SAFETY COUPLINGS - ceeindustrial.comceeindustrial.com/public/data/companyCatalogue1213561588.pdf · drives the safety coupling unit can be ... positive locking elements. ... backlash

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JAKOBAntriebstechnik

Safety couplings

For direct and indirect drives..........................

Modular System... ..........................................

Working method and function principle..........

Adjusting the disengagement torque .............

For indirect drives

Series SK.......................................................

SKG................................................................

SKL................................................................

With bellows attachment

Series SB.......................................................

SBA................................................................

SBB................................................................

SBC................................................................

with elastomer attachment

Series SE.......................................................

SEA................................................................

SEB................................................................

SEC................................................................

Special couplings............................................

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

Safe

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ou

plin

gs

Safetycouplings

1 www.jakobantriebstechnik.de Tel. 06022 2208-0 Fax 06022 220822

Safety couplings for direct and indirect drives

Due to the constantly increasing automation and dyna-

mics of modern work processes, the devices which

protect the complex and expensive units against resul-

ting damages in case of errors are increasing in impor-

tance. JAKOB safety couplings reduce expensive

machine damages, repairs and down time by acting as

torque limiters and overload protection, absolutely reli-

ably. JAKOB safety couplings are the life insurance for

your machines, no matter whether the error is due to

incorrect operation, programming error, material over-

load or tool breakage.

indirect drives:

direct drives:

series SK

series SB / SE

JAKOB- safety couplings are the result of decades of

continuous research and development as well as the

experience gained from thousands of different applica-

tions worldwide.

Unique design aspects, high quality materials, precision

machining of the individual components are some of the

factors which make JAKOB couplings one of the leading

couplings today. The safety couplings are used in all

areas of the machine tool industry, ranging from critical

servo drive applications to overload protection in convey-

or systems.

Output characteristics

+ optimal overload protection

+ backlash free torque transfer

+ stepless disengagement torque adjustment

+ fixed point reengagement (360° synchronised position)

+ automatic re-engaging

+ degressive spring characteristic

+ excellent dynamic functional characteristics

+ large selection of types (modular system)

+ compensation of shaft misalignments

+ integral fitting of pulleys

bell housing Proximity switch AC - servo motor

Safety coupling Series SB

AC - servo motor

Toothed belt drive

Spindle bearing

Safety coupling

Series SKProximity switch

Safetycouplings

2www.jakobantriebstechnik.de Tel. 06022 2208-0 Fax 06022 220822

Safety couplings Modular system

The modular safety coupling system consists of four stan-

dard series, each of which when combined with different

attachments result in customized solutions for the specific

requirements.

For indirect drives, pulleys, gears etc. can be mounted on

the couplings to customize it for the application. For direct

drives the safety coupling unit can be attached to metal

bellows, elastomer spider or membrane hubs to obtain

a safety coupling capable of compensating shaft misalign-

ments also. The main selection criteria for safety

couplings are the torque to be transmitted, required

torsional stiffness, existing shaft diameters the installation

environment as well as the operating factors, temperature

and shaft misalignments.

Note

Summary

Safety mechanism attachments Series2 Nm - 1.500 Nm

- pulleys

- gears

- flange

- metal bellows

- straight

- corrugated

- elastomer spider

- oscillation dampening

- plug in

SK

SB

SE

- To reduce the wear of the safety coupling mecha-

nism the drive should be stopped as soon as possi-

ble after disengagement. The switching signal of

the limit switch can be used for this (emergency-

OFF function) purpose

- In vertical drive axis the slide or the table can drop

upon disengagement of the safety coupling due to its

own weight and also the low residual torque of the

safety coupling. To counter this effect it is suggested

that either a compensating weight or an additional

brake be provided.

- During the coupling selection the linear measuring

system (positioning) must also be considered. When

fitting a encoder on the drive motor a torsionally stiff

coupling should be used to get the best result.

- To minimise surface impact and to prevent a possi-

ble jamming, care is to be taken when tightening the

conical connection of series SK.

- The safety coupling is maintenance free under nor-

mal operating conditions.

- For mountening instructions and explanations about the shaft - hub - connection, please look

at >Servo couplings< page 6-8.

Safetycouplings


Safety coupling Working method and function principle

The backlash free ball locking mechanism

balls

thrust plate

feed motion

cup spring

adjusting nut

conical bush

hub

flange ring

The clutch series SBE and SKD are equipped with an

additional control mechanism, which prevents a reenga-

ging i.e. allows the balls to ratched over until standstill.

The drive train is thereby put in a “stand by” state and the

residual torque reduced to a minimum. The reengage-

ment takes place automatically in either direction upon

reversal of the rotation direction at low speeds as and

when the reference position is reached.

JAKOB safety couplings are designed as nominal break points

or as overload protection in a direct or indirect drive train.

