twistat MaxTorque
Deg
Momentof
Inertiagcm2
MaxScrewTorque
Ncm
ApproxWeight
g
Radial
mm
Axial
mm
Angular
deg80
19,000800 ±0.22 ±1.0 ±1.3 10 30 120 34
92 1500 ±0.22 ±1.0 ±1.3 10 30 120 3498 2500 ±0.22 ±1.0 ±1.3 10 30 120 34
Associated ProductsShafts: page 112
Bearings: page 121Leadscrews: page 71
Intelligent motors: page 22
All dimensions in mmGeneral tolerances ±0.13 mm
Part number selection table
Example Part No: RKKAS 1500 08 06 92
BasicPart Number
HubMaterial
Damping ElementMaterial
ElementHardness
BoreØB1
BoreØB2
RKKAS15000606RKKAS15000806RKKAS15000808RKKAS15001008RKKAS15001010RKKAS15001210
Aluminium(Anodised) Polyurethane
80 (blue)92 (white)98 (red)
688
101012
6688
1010
H8Bore Size Tolerance
6 +0.018810 +0.022
12 +0.027
Technical support• Zero backlash• Alternative damping element hardness• Maintenance free• Recommended temperature range 30ºC to +80ºC• Torque ripple reduction• Technical information see page T81• Product overview see pages 82 to 87
6 12 mm Bore
837
Curved Jaw Couplings Clamp Hub
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Cou
plin
gsan
d C
olla
rs
Technical specificationsElement
HardnessMax
Speed
min1
MaxTorque
Ncm
Misalignment at 750rpm Twistat MaxTorque
Deg
Momentof
Inertiagcm2
MaxScrewTorque
Ncm
ApproxWeight
g
Radial
mm
Axial
mm
Angular
deg80
19,000800 ±0.22 ±1.0 ±1.3 10 30 150 34
92 1500 ±0.22 ±1.0 ±1.3 10 30 150 3498 2500 ±0.22 ±1.0 ±1.3 10 30 150 34
Part number selection table
All dimensions in mmGeneral tolerances ±0.13 mm
Associated ProductsShafts: page 112Bearings: page 121Leadscrews: page 71Intelligent motors: page 22
Example Part No: RKKAK 1500 08 06 92
BasicPart Number
HubMaterial
Damping ElementMaterial
ElementHardness
BoreØB1
BoreØB2
RKKAK15000606RKKAK15000806RKKAK15000808RKKAK15001008RKKAK15001010RKKAK15001210
Aluminium(Anodised) Polyurethane
80 (blue)92 (white)98 (red)
688
101012
6688
1010
H8Bore Size Tolerance
6 +0.0188
10 +0.022
12 +0.027
Technical supprt• Zero backlash• Alternative damping element hardness• Maintenance free• Recommended temperature range 30ºC to +80ºC• Torque ripple reduction• Technical information see page T81• Product overview see pages 82 to 87
1 5 mm Bore
838
Micro Spiral Beam CouplingsSet Screw Hub
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Couplings
and Collars
Technical specifications
Part number selection table
SizeMax
Speed
min1
MaxTorque
Ncm
Misalignment TorsionalStiffness
Nm/rad
RadialStiffness
N/mm
Momentof
Inertiagcm2
MaxScrewTorque
Ncm
ApproxWeight
g
Radial
mm
Axial
mm
Angular
deg6508 8,000 2 ±0.10 ±0.15 ±2.0 0.55 24 0.02 8 0.51015 15 ±0.15 ±0.20 ±2.0 2.20 22 0.34 15 2.4
Associated ProductsShafts: page 112
Bearings: page 121Leadscrews: page 71
Intelligent motors: page 22
All dimensions in mmGeneral tolerances ±0.13 mm
PartNumber
Material Bore
ØB1
Bore
ØB2
O/D
ØD
Length
L
ScrewPosition
T
ScrewThread
SRWKAS65080101RWKAS65080201RWKAS65080202
Aluminium122
112
6.5 8 1.3 M1.6
RWKAS10150202RWKAS10150302RWKAS10150402RWKAS10150502RWKAS10150303RWKAS10150503
Aluminium
234535
222233
10 15 2.0 M2
H8Bore Size Tolerance
123
+0.014
45 +0.018
Technical support• Zero backlash• High torsional stiffness and low bearing loads• Maintenance free• Recommended temperature range 30ºC to +150ºC• One piece construction• Technical information see page T81• Product overview see pages 82 to 87
