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DryLin ® Design Guide ® ®

DryLin - igus · 2015. 10. 30. · DryLin® T Linear Guide System DryLin® R Linear Bearings/Shafting DryLin® Slide Tables Liners Adapters & Liners Solid plastic Pillow Blocks Shafting

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  • DryLin®

    DryLin®

    Design Guide

    ®®

  • DryLin® NLow ProfileGuide Rails

    The DryLin® N series offers extremely low profilesin several widths, and is therefore ideal in tight spaceconstraints. Like all DryLin® products the carriagesglide smoothly on anodized aluminum rails withoutthe need for messy lubricants. They are also avail-able in preloaded versions for reducing runningclearance. DryLin® N is a particularly low-coat alter-native to miniature ball bearing systems, and is moreprecise and economical when compared to manycustom-machined or simple plastic parts.

    DryLin® WFlexible Guiding System

    DryLin® NLow Profile Guides

    17mm 27mm 40mm 80mm

    Width in mm

    N17 ↕ 6mm

    N27 ↕ 9.5mm

    N40 ↕ 9.5mm

    N80 ↕ 12mm

    DryLin® W Flexible LinearGuide System

    DryLin® W was developed to promote designflexibility and quick assembly in both single anddouble rail configurations. DryLin® W is also offeredas a pre-mounted, bolt-on system - eliminating theneed for timely shaft alignment and carriageassembly. All DryLin® W systems are available withour enhanced J200 liners, which reduces frictionand optimizes bearing life.

    • The single rail system, which canincorporate a float ing square linearbearing, compensates efficiently for ex -treme shaft misalignments.

    • The double rail system totally eliminates theneed for shaft alignment, offering a single,bolt-on solution.

    • Available in 316 Stainless Steel

    Not actual sizeNot actual size

    The DryLin® StoryWe perform over 2,500 tests per year onhundreds of bearing materials specificallyformulated for maintenance-freeoperation, without lubrication. As a resultof this testing we have determined thatour iglide® J, J200 and T500 are idealmaterials for most linear bearingapplications due to their excellent wearproperties and low coefficients of friction.Unlike older bearing technology, DryLin®

    Linear Plain Bearings are engineered torun dry, without the need for messylubricants or costly maintenance anddowntime; expensive and cumbersomegrease lines may be eliminated from thedesign entirely. Dirt, dust, and otherabrasives will not be drawn into thebearing surface, making DryLin® ideal foraggressive environments, as well as forhigh moisture, wash-down, and evenunderwater applications.

    DryLin®Overview

    Double shaftAvailable in round only

    Single shaftAvailable in square or round

    ↕ 36mm

    27mm

    40, 80 mm↕

    60mm

    80mm

    20 mm

    Shaft size 10

    Shaft size 06

    Shaft size 16

    Shaft size 20

    30 mm

    18mm

    14mm ↕

    20 mm 20 mm

    16 mm 16 mm

    10 mm

    6 mm

    http://www.igus.co.uk/main_fs.asp?KATALOG=XIGLIDUR&GO=DryLin_EXPERTE

  • DryLin® TLinear Guide System

    DryLin® RLinear Bearings/Shafting

    DryLin® Slide Tables

    Liners Adapters & Liners Solid plastic

    Pillow Blocks Shafting Options

    Not actual size

    DryLin® RShaft Guide

    DryLin® R is dimensionally interchangeable with otherlinear bearings, but offers clean, cost-effective results,suitable for many shaft materials. The liner offersexcellent clearance, and makes DryLin® R suitablefor use in extremely wet and dirty environments –they are also easily replaceable. DryLin® S shaftingis the optimal shafting for the iglide® J material -increasing lifetime up to 50% vs. steel shafting.

    • Hard anodized aluminum shafts used withDryLin® linear bearings are ideal forapplications in which weight reductionand/or high service life is re quired.

    • DryLin® with stainless steel shafts provideexcellent che mical resistance and is an idealsolution for applications in the food andpackaging industry

    DryLin®

    Slide Tables

    SLW/HTSDryLin® Slide Tables are maintenance-free and offeredin both belt and screw drives for simple bolt-onassembly. Offering design flexibility and corrosion-resistance, they are also ideal as a low cost solu-tions for reduced production and assembly time.