The heart of the safety coupling is a highly precise, sturdy

declutching mechanism with steel balls as spring loaded

positive locking elements.

The drive torque is guided into the centrally arranged hub via

a frictional, backlash free radial clamping hub or conical bush

connection. The hub is designed as a ball cage and serves for

fitting the flange ring and the thrust plate with the cup springs

press the balls over a thrust plate into hardened detents

(calotte) of the flange ring. In normal operation the drive torque

is transferred, backlash free, into the flange ring. For the further

transfer of the torque and speed, a choice of compensation

elements (metal bellows, elastomer spider, membrane hubs), a

gear or pulley or an appropriate connection flange is fitted to

the flange ring. If the set disengagement torque is exceeded in

the case of a crash or collision, the flange ring turns in relation

to the cage hub and the balls are abruptly pushed out of the

detents. The drive train is cut-off within a few milliseconds.

The axial stroke of the indexing plate can be

used with a proximity or mechanical limit switch

for the immediate stop (emergency-OFF) of the

drive.

The degressive spring characteristic

The dynamic disengagement characteristics

The patented preloading principal of the hardened and

polished steel balls between the ball cage, the hub, and

the detents of the flange ring ensure a backlash free

torque and angular motion transfer with high torsional

stiffness. The mechanism is effective in reverse direction

also i.e. for clockwise or counter-clockwise operation.

The function of the safety coupling is influenced substan-

tially by the cup springs, developed specifically for this

application. Due to its operation in degressive characteri-

stic range, the spring force drops with increasing spring

stroke (switching path), whereby the torque drops

immediately on response. With conventional spring

loaded torque limiters on the other hand, springs are

stressed even further and the spring force as well the

disengagement torque increase considerably before the

actual disengagement takes place, leading to additional

damage, This results in undesirable functional characteri-

stics between response and disengagement.

JAKOB safety clutches are distinguished by their excel-

lent dynamic disengagement characteristics. The reason

for this is the degressive spring characteristic, as well as

the minimised masses (ball and indexing plate), which

must be accelerated, axialy during disengagement.

The product of mass and acceleration (F=m* a) results in

a force which must be added to the spring force. In con-

ventional couplings where large masses have to be

moved, the static disengagement torque and the swit-

ching time can increase by several times.

The re - engagingThe balls, the cage bores and detents are distributed

asymmetric on the circumference, so that every 360° only

one synchronized location is possible. Until then the balls

ratchet over with a low residual torque (max. 5% of

TN). After elimination of the breakdown cause, the

coupling re-engages during operation at low speed

(<60r.p.m) automatically again into the synchronized posi-

tion and is ready for function. The relocation time for the

reference point location is reduced considerably due to the

synchronous reengagement.

The release mechanism

angle of twist

responce

disengagement

residual torque

angle of twist

respose

disengagementresidual torque

spring path

spring forc

e

Customary spring loaded JAKOB-safety coupling

Nm

Nm

working range response

Safetycouplings


Safety couplings Adjusting the disengagement torque

Series SK

Caution!

Series SB/SE

Release retaining screw. Turn adjusting nut with pin wrench (note reference mark); tightening retaining screw on

hub after setting the required disengagement torque. Setting can be done by turning the hub with scale till the

torque value to be set is in line with the reference mark; with Series SEA and SBC the two

radial clamping screws must be released in addition and retightened with the specified tightening torque after

adjustment.

The disengagement torque is generally between approximately 40% and 100% of the nominal torque of

the coupling and is steplessly adjustable. If the customer does not specify a setting value, the setting is

done at the maximum torque (nominal torque). The set, static disengagement torque can be adjusted (on the

machine) if necessary at a later date by turning the adjusting nut with a pin wrench. Adjusting nuts in the series

SB and SE are provided with a user friendly scale; with series SK the disengagement torque, and the

reference marks for Tmin and Tmax, are engraved on the face side of the adjusting nut to facilitate setting.

Due to the degressive spring characteristic within the setting range, a turning back (counter

clockwise) of the adjusting nut means an increase, or a turning in clockwise direction means a

reduction of the disengagement torque!

Unscrew retaining screw (see detail Z) completely; turn adjusting nut with pin wrench; after adjustment secure

the adjustment nut against turning by drilling and tightening the self tapping screw.

Detail Z

reference markon the hub(setting thread)

setting range betweenMin - Max - mark

=TA 70Nm

+

JAn rt iebstechnik

BOKA

Min

--

Max

retainingscrew

Z

Setting marking for disengagement torque

referencemark

retaining screw Clamping screw

retainingscrew

hole forpin wrench

referencemark

Series SBA / SBB / SEB / SEC Series SBC / SEA

Setting scale for disengagement torque:

Safetycouplings


Safety coupling Series SK

Safetycoupling


• for the attachment of toothed belt pulleys, gear wheels, chain wheels, flanges ...