2 6 mm Bore
839
Spiral Beam CouplingsSet Screw Hub
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Cou
plin
gsan
d C
olla
rs
Technical specifications
Part number selection table
SizeMax
Speed
min1
MaxTorque
Ncm
Misalignment TorsionalStiffness
Nm/rad
RadialStiffness
N/mm
Momentof
Inertiagcm2
MaxScrewTorque
Ncm
ApproxWeight
g
Radial
mm
Axial
mm
Angular
deg1218 8,000 25 ±0.15 ±0.25 ±2.5 2.8 28 0.83 35 4.01622 40 ±0.20 ±0.30 ±3.0 5.0 34 3.20 50 9.5
All dimensions in mmGeneral tolerances ±0.13 mm
Associated ProductsShafts: page 112Bearings: page 121Leadscrews: page 71Intelligent motors: page 22
PartNumber
Material Bore
ØB1
Bore
ØB2
O/D
ØD
Length
L
ScrewPosition
T
ScrewThread
SRWKAS12180402RWKAS12180303RWKAS12180403RWKAS12180404
Aluminium
4344
2334
12 18 2.5 M2.5
RWKAS16220303RWKAS16220503RWKAS16220404RWKAS16220504RWKAS16220505RWKAS16220606
Aluminium
354556
334456
16 22 3.0 M3
H8Bore Size Tolerance
23 +0.014
456
+0.018
Technical support• Zero backlash• High torsional stiffness and low bearing loads• Maintenance free• Recommended temperature range 30ºC to +150ºC• One piece construction• Technical information see page T81• Product overview see pages 82 to 87
4 14 mm Bore
840
Spiral Beam CouplingsSet Screw Hub
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Couplings
and Collars
Associated ProductsShafts: page 112
Bearings: page 121Leadscrews: page 71
Intelligent motors: page 22
All dimensions in mmGeneral tolerances ±0.13 mm
Part number selection tablePart
NumberMaterial Bore
ØB1
Bore
ØB2
O/D
ØD
Length
L
ScrewPosition
T
ScrewThread
SRWKAS19220404RWKAS19220604RWKAS19220505RWKAS19220606RWKAS19220806RWKAS19220808
Aluminium
465688
445668
19 22 3.0 M3
RWKAS20190604RWKAS20190505RWKAS20190606RWKAS20190806
Aluminium
6568
4566
20 19 2.8 M3
RWKAS25240606RWKAS25240806RWKAS25241006RWKAS25240808RWKAS25241008RWKAS25241010RWKAS25241212
Aluminium(Anodised)
68
108
101012
66688
1012
25 24 3 M4
RWKAS25320606RWKAS25320806RWKAS25321006RWKAS25320808RWKAS25321008RWKAS25321010RWKAS25321210RWKAS25321212
Aluminium(Anodised)
68
108
10101212
66688
101012
25 32 4 M4
H8Bore Size Tolerance
456
+0.018
810 +0.022
1214 +0.027
4 14 mm Bore
841
Spiral Beam CouplingsSet Screw Hub
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Cou
plin
gsan
d C
olla
rs
SizeRef
MaxSpeed
min1
MaxTorque
Ncm
Misalignment TorsionalStiffness
Nm/rad
RadialStiffness
N/mm
Momentof
Inertiagcm2
MaxScrewTorque
Ncm
ApproxWeight
g
Radial
mm
Axial
mm
Angular
deg1922
8,000
60 ±0.25 ±0.4 ±3.5 9 40 6.7 50 132019 60 ±0.25 ±0.4 ±3.5 9 40 6.0 50 122524 100 ±0.30 ±0.5 ±4.0 20 60 22.2 120 262532 100 ±0.30 ±0.5 ±4.0 18 50 30.0 120 353030 150 ±0.30 ±0.5 ±4.0 21 60 57.0 120 453038 150 ±0.30 ±0.5 ±4.0 21 60 76.0 120 60
Technical specifications
Part number selection table continuedPart
NumberMaterial Bore
ØB1
Bore
ØB2
O/D
ØD
Length
L
ScrewPosition
T
ScrewThread
SRWKAS30301010RWKAS30301210RWKAS30301410
Aluminium(Anodised)
101214
101010
30 30 4 M4
RWKAS30381010RWKAS30381210RWKAS30381410RWKAS30381212
Aluminium(Anodised)
10121412
10101012
30 38 5 M4
Technical support• Zero backlash• High torsional stiffness and low bearing loads• Maintenance free• Recommended temperature range 30ºC to +150ºC• One piece construction• Technical information see page T81• Product overview see pages 82 to 87