    ZLWHigh speed belt-driven tables for velocities up to15 fps (5m/s)

    SET Easy TubeSimple, but and effective and solid design: that’sthe new DryLin® SET Easy Tube. A complete systemfrom few components for simple linear adjustments.

    DryLin® TProfile Guide Rails

    DryLin® T guide rails are dimensionallyinterchangeable with recirculating ball guides,but offer cost-effective, maintenance-freeoperation. Series 01 offers adjustableclearance, and the mini 04 series is ideal foruse in tight design constraints. Both useiglide® J glide pads and hard-anodizedaluminum rails for optimal friction and wearresistance.

    • Permits adjustments to the play ofguidance systems (Series 01)

    • Very resistant to dirt • Very low coefficient of friction and

    wear

    TW-HKA

    Size 09Size 12

    Size 15

    Size 20

    Size 30

    Size 25↕

    Size 15

    24mm

    10mm

    13mm

    16mm

    30mm

    36 mm

    42mm

    ↕ ↕ ↕ TW-01

    tt

    tt

    tt

    t

    tt

    tttttt

    tt

    tt

    t

    tt

    t

    t

    t

    HTS - Tough and AdaptableAvailable in 3 sizes andseveral shafting types andscrew materials

    ZLW - Linear ActuatorCompact and Lightweight

    SLW - Rigid and Low ProfileBased on DryLin® W doublerail system

    Not actual sizeNot actual size

    TK-04 Miniature

  • DryLin® Selection Guide

    DryLin® N Low Profile Guides• Low profile for tight design constraints• Low cost• No lubrication needed• Preloaded systems available for reduced

    clearance• Extremely lightweight

    DryLin® W Flexible Guiding System• Modular design offers flexible design

    configurations• Low cost• 316 stainless systems available• Double rail eliminates the need for shaft

    alignment• Easy to assemble

    DryLin® T Linear Guide System• Low cost alternative to ball bearing

    profile systems• Dimensionally interchangeable with ball

    bearing system• No lubrication or maintenance required• Adjustable clearance standard on some

    series• Lightweight• Corrosion-resistant

    DryLin® R Linear Bearings/Shafting• Low cost alternative to recirculating ball

    bearings• Dimensionally interchangeable with ball

    bearings and PTFE-lined systems• Replaceable liners• Corrosion-resistant• Works on many shaft materials, even

    aluminum and 300-series stainless steel

    DryLin Slide Tables• Bolt-on systems reduce design and

    assembly time• Available in screw and belt-actuated

    designs• Corrosion-resistant materials available• Cost-effective compared to other ball

    bearing stages

    Storage Solutions for a Tape Library

    Flatbed Ink-Jet Printer

    Mailroom Machinery

    Machining Center

    High Dirt Resistance

  • MaximumStaticLoad

    MaximumSurface Speed

    Linear

    MaximumApplication

    Temperature

    Rail/ShaftMaterial

    OnlineCalculator

    Section

    225 lbs 49.2 ft/s (15 m/s)-40°F to 194°F(-40°C to +90°C)

    anodized aluminum 26

    Mounted System2,877 lbs

    Single Bearing719 lbs

    49.2 ft/s (15 m/s)-40°F to 194°F(-40°C to +90°C)

    hard anodizedaluminum,

    anodized aluminum316 stainless steel

    27

    3,140 lbs 49.2 ft/s (15 m/s)-40°F to 194°F(-40°C to +90°C)

    hard anodizedaluminum 28

    >11,240 lbs 49.2 ft/s (15 m/s)

    iglide® J-40°F to 194°F(-40°C to +90°C)

    iglide® T500148° to 482°F(-100° to 250°C)

    hard anodizedaluminum,

    anodized aluminum,case hardened

    steel,chrome plated steel,

    stainless steel,

    29

    Screw driven2,200 lbs

    Belt driven65 lbs (300 N)