• with integrated ball bearing or sliding bearing - optimal constructional adjustment

• frictional shaft-hub-connection with conical clamping bush resp. conical clamping ring

Series SKLSeries SKG

For overload protection resp. as collision protection for indirect drives, JAKOB's standard program presents

series SKG with integrated ball bearing, as well as series SKL with integrated sliding bearing. They enable the

adjustment of toothed belt pulleys, gear wheels or other units to the coupling flange rings with a concentricity -

resp. run-out exactness of a few hundredth of millimeters. During normal operation, the bearings must take up

the radial and axial forces and transfer them to the drive, resp. output shaft, only during uncoupling there is a

relative rotating movement between flange ring and hub for a short time. The chosen torque is transferred

backlash free and frictionally from the shaft to the coupling hub by a conical clamping ring resp. a conical

clamping bush. As the SKL coupling can be used for small pulleys and pinions because of the reference diame-

ter of the fastening threads, series SKG with its integrated ball bearing provides a good alternative for very com-

pact constructional solutions. In this cases, the coupling body can almost completely be fit into the pulley with

the result, that the forces can be led almost centrically to the bearing. Futhermore, the clamping ring is located

at the inside,at the side of the shaft, and therefore a subsequent mounting (modification) is possible, even when

available space is limited. Other safety coupling series for indirect drives, such as e.g. series SKM with

seperate sliding bearing or Series SKD with blocking mechanism can be delivered upon special request.

Application examples:

indirect ball- srew- drive:

Safety coupling series SKG with inte-

grated toothed belt pulley

indirect servo axis drive with SK

coupling as collision protection

Safety coupling Series SKGfor indirect drives

• with integral ball bearing - with conical clamping ring

• compact attachment - optimal system integration

SKG

static disengage- moment mass tightening torquement torque of inertia approx. of screws “ i ”

SizeTKA [Nm] [10-3kgm2] [kg] [Nm]

<setting range> <clamping ring>

4 2 - 4 0,2 0,5 4

9 4 - 9 0,2 0,5 4

18 9 - 18 0,2 0,5 4

23 9 - 23 0,7 1,1 8

35 18 - 35 0,7 1,1 8

75 25 - 75 0,7 1,1 8

100 50 - 100 1,8 1,9 12

170 65 - 170 3 2,4 12

270 100 - 270 10,4 5 34

550 200 - 550 10,7 5,3 34

1000 400 - 1000 65 16 115

1500 600 - 1500 67 16 115

Technical data:

Dimensions: (mm) length dimensions according to DIN ISO 2768 mH

Ordering example: SKG 170 - 28 H7 - TA=140 Nm

n

Ø p

Ø k

Ø D

g

l

Ø c

f s Feed motion

i - DIN 912

h7

e

Material: heat - treated steel

SKG Ø c e f g 6x i Økh7 l n Ø p s Ø D

min. max.

4 27 11 8 27,3 M 4 60 40 4x M 4 53 1 12 18

9 27 11 8 27,3 M 4 60 40 4x M 4 53 1 12 18

18 27 11 8 27,9 M 4 60 40 4x M 4 53 1 12 18

23 37 17 12 39 M 5 77 54 4x M 6 69 1,4 18 25,5

35 37 17 12 39 M 5 77 54 4x M 6 69 1,4 18 25,5

75 37 17 12 39 M 5 77 54 4x M 6 69 1,4 18 25,5

100 54 17 10 36,7 M 6 92 55 4x M 6 83 1,4 22 39

170 54 17 12 51 M 6 105 66 4x M 6 94 1,7 22 39

270 66 26 15 63,5 M 8 135 85 6x M 8 120 2,2 29 44

550 66 26 15 63,5 M 8 135 85 6x M 8 120 2,2 29 44

1000 90 38 15 89,4 M 12 190 134 6x M 12 168 3,2 41 62

1500 90 38 15 89,4 M 12 190 134 6x M 12 168 3,2 41 62

Safetycouplings


Safety coupling Series SKLfor indirect drives

• with integrated sliding bearing - with conical bush

• with small centric diameter for small size pulleys

SKL static disengagement moment mass tightening torquetorque TKA [Nm] of inertia approx. of screws “ i ”

Size <setting range> [10-3kgm2] [kg] “conical bush” [Nm]

4 2 - 4 0,2 0,5 4

9 4 - 9 0,2 0,5 4

18 9 - 18 0,2 0,5 4

23 9 - 23 0,7 1,1 12

35 18 - 35 0,7 1,1 12

75 25 - 75 0,7 1,1 12

100 50 - 100 1,8 1,9 12

170 65 - 170 3 2,4 12

270 100 - 270 10,4 5 34

550 200 - 550 10,7 5,3 34

1000 400 - 1000 65 16 115

1500 600 - 1500 67 16 115

Technical data:


Ordering example: SKL 100 - 25 G7 - TA=80 Nm

Ø D

e2Ø m

n

Ø p

Ø k

f

Ø D

Ø c

g

l

h6

H7

H7

s Feed motion

i - DIN933Size 4 / 9 / 18 - DIN912

w

e1

Material: heat - treated steel

SKL Ø c e1 e2 f g 6x i Ø k l Ø m 6xn Ø p s w Ø D

min. max.