2 14 mm Bore
842
Spiral Beam CouplingsClamp Hub
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Couplings
and Collars
Associated ProductsShafts: page 112
Bearings: page 121Leadscrews: page 71
Intelligent motors: page 22
All dimensions in mmGeneral tolerances ±0.13 mm
Part number selection tablePart
NumberMaterial Bore
ØB1
Bore
ØB2
O/D
ØD
Length
L
ScrewPosition
T
ScrewThread
SRWKAK14210202RWKAK14210302RWKAK14210303RWKAK14210403RWKAK14210404
Aluminium(Anodised)
23344
22334
14 21 2.6 M2
RWKAK16250303RWKAK16250503RWKAK16250404RWKAK16250604RWKAK16250505RWKAK16250605
Aluminium(Anodised)
354656
334455
16 25 3.0 M2
RWKAK19280404RWKAK19280604RWKAK19280505RWKAK19280605RWKAK19280606
Aluminium(Anodised)
46566
44556
19 28 3.3 M3
RWKAK25320606RWKAK25320806RWKAK25321006RWKAK25320808RWKAK25321008RWKAK25321010RWKAK25321210
Aluminium(Anodised)
68
108
101012
66688
1010
25 32 4.0 M3
H8Bore Size Tolerance
23 +0.014
456
+0.018
810 +0.022
1214 +0.027
2 14 mm Bore
843
Spiral Beam CouplingsClamp Hub
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Cou
plin
gsan
d C
olla
rs
SizeRef
MaxSpeed
min1
MaxTorque
Ncm
Misalignment TorsionalStiffness
Nm/rad
RadialStiffness
N/mm
Momentof
Inertiagcm2
MaxScrewTorque
Ncm
ApproxWeight
g
Radial
mm
Axial
mm
Angular
deg1421
6,000
50 ±0.20 ±0.25 ±3.0 4.5 22 1.9 50 6.51625 60 ±0.20 ±0.30 ±3.5 5.5 30 3.8 50 101928 80 ±0.25 ±0.40 ±4.0 8 36 8.7 80 162532 100 ±0.35 ±0.50 ±4.0 16 45 29.0 100 343038 150 ±0.35 ±0.50 ±4.0 19 60 76.0 100 58
Technical specifications
Part number selection table continuedPart
NumberMaterial Bore
ØB1
Bore
ØB2
O/D
ØD
Length
L
ScrewPosition
T
ScrewThread
SRWKAK30381010RWKAK30381210RWKAK30381212RWKAK30381414
Aluminium(Anodised)
10121214
10101214
30 38 4.8 M4
Technical support• Zero backlash• High torsional stiffness and low bearing loads• Maintenance free• Recommended temperature range 30ºC to +150ºC• One piece construction• Technical information see page T81• Product overview see pages 82 to 87
8 10 mm BoreStainless Steel
844
Spiral Beam CouplingsSet Screw Hub
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Couplings
and Collars
Technical specifications
Part number selection table
SizeRef
MaxSpeed
min1
MaxTorque
Ncm
Misalignment TorsionalStiffness
Nm/rad
RadialStiffness
N/mm
Momentof
Inertiagcm2
MaxScrewTorque
Ncm
ApproxWeight
g
Radial
mm
Axial
mm
Angular
deg2524 8,000 200 ±0.3 ±0.5 ±4.0 40 250 64 200 65
PartNumber
Material BoreØB1
BoreØB2
RWKXS25240808RWKXS25241010
Stainlesssteel
810
810
Associated ProductsShafts: page 112
Bearings: page 121Leadscrews: page 71
Intelligent motors: page 22
All dimensions in mmGeneral tolerances ±0.13 mm
H8Bore Size Tolerance
810 +0.022
Technical support• Zero backlash• High torsional stiffness• Maintenance free• Recommended temperature range 30ºC to +180ºC• One piece construction• Technical information see page T81• Product overview see pages 82 to 87
6 10 mm BoreStainless Steel
845
Spiral Beam CouplingsClamp Hub
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Cou
plin
gsan
d C
olla
rs
Technical specifications
Part number selection table
SizeRef
MaxSpeed
min1
MaxTorque
Ncm
Misalignment TorsionalStiffness
Nm/rad
RadialStiffness
N/mm
Momentof
Inertiagcm2
MaxScrewTorque
Ncm