4 27 22 10 6 9 M 4 60 46 30 M 5 40 1 19 10 16

9 27 22 10 6 9 M 4 60 46 30 M 5 40 1 19 10 16

18 27 22 10 6 9 M 4 60 46 30 M 5 40 1 19 10 16

23 36 28 15 6 16 M 6 77 61,5 36 M 6 50 1,4 22 18 24

35 36 28 15 6 16 M 6 77 61,5 36 M 6 50 1,4 22 18 24

75 36 28 15 6 16 M 6 77 61,5 36 M 6 50 1,4 22 18 24

100 50 31 20 6 22 M 6 92 71 48 M 6 65 1,4 22 22 35

170 50 31 20 8 22 M 6 105 74,4 48 M 6 65 2 22 22 35

270 62 37 20 12 31 M 8 135 99,5 58 M 8 76 2,2 34 28,5 41

550 62 37 20 12 31 M 8 135 99,5 58 M 8 76 2,2 34 28,5 41

1000 90 54 20 16 35 M 12 190 143,5 90 M 12 125 3,4 55 41,5 62

1500 90 54 20 16 35 M 12 190 143,5 90 M 12 125 3,4 55 41,5 62

Safetycouplings


Safety coupling Series SB with bellow attacment

JAKOB's standard program offers three versions with different hubs:

Series SBA - with conical clamping bushing on both sides

Series SBB - with EASY-clamping hub on the side of the bellow

Series SBC - with EASY-clamping hub on both sides

bell housing proximity switch AC servo motor

safety coupling series SB

spindle bearing

The safety couplings of series SB are a combination of

the disengagement mechanism, which has proven

itself for decades, and a torsionally stiff four-corrugated

metal bellow of series KP (size 900, and size 1500 with

6-corrugated KM-bellow). In a big variety of

applications, particularly as collision protection in feed

axes of machine tools, they have proven their

effectiveness. Main characteristics of series SB are the

compact size, low moment of inertia, the compensation

of misalignment between drive shaft and output shaft

with low restoring forces, as well as an absolute

backlash free, conformal torque transfer because of

the very high torsional stiffness of the metal bellow and

the ball locking mechanism. For further technical

details and a description of the adjustment of the

torque, see page 4 resp. page 5.

Note: For speeds of more than 3600 rpm, please

contact us for technical examination.

The conical clamping bushing version is of rotation sym-

metrical design and is particularly suitable for smaller shaft

diameters. The versions with radial EASY-clamping hub

are much easier to fit, however, they are a little longer.

Further options, such as blocking mechanism, higher

torque, alternative bellow forms (e.g. 6-corrugated KM-bel-

low) or hub versions (e.g. with KPS conical expanding hub

on bellow side) are possible upon request.

• optimal overload and collision protection for direct drives• high torsional stiffness - exact torque transfer• whole metal version - low moment of inertia• compensation of misalignments - low restoring forces

Savetycouplings


Safety coupling Series SBA with bellow attachment

• with conical bushing on both sides

• compact and short design

static disengagement moment torsional max. shaft axial lateral mass tighteningSBA torque TKA [Nm] of inertia stiffness misalignment [mm] spring rate spring rate approx. torque [Nm]Size <setting range> [10-3kgm2] [Nm/arcmin] axial ± lateral [N/mm] [N/mm] [kg] screws i / j

5 2 - 5 0,25 7 0,5 0,2 70 480 0,7 4 / 4

10 4 - 10 0,25 7 0,5 0,2 70 480 0,7 4 / 4

20 8 - 20 0,25 7 0,5 0,2 70 480 0,7 4 / 4

40 15 - 40 0,7 12 0,6 0,2 70 650 1,3 14 / 12

80 30 - 80 0,7 12 0,6 0,2 70 650 1,3 14 / 12

120 50 - 120 1,9 25 0,8 0,2 100 1000 2,2 14 / 12

200 80 - 200 2,8 25 0,8 0,2 100 1000 2,5 14 / 14

300 100 - 300 9 40 0,8 0,2 95 1350 5 35 / 35

560 200 - 560 12 90 0,7 0,2 170 4200 6 65 / 35

1000 400 - 1000 63 95 1,0 0,3 145 1000 16 65 / 115

2000 800 - 2000 64 150 1,0 0,3 130 920 17 115 / 115

Technical data:

Dimensions: (mm) length dimensions according to DIN ISO 2768 cH

Ordering example: SBA 120 - D1 = 28 G6 - D2 = 22 H6 - TKA= 100 Nm

ØD

1

Øc1

La

Øc2

Øa

ØD

2

s Feed motion

j - DIN 933

i - DIN 933

w

Øb

t1 t2

Material:

- bellows: stainless steel

- safety part /

conical bushing: heat-treated steel

- screws: nickel plated

SBA Ø a Ø b Øc1/Øc2 6 x i 6 x j La-2 s t1 / t2 w Ø D1/2 Ø D1/2

min max

5 64 56 30 / 27 M 4 * M 4 * 75 1,0 18 22 9 19 / 16

10 64 56 30 / 27 M 4 * M 4 * 75 1,0 18 22 9 19 / 16

20 64 56 30 / 27 M 4 * M 4 * 75 1,0 18 22 9 19 / 16

40 79 66 36 M 6 M 6 87 1,4 24 26,5 12 24

80 79 66 36 M 6 M 6 87 1,4 24 26,5 12 24

120 94 82 50 M 6 M 6 98 1,4 27 29 18 35

200 105 82 50 M 6 M 6 100 2,0 27 27 18 35

300 135 101 62 M 8 M 8 120 2,2 32 35 26 42

560 135 122 70 / 62 M 10 M 8 129 2,2 36 / 32 35 32 / 26 48 / 42

1000 190 132 83 / 95 M 10 M 12 190 3,4 46,5 55 40 60 / 67

2000 190 157 98 / 95 M 12 M 12 193 3,4 46,5 55 40 70 / 67

* DIN 912

Safetycouplings


Safety coupling Series SBB with bellow attachment

• simple installation, radial EASY-clamping hub on bellow-side

• disengage part with conical hub for small bore diameters

static disengagement moment torsional max. shaft axiale laterale mass tighteningSBB torque TKA [Nm] of inertia stiffness misalignment [mm] spring rate spring rate approx. torque [Nm]

Size <setting range> [10-3kgm2] [Nm/arcmin] axial ± lateral [N/mm] [N/mm] [kg] screws f / j

5 2 - 5 0,25 7 0,5 0,2 70 480 0,7 14 / 4

10 4 - 10 0,25 7 0,5 0,2 70 480 0,7 14 / 4

20 8 - 20 0,25 7 0,5 0,2 70 480 0,7 14 / 4

40 15 - 40 0,7 12 0,6 0,2 70 650 1,2 35 / 12

80 30 - 80 0,7 12 0,6 0,2 70 650 1,2 35 / 12

120 50 - 120 1,8 25 0,8 0,2 100 1000 2,0 65 / 12

200 80 - 200 2,7 25 0,8 0,2 100 1000 2,3 65 / 14

300 100 - 300 8,5 40 0,8 0,2 95 1350 4,8 115 / 35

560 200 - 560 11 90 0,7 0,2 170 4200 5,6 115 / 35

1000 400 - 1000 62 95 1,0 0,3 145 1000 15 190 / 115

2000 800 - 2000 62 150 1,0 0,3 130 920 15 290 / 115

Technical data:


Ordering example: SBB 40 - D1 = 32 G7 - D2 = 20 H7 - TKA= 30 Nm

Material:

- bellows: stainless steel

- clamping hub: high tensile aluminium

- safety part /

conical bushing: heat-treated steel


SBB Ø a Ø b f g1 h 6x j Lb-2 s t 1 t 2 w Ø D1 Ø D2

min/max min/max min/max

5 64 56 M 6 19 7,5 M 4 * 83 1,0 18 / 40 18 22 8 / 30 9 / 16

10 64 56 M 6 19 7,5 M 4 * 83 1,0 18 / 40 18 22 10 / 30 9 / 16

20 64 56 M 6 19 7,5 M 4 * 83 1,0 18 / 40 18 22 10 / 30 9 / 16

40 79 66 M 8 22 8,5 M 6 95 1,4 22 / 43 24 26,5 14 / 34 12 / 24

80 79 66 M 8 22 8,5 M 6 95 1,4 22 / 43 24 26,5 18 / 34 12 / 24

120 94 82 M 10 28 8,5 M 6 110 1,4 24 / 52 27 29 20 / 42 18 / 35

200 105 82 M 10 28 10,5 M 6 112 2,0 24 / 52 27 27 22 / 42 18 / 35

300 135 101 M 12 35 10,5 M 8 132 2,2 28 / 56 32 35 25 / 55 26 / 42

560 135 122 M 12 45 12,5 M 8 140 2,2 28 /64 32 35 40 / 75 26 / 42

1000 190 132 M 14 47 13,5 M 12 208 3,4 36 / 102 46,5 55 40 / 75 40 / 67

2000 190 157 M 16 54 19 M 12 211 3,4 40 / 102 46,5 54 60 / 85 45 / 67

* DIN 912

Safetycouplings


Safety coupling Series SBC with bellow attachment

• radial EASY-clamping hub on both sides

• simple installation, for large bore diameters

static disengagement moment torsional max. shaft axiale laterale mass tightening SBC torque TKA [Nm] of inertia stiffness misalignment [mm] spring rate spring rate approx. torque [Nm]Size <setting range> [10-3kgm2] [Nm/arcmin] axial ± lateral [N/mm] [N/mm] [kg] screw f

5 2 - 5 0,28 7 0,5 0,2 70 480 0,7 14

10 4 - 10 0,28 7 0,5 0,2 70 480 0,7 14

20 8 - 20 0,28 7 0,5 0,2 70 480 0,7 14

40 15 - 40 0,75 12 0,6 0,2 70 650 1,3 35

80 30 - 80 0,75 12 0,6 0,2 70 650 1,3 35

120 50 - 120 2,0 25 0,8 0,2 100 1000 2,1 65

200 80 - 200 3,0 25 0,8 0,2 100 1000 2,5 65

300 100 - 300 9,0 40 0,8 0,2 95 1350 5 115

560 200 - 560 12 90 0,7 0,2 170 4200 6 115

Technical data:


Ordering example: SBC 300 - D1 = 48 G7 - D2 = 52 G7 - TKA= 250 Nm

ØD

1

g1

Øb

Øa

t2t1

h1 h2Lc

w

Feed motion

f- DIN912

f- DIN912

Ø k

Ø D

2

g2

s

Material:

- safety part: heat-treated steel

- clamping hub: high tensile aluminiunm

- bellows : stainless steel


SBC Ø a Ø b f g1 g2 h1 h2 Ø k Lc-2 s t 1 t 2 w Ø D1 Ø D2

min/max min/max min/max min/max

5 64 56 M 6 19 20 7,5 7,5 24 93 1,0 18/40 15/37 33 8/30 8/27

10 64 56 M 6 19 20 7,5 7,5 24 93 1,0 18/40 15/37 33 10/30 8/27

20 64 56 M 6 19 20 7,5 7,5 24 94 1,0 18/40 15/38 34 10/30 8/27

40 79 66 M 8 22 24 8,5 9 30 107 1,4 22/43 18/45 39 14/34 15/37

80 79 66 M 8 22 24 8,5 9 30 107 1,4 22/43 18/45 39 18/34 18/37

120 94 82 M 10 28 31 8,5 11 40 128 1,4 24/52 22/52 46 20/42 18/48

200 105 82 M 10 28 31 10,5 11 40 132 2,0 24/52 22/52 46 22/42 20/48

300 135 101 M 12 35 43 10,5 12 52 149 2,2 28/56 24/64 52 25/55 28/62

560 135 122 M12/14 45 43 12,5 12 52 159 2,2 28/64 24/64 54 40/75 35/62

Safetycouplings


Safety coupling Series SEwith elastomer attachment

JAKOB's standard program consists of three series with backlash free, frictional shaft-hub-connection:

series SEA - with radial clamping hub on both sides

series SEB - with conical bushing and radial clamping hub

series SEC - with conical hub on both sides

proximity switch bell housing AC servo motor

safety coupling series SEA

spindle bearing

The large-scaled safety coupling program of JAKOB

has been extended and rounded up with the innovati-

ve series SE for direct drives. The SE types are a com-

bination of the proven safety coupling mechanism of

elastomer couplings of the series EKM and ESM-A.

They represent an alternative to series SB with bellow

attachment. Whereas the specific characteristic of the

metal bellows is the extremely high torsional stiffness,

the elastomer couplings are particularly characterised

by their rugged, excellent dampening characteristics

and the possibility of plug-in fitting. The admissible

max. operation temperature, however, should not

exceed 90°C.

The conical hubs are of rotation symmetrical design and are

appropriate especially for smaller shaft diameters. The

versions with radial clamping hubs are considerably easier to

fit, however, they are a little longer. Because of the plug-in

mounting, the user can change the hub on the side of the

spider without any problems; therefore this coupling is an ideal

and cost-effective solution e.g. for testing stands (see picture)

with different shaft sizes of the testing units.

• optimal overload protection and collision protection for direct drives

• plug-in type - backlash free - flexible - compensation of misalignments

• robust - compact - electrically insulating - oscillation dampening

The elastomer spider's function is to compensate misalignments

between drive shaft and output shaft. By distortion of the

coupling spider (PUR-98 Shore-A) during the plug-in assembly, a

backlash free torque transfer is ensured. elastic deformation dueto axial mounting forces

backlash free due toelastic deformation

galternatespaces knobs

safety-couplings


mounting procedure

Safety coupling Series SEA with elastomer attachment

• radial clamping hub on both sides

• simple installation, for large bore diameters

static disengagement moment torsional max. shaft mass tightening torqueSEA

torque TKA [Nm] of inertia stiffness misalignment [mm] approx. screw “f”