ApproxWeight
g
Radial
mm
Axial
mm
Angular
deg2532 6,000 200 ±0.35 ±0.5 ±4.0 29 150 84 200 88
PartNumber
Material BoreØB1
BoreØB2
RWKXK25321006RWKXK25320808RWKXK25321010
Stainlesssteel
108
10
68
10
All dimensions in mmGeneral tolerances ±0.13 mm
Associated ProductsShafts: page 112Bearings: page 121Leadscrews: page 71Intelligent motors: page 22
H8Bore Size Tolerance
6 +0.0188
10 +0.022
Technical support• Zero backlash• High torsional stiffness• Maintenance free• Recommended temperature range 30ºC to +180ºC• One piece construction• Technical information see page T81• Product overview see pages 82 to 87
6 10 mm Bore
846
Radial Tooth Couplings
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Couplings
and Collars
Technical specifications
Part number selection tablePart
NumberCouplingMaterial
BoreØB1
BoreØB2
RSKSS20220606RSKSS20220806RSKSS20221006RSKSS20220808RSKSS20221010
Steel9S Mn Pb 28
(Black finished)
68
108
10
6668
10
SizeRef
MaxSpeed
min1
MaxTorque
Ncm
Misalignment Module
mm
RadialStiffness
N/mm
Momentof
Inertiagcm2
MaxScrewTorque
Ncm
ApproxWeight
g
Radial
mm
Axial
mm
Angular
deg2022 8,000 200 N/A N/A ±0.5 0.7 N/A 26 80 42
Associated ProductsShafts: page 112
Bearings: page 121Leadscrews: page 71
Intelligent motors: page 22
All dimensions in mmGeneral tolerances ±0.13 mm
H8Bore Size Tolerance
6 +0.018810 +0.022
Technical support• Recommended temperature range 30ºC to +120ºC• Self centering connection• Technical information see page T81• Product overview see pages 82 to 87
4 6 mm Bore
847
Friction Clutch Spiral SpringClamp Hub
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Cou
plin
gsan
d C
olla
rs
Technical specifications
All dimensions in mmGeneral tolerances ±0.13 mm
Associated ProductsShafts: page 112Bearings: page 121Leadscrews: page 71Intelligent motors: page 22
PartNumber
Bore
ØB
MaxSpeed
min1
MaxAdjustable
TorqueNcm
Momentof
Inertiagcm2
MaxScrewTorque
Ncm
Material ApproxWeight
g
Flange ClutchLining
RRKSK202004RRKSK202005RRKSK202006
456
50 30 8.4 100Steel
9S Mn Pb 28(Black finished)
Nylatron 20
Note: Gear not included, manufactured on request, please enquire
H8Bore Size Tolerance
456
+0.018
f8Shaft Dia Tolerance
10 0.0130.035
Technical support• Zero backlash before slipping• Maintenance free• Recommended temperature range 10ºC to +50ºC• Protects actuators from torque damage• Adjustable torque setting• Technical information see page T81• Product overview see pages 82 to 87
4 6 mm Bore
848
Friction Clutch Spiral SpringSet Screw Hub
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Couplings
and Collars
Part number selection and technical tablePart
NumberBore
ØB
MaxSpeed
min1
MaxAdjustable
TorqueNcm
Momentof
Inertiagcm2
MaxScrewTorque
Ncm
Material ApproxWeight
g
Flange ClutchLining
RRKSS202504RRKSS202505RRKSS202506
456
50 30 8.4 80Steel
9S Mn Pb 28(Black finished)
Nylatron 23
Associated ProductsShafts: page 112
Bearings: page 121Leadscrews: page 71
Intelligent motors: page 22
All dimensions in mmGeneral tolerances ±0.13 mm
Note: Gear not included, manufactured on request, please enquire
H8Bore Size Tolerance
456
+0.018
f8Shaft Dia Tolerance
10 0.0130.035
Technical support• Zero backlash before slipping• Maintenance free• Recommended temperature range 10ºC to +50ºC• Protects actuators from torque damage• Adjustable torque setting• Technical information see page T81• Product overview see pages 82 to 87
4 6 mm Bore
849
Friction Clutch Plate Spring Clamp Hub
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Cou
plin
gsan
d C
olla
rs
Technical specificationsPart
NumberBore
ØB
MaxSpeed
min1
MaxAdjustable
TorqueNcm
Momentof
Inertiagcm2
MaxScrewTorque
Ncm
Material ApproxWeight
g
Flange ClutchLining
RRKTK202004RRKTK202005RRKTK202006
456
40 120 7 100Steel
9S Mn Pb 28(Black finished)
Nylatron 23
All dimensions in mmGeneral tolerances ±0.13 mm
Associated ProductsShafts: page 112Bearings: page 121Leadscrews: page 71Intelligent motors: page 22
H8Bore Size Tolerance
456
+0.018
f8Shaft Dia Tolerance
10 0.0130.035
Note: Gear not included, manufactured on request, please enquire
Technical support• Zero backlash before slipping• Maintenance free• Recommended temperature range 10ºC to +50ºC• Protects actuators from torque damage• Adjustable torque setting• Technical information see page T81• Product overview see pages 82 to 87
4 6 mm Bore
850
Friction Clutch Plate Spring Set Screw Hub
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Couplings
and Collars
Technical specifications
Associated ProductsShafts: page 112
Bearings: page 121Leadscrews: page 71
Intelligent motors: page 22
All dimensions in mmGeneral tolerances ±0.13 mm
PartNumber
Bore
ØB
MaxSpeed
min1
MaxAdjustable
TorqueNcm
Momentof
Inertiagcm2
MaxScrewTorque
Ncm
Material ApproxWeight
g
Flange ClutchLining
RRKTS202504RRKTS202505RRKTS202506
456
40 120 9.9 80Steel
9S Mn Pb 28(Black finished)
Nylatron 25
H8Bore Size Tolerance
456
+0.018
f8Shaft Dia Tolerance
10 0.0130.035
Note: Gear not included, manufactured on request, please enquire
Technical support• Zero backlash before slipping• Maintenance free• Recommended temperature range 10ºC to +50ºC• Protects actuators from torque damage• Adjustable torque setting• Technical information see page T81• Product overview see pages 82 to 87
3 10 mm Bore
851
Solid Couplings
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Cou
plin
gsan
d C
olla
rs
All dimensions in mmMaterials: Aluminium alloy
grade 2024 T351Stainless steel
Grade18.8 type 303Screws C12L14
Associated ProductsShafts: page 112Bearings: page 121Leadscrews: page 71Intelligent motors: page 22
Example Part No:MCLX A 33
Dimensions(mm)
BasicPart
Number
Material SizeRef
Standard Bore Sizes ØB1 and ØB2
(bore tolerance +0.012/+0.050)
O/D
ØD
Length
L ØC
ClampScrew
T
MCLX(1piece)
MSPX(2piece)
A*(Aluminium)
SS(St. steel)
34568
10
34568
10
151515182429
222222303545
15.015.015.021.527.133.0
M2M2M2M3M3M4
*Aluminium is only available on MCLX
MCLX (one piece) MSPX (two piece)
Part number selection table
Product options Technical support• Alternative bore sizes• Imperial bores• Set screw clamping• Stainless steel screws
• Does not mark the shaft• Nypatch® antivibration hardware• Precision honed bore• MSPX, two piece style is balanced by opposing
hardware and is easily disassembled andmaintained
• Max speed: 4,000 rpm• Recommended temperature range:
Stainless steel 40ºC to +175ºCAluminium 40ºC to +100ºC
• Technical information see page T81• Installation information see page T84• Product overview see pages 82 to 87
852 Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Couplings