Size <setting range> [10-3kgm2] [Nm/arcmin] axial ± lateral [kg] [Nm]

5 2 - 5 0,3 0,37 0,5 0,1 0,7 10

10 4 - 10 0,3 0,37 0,5 0,1 0,7 12

20 8 - 20 0,3 0,37 0,5 0,1 0,7 14

40 15 - 40 0,9 0,93 1 0,1 1,3 30

80 30 - 80 0,9 0,93 1 0,1 1,3 35

120 50 - 120 2,6 1,95 1 0,1 2,4 60

200 80 - 200 3,3 1,95 1 0,1 2,7 67

300 100 - 300 10,5 5,5 1 0,15 5,1 115

550 200 - 550 13 6,7 1 0,15 5,7 115/185

Technical data:


Ordering example: SEA 20 - D1 = 22 G7 - D2 = 24 G7 - TA = 15 Nm

h1

x

h2

La

t1 t2

Ø D

1

g1

Ø b

1

Ø D

2

g2

Ø aØ k

s Feed motion

f - DIN 912f - DIN 912

Material:

- safety part: heat-treated steel

- clamping hub: hugh tensile aluminium

- elastomerspider: polyurethane 98 Sh-A


SEA Øa Øb1 f g1 g2 h1 h2 Ø k La±1 s t 1* t 2* x±1 Ø D1 Ø D2

min/max min/max min/max min/max

5 64 50 M6 16,5 20 9 7,5 18 87 1,0 16 - 26 15 - 36 33 9 - 26 8 - 27

10 64 50 M6 16,5 20 9 7,5 18 87 1,0 16 - 26 15 - 36 33 9 - 26 8 - 27

20 64 50 M6 16,5 20 9 7,5 18 87 1,0 16 - 26 15 - 36 33 10 - 26 8 - 27

40 79 70 M8 25 24 12 9 25 105 1,4 22 - 30 18 - 43 37 15 - 38 15 - 37

80 79 70 M8 25 24 12 9 25 105 1,4 22 - 30 18 - 44 37 20 - 38 20 - 37

120 94 85 M10 30,5 31 14 11 32 123 1,4 24 - 34 22 - 49 44 20 - 46 18 - 48

200 105 85 M10 30,5 31 14 11 32 126 2,0 24 - 34 22 - 50 44 28 - 46 20 - 48

300 135 100 M12 36 43 16 12 40 146 2,2 28 - 36 25 - 60 50 28 - 56 28 - 62

550 135 120 M12/14 44 43 18 12 52 158 2,2 30 - 42 25 - 62 52 35 - 70 38 - 62

Safetycouplings


*DIN 912 ** if a longer plug in depth is required, please call JAKOB !

Safety coupling Series SEB with elastomer attachment

• simple installation, radial clamping hub

• disengagepart with conical hub for small bore diameters

disengagement moment torsional max. shaft mass tightening torqueSEB

torque TKA [Nm] of inertia stiffness misalignment [mm] approx. screws [Nm]

Size <setting range> [10-3kgm2] [Nm/arcmin] axial ± lateral [kg] “f” “i”

5 2 - 5 0,25 0,37 0,5 0,1 0,6 10 3

10 4 - 10 0,25 0,37 0,5 0,1 0,6 12 4

20 8 - 20 0,25 0,37 0,5 0,1 0,6 14 4

40 15 - 40 0,85 0,93 1 0,1 1,3 30 12

80 30 - 80 0,85 0,93 1 0,1 1,3 35 14

120 50 - 120 2,2 1,95 1 0,1 2, 3 60 14

200 80 - 200 3,1 1,95 1 0,1 2,7 65 14

300 100 - 300 9,5 5,5 1 0,15 5,0 115 3 5

550 200 - 550 12 6,7 1 0,15 5,8 115 35

Technical data:


Ordering example: SEB 550 - D1 = 52 G7 - D2 = 38 G7 - TA = 450 Nm

h1

Lb

Ø D

1

g1

Ø b

1

Ø D

2

Ø c

Ø a

t1

Øk

s Feed motion

f - DIN 912 i

t2

Y

Material:

- safety part/

conical bushing: heat- treated steel


- elastomer spider: polyurethane 98 Sh-A


SEB Øa Øb1 Øc f g1 h1 i Ø k Lb s t 1** t 2** y Ø D1 Ø D2


5 64 50 52 M 6 16,5 9 6x M 4* 18 76 1,0 16 - 26 26 22 8 - 26 8 - 16

10 64 50 52 M 6 16,5 9 6x M 4* 18 76 1,0 16 - 26 26 22 10 - 26 8 - 16

20 64 50 52 M 6 16,5 9 6x M 4* 18 76 1,0 16 - 26 26 22 10 - 26 8 - 16

40 79 70 65 M 8 25 12 6x M 6 25 94 1,4 22 - 30 32 27 15 - 38 12 - 25

80 79 70 65 M 8 25 12 6x M 6 25 94 1,4 22 - 30 32 27 18 - 38 16 - 25

120 94 85 82 M 10 30,5 14 6x M 6 32 109 1,4 24 - 34 35 29 20 - 46 18 - 35

200 105 85 82 M 10 30,5 14 6x M 6 32 110 2,0 24 - 34 35 29 22 - 46 22 - 35

300 135 100 105 M 12 36 16 6x M 8 40 131 2,2 28 - 36 44 35 25 - 56 25 - 41

550 135 120 105 M 12 44 18 6x M 8 52 141 2,2 30 - 42 44 35 38 - 70 28 - 41

Safetycouplings


*DIN 912 ** if a longer plug in depth is required, please call JAKOB !

Safety coupling Series SEC with elastomer attachment

• with conical bush on both sides

• compact and short design

static disengagement moment torsional max. shaft mass tightening torqueSEC torque TKA [Nm] of inertia stiffness misalignment [mm] approx. screws [Nm]

Size <setting range> [10-3kgm2] [Nm/arcmin] axial ± lateral [kg] “ i ” “ j ”

5 2 - 5 0,3 0,37 0,5 0,1 0,7 3 6

10 4 - 10 0,3 0,37 0,5 0,1 0,7 4 8

20 8 - 20 0,3 0,37 0,5 0,1 0,7 4 8

40 15 - 40 1,1 0,93 1 0,1 1,8 12 8

80 30 - 80 1,1 0,93 1 0,1 1,8 14 8

120 50 - 120 2,7 1,95 1 0,1 2,8 14 35

200 80 - 200 3,5 1,95 1 0,1 3,1 14 35

300 100 - 300 11,0 5,5 1 0,15 6,0 35 65

550 200 - 550 16,0 6,7 1 0,15 7,5 35 115

Technical data:


Ordering example: SEC 120 - D1 = 28 G6 - D2 = 22 G6 - TA = 100 Nm

Ø D

1

Ø e

YLc

t1 t2Ø

k

Ø D

2

Ø c

Ø a

s Feed motion

j - DIN 912

i - DIN 933

Material:

- safety part : heat-treated steel

- conical bush: heat-treated steel


- elastomer spider: polyurethane 98 Sh-A


SEC Øa Øc Øe i j Ø k Lc s t 1** t 2** y Ø D1 Ø D2


5 64 52 50 6 x M 4* 4x M5 18 86 1,0 20-36 26 22 10 - 24 8 - 16

10 64 52 50 6 x M 4* 4x M5 18 86 1,0 20-36 26 22 10 - 24 8 - 16

20 64 52 50 6 x M 4* 4 x M 5 18 83 1,0 20-36 26 22 10 - 24 8 - 16

40 79 65 65 6 x M 6 8 x M 5 25 103 1,4 22-38 32 27 12 - 35 12 - 25

80 79 65 65 6 x M 6 8 x M 5 25 103 1,4 22-38 32 27 16 - 35 16 - 25

120 94 82 80 6 x M 6 4 x M 8 32 123 1,4 28-44 35 29 18 - 40 18 - 35

200 105 82 80 6 x M 6 4 x M 8 32 124 2,0 28-44 35 29 22 - 40 22 - 35

300 135 105 100 6 x M 8 4 x M 10 40 153 2,2 32-58 44 35 20 - 48 25 - 41

550 135 105 120 6 x M 8 4 x M 12 52 164 2,2 35-65 44 35 24 - 60 28 - 41

Safetycouplings


* DIN 912 ** if a longer plug in depth is required, please call JAKOB !

Series SMA with membrane attachement

• high torsional stiffness

• whole metal version

• clamping hub on both sides

• easy installation

• disengagement mechanismcentrally placed

• 9 sizes from 5 upto 550 Nm

Safety couplings Special couplings

Series SKM for indirect drives

• low - cost - version

• with seperate sliding bearing(not included)

• automatically re- engagingper 360° - synchronous position

• with conical clamping hub

• 11 sizes from 4 upto 1.500 Nm

Series SKD / SKEwith special blocking mechanism

• re- engaging only by reverse rotation

• minimal residual torque

• with seperate sliding bearing (series SKD)or with bellow attachment (series SKE)

• with conical clamping hub

• 10 sizes from 4 upto 1.500 Nm

Special design

• high speed up to 8000 rpm

• high torque up to 3000 Nm

• customized hub versions

and dimensions

• stainless steel design

• special re- engaging functions,

e.g. for vertical drive axis

Safetycouplings


Documents

SAFETY COUPLINGS - ceeindustrial.comceeindustrial.com/public/data/companyCatalogue1213561588.pdf · drives the safety coupling unit can be ... positive locking elements. ... backlash