and Collars
Associated ProductsShafts: page 112
Bearings: page 121Leadscrews: page 71
Intelligent motors: page 22
All dimensions in mmMaterials: Aluminium alloy grade 2024 T351Stainless steel Grade18.8 type 303Screws C12L14
Example Part No:MWCL A 6
Dimensions(mm)
BasicPart
Number
Material Size Standard Bore Sizes ØB
(bore tolerance +0.012/+0.050)
O/D
ØD
Width
W ØC
ClampScrew
TMWCL
(1piece)MWSP
(2piece)
A*(Aluminium)
SS(St. steel)
68
10
68
10
161824
202020
20.822.426.3
M3M3M3
MWCL (one piece) MWSP (two piece)
*Aluminium is only available on MWCL
Part number selection table
Product options Technical support• Alternative bore sizes• Imperial bores• Set screw clamping• Stainless steel screws
• Does not mark the shaft• Integral location face• Excellent for high axial loads• MWSP, two piece style is balanced by
opposing hardware and is easily disassembledand maintained
• Transmits torque in confined spaces• Recommended temperature range:
Stainless steel 40ºC to +175ºCAluminium 40ºC to +100ºC
• Installation information see page T84• Product overview see pages 82 to 87
6 10 mm Bore Double Width Shaft Clamp Collars
3 10 mm Bore
853
Shaft Clamp Collars
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Cou
plin
gsan
d C
olla
rs
Associated ProductsShafts: page 112Bearings: page 121Leadscrews: page 71Intelligent motors: page 22
All dimensions in mmMaterials: Aluminium alloy
grade 2024 T351sulphuric anodised
Stainless steel Grade18.8 type 303
Screws C12L14
MCL (one piece) MSP (two piece)
Example Part No:MCL A 3
Dimensions(mm)
BasicPart
Number
Material Size Standard Bore Sizes ØB
(bore tolerance +0.012/+0.050)
O/D
ØD
Width
W ØC
ClampScrew
T
MCL(1piece)
MSP(2piece)
A (Aluminium)
SS(St. steel)
3456789
10
3456789
10
1616161618182424
99999999
20.820.820.820.822.422.426.326.3
M3M3M3M3M3M3M3M3
Part number selection table
Product options Technical support• Alternative bore sizes• Imperial bores• Stainless steel screws• Plastic collars available• 316 stainless steel available
• Does not mark shaft• Integral location face• MSP, two piece style is balanced by opposing
hardware and is easily disassembled andmaintained
• Predrilled face holes• Recommended temperature range:
Stainless steel 40ºC to +175ºCAluminium 40ºC to +90ºC
• Installation information see page T84• Product overview see pages 82 to 87
854 Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Couplings
and Collars
Associated ProductsShafts: page 112
Bearings: page 121Leadscrews: page 71
Intelligent motors: page 22
All dimensions in mmMaterial: Stainless steel grade 18.8 type 303Screws C12L14
Example Part No:MTCL SS 4
Dimensions(mm)
BasicPart
Number
Material Size Standard Thread Sizes
B
O/D
ØD
Width
W ØC
ClampScrew
T
MTCL SS(St. steel)
4568
10
M4x0.7M5x0.8M6x1
M8x1.25M10x1.5
1616161824
99999
20.820.820.822.426.3
M3M3M3M3M3
MTCL (threaded)
Part number selection table
Product options Technical support• Alternative thread sizes• Imperial threads• Stainless steel screws• Acme and lefthand threads available• Additional sizes available
• Does not mark shaft• Integral location face• Installation information see page T84• Product overview see pages 82 to 87
4 10 mm Bore One Piece Threaded Collars
4 10 mm Bore
855
One Piece Set Screw Collars
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Cou
plin
gsan
d C
olla
rs
Example Part No:MSC SS 4
Dimensions(mm)
BasicPart
Number
Material Size Standard Bore Sizes ØB
(bore tolerance +0.012/+0.050)
O/D
ØD
Width
W
SetScrew
T
MSC SS(St. steel)
4568
10
4568
10
810121620
5688
10
M2.5X3M3X4M4X4M4X4M5X5
MSC (set screw)
Part number selection table
Associated ProductsShafts: page 112Bearings: page 121Leadscrews: page 71Intelligent motors: page 22
All dimensions in mmMaterial: Stainless steel
grade 18.8 type 303Screws C12L14
Product options Technical support• Alternative bore sizes• Imperial bores• Stainless steel screws• Plastic collars available
• Forged socket set screw• Installation information see page T84• Product overview see pages 82 to 87
TechnicalInformation
T81
Couplings
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Tech
nica
lIn
form
atio
n
TORSIONAL STIFFNESS
This is the characteristic that describes theangular deflection when a torque is applied. Hightorsional stiffness contributes to increasedaccuracy and system response. It is essential foraccurate feedback applications.Applications that are subject to shock loads mayrequire a less stiff coupling to reduce the peaktorques and avoid premature failure or slippingclamps.
RADIAL COMPLIANCE
This is the characteristic that describes the forcethe coupling applies on the support bearings whenthe shafts are misaligned. High radial complianceis essential to provide low bearing loads.
TORQUE CAPACITY
In general, the rated torque figures are based on>106 torque reversals and the peak torque shouldnot be applied for more than 1% of the duty cycle.
Test samples are standard productswith a nominal O.D of 20 mm
Torque (mNm)
Tors
iona
l Erro
r (m
inut
es o
f arc
)Fo
rce
(N)
Parallel Offset (mm)
Test samples are standard productswith a nominal O.D of 20 mm
Angular CombinedAxialParallel
SHAFT MISALIGNMENT
The most common type of misalignment is a combination of angular, parallel and axial misalignmentand occurs due to the buildup of tolerances as associated parts are assembled together. As theseaccumulate randomly, worstcase misalignment should be calculated and used to select the correctcoupling to avoid premature failure.
TechnicalInformation Couplings
T82 Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
TechnicalInform
ation
TRANSMISSION ERROR
Often referred to as kinematic error, this is the total error in the driven shaft position with regardto thedriving shaft position. In a system the following factors must be individually considered to determinetheir overall effect.
a. Backlash ........................................................ internal clearance relatedb. Torsional wind up .......................................... torsional stiffness relatedc. Velocity error .................................................. coupling design related
a. BacklashIs the amount of free rotational movement inherent in the coupling under zero or near zero torsionalloads. Only the Oldham coupling type in this catalogue is susceptible to slight backlash.
b. Torsional Wind UpIn applications where the resistance is frictional, the driven shaft will experience a position lag, whichwill double with direction reversal, proportional to the torsional stiffness.
During operating mode, the inertia and the torque will cause a momentary lag but this will not be seenat standstill.
c. Velocity ErrorIn general, couplings with double flexing elements (ReliaFlex®, Bellows and Twin disc couplings) willintroduce negligible velocity errors.
Velocity errors occur with angular misalignment and are proportional to shaft angle.Only the Oldham coupling type in this catalogue is susceptible to this error.
LUBRICATION
This is not required on any of the couplings in this catalogue.
FLOATING SHAFTS
We do not recommend the use of couplings in this catalogue for floating shafts, where one or bothends of a shaft are supported by a coupling.
Fixed shaft, supportedin 2 bearings.
Floating shaft, relies on thecoupling to support one end.WARNING: This arrangement isnot recommended.
TechnicalInformation
T83
Couplings
Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
Tech
nica
lIn
form
atio
n
TORSIONAL RESONANCE
The torsional natural frequencies of a system are dependent on the mass/elastic characteristics of thevarious inertias and connecting shafts. Torsional resonance can occur under certain conditions whenthe natural frequency of the system is close to the excitation frequency of the driving system. It ismost likely to occur when the load is predominantly inertial and can occur in closed loop position orvelocity control systems, leading to torsional vibrations which in severe circumstances can destroy thecoupling.
Choosing a coupling that operates well above or well below the operating frequencies can help toavoid premature failure.
The resonant frequency of a system can be calculated from the following:
where FR = Resonant frequency (Hz)JM = Motor inertia (Kgm2)JL = Load inertia (Kgm2)CT = Coupling torsional stiffness (mNm/min)
RELIAFLEX® INSTALLATION
Couplings are available with either clamp or set screw mounting. Clamp fastening, both ReliaGrip™and traditional, allows repeated repositioning of the coupling on the shaft leaving the shaft unmarked.The effectiveness of the clamp is dependent on the diameter being a 'close' fit in the coupling bore.Use of Reliance components will ensure that the clamp works correctly.
Set screws provide an effective but nonadjustable means of connecting couplings and shafts. Ideallythe shafts should have a small flat in the area of the screw, which allows the set screw to seat belowthe surface of the shaft.
OLDHAM COUPLING, SOLID COUPLING AND COLLAR INSTALLATION
Oldham CouplingsEnsure that the misalignment between shafts is within the coupling's ratings. Slide a hub onto eachshaft to be joined with the drive tenons facing each other. Rotate the hubs on the shaft so the drivetenons are located 90° from each other. Place a torque disc so one groove fits over the drive tenonsof a hub and centre the disc by hand.
Insert a shim with the thickness of the coupling's axial motion rating into the groove of the torque disc.Slide the tenons of the second hub into the mating groove in the disc until it touches the shim stock.
Fully tighten the screw(s) on each hub to their recommended seating torque. Remove the shim stockto leave a small gap between the top of the drive tenons and the torque disc to allow for axialmovement.
TechnicalInformation Couplings
T84 Contact us for product information, design support and custom solutionssales@reliance.co.uk +44 (0) 1484 601002 www.reliance.co.uk
TechnicalInform
ation
Solid CouplingsAlign the coupling on the two shafts to be connected. Tighten the Nypatch® clamp screws in twostages. Starting with the inside screws, tighten to half of the recommended seating torque. Repeat forthe outside screws, again tightening to half of the recommended seating torque (on twopiece collarsbe sure to maintain the gap between the two halves of the coupling during installation). Tightenscrews to the full recommended seating torque following the same pattern, beginning with the insidescrews.
CollarsUse collars as they are received. Wipe the bore clean and apply a thin coat of light oil to the shaft. Place collar in desired location onshaft and tighten the collar until a slight resistance is felt (on twopiece collars be sure to maintain thegap between the two halves of the collar during installation). Bring collar into final position and tightenscrews to the full recommended seating torque.
RG36 Issue A2
Recommended