    Screw Driven3.9 fpm(x m/s)

    Belt Driven16.4 fpm(5 m/s)

    -40°F to 194°F(-40°C to +90°C)

    HTC High Temp350°F

    Screw DrivenHard anodizedaluminum,steel,

    stainless steel,chrome-platedBelt Driven

    Hard anodizedaluminum

    30

    Online LifetimeCalculation

    www.igus.com

    Online LifetimeCalculation

    www.igus.com

    Online LifetimeCalculation

    www.igus.com

    Online LifetimeCalculation

    www.igus.com

    http://www.igus.co.uk/main_fs.asp?KATALOG=XIGLIDUR&GO=DryLin_EXPERTEhttp://www.igus.co.uk/main_fs.asp?KATALOG=XIGLIDUR&GO=DryLin_EXPERTEhttp://www.igus.co.uk/main_fs.asp?KATALOG=XIGLIDUR&GO=DryLin_EXPERTEhttp://www.igus.co.uk/main_fs.asp?KATALOG=XIGLIDUR&GO=DryLin_EXPERTE

  • DryLin®: Sliding instead of RollingDryLin® is a range of maintenance-free, lubrication-free linear slide bearings consisting of four main product lines. Principal features, in addition to zero maintenance, are strength and resistanceto external influences such as corrosion, moisture, chemicals, heat and impact.

    ®

    DryLin®

    45.6

    DryLin

    ®Linea

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    Features• Predictable, long life• Self lubricating and oil-free• Maintenance-free• Dirt and dust resistant• Replaceable liners• Supports high static loads• Needs no messy grease lines• Lightweight• Runs on soft and hard shafts• Constant coefficient of friction• Short strokes and high accelerations• Withstands shocks and vibrations• Dimensionally interchangeable• Corrosion-free

    Benefits= Confidence in design and operation = Eliminate down time and messy lubricants= Save money= Ideal for harsh environments= Lower costs= Eliminate shaft damage= Cleaner, simpler design= Less transportation costs and fatigue= More options, including cost-effective shafts= Smooth movements over design lifetime= No scoring or replacement of shafting= Reduces stress on other components= No redesign/drop-in replacements available= Ideal for high moisture/wash down/chemicals

    Works well with short strokes

    Compared with recirculating ball bushings, DryLin® bearings’ oper-ating characteristics do not depend on the length of travel. Even applications with extremely short strokes are no problem for DryLin® linear bearings.

    Lower surface pressure

    DryLin® linear bearings work through the use of sliding ele ments, in contrast to the design of recirculating ball bear ing systems. Thisresults in a larger contact surface and to a much lower pressure. Theadvantages are:

    • No scoring or galling of shaft• Compatible with non-hardened shafts

    Dry running,withoutlubrication

    DryLin® does not require costlymaintenance or additionalcomponents such as greaselines to function. Designed fordry running, DryLin® linearbearing systems run withoutgrease or oil; this permits operation even applications with dirt orwashdowns- the bearing liners are designed to act as wipers byremoving debris from the system.

    Quiet operation

    The smooth operation is also attributable to the difference betweenrolling and sliding (see graph at the left): No mechanical rolling againsthard surfaces, no collisions between balls resulting in loud running noises. Sliding motion is extremely quiet, only a low "swishing" noiseis heard. Many customers prefer the feel of DryLin® for manualoperations

    Ball bearing system igus® DryLin® linear bearings

    Resistant to dirt, dust and moisture

    DryLin® T BearingBall Bearing

    Ball bearing DryLin®

    Speed Speed

    dB dB

    Comparative noise generation

    http://www.igus.com/iglide-quickspecmailto:[email protected]://www.igus.com

  • Online

    Lifetime

    Calculation

    www.igus.com

    DryLin®: Materials

    45.7

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    DryLin

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    DryLin®

    Suitable Materials for the DryLin® Series

    DryLin® T DryLin® N DryLin® W DryLin® R

    iglide® J

    iglide® J200 1) – –

    iglide® T500 2) – – –

    1) Use only with hard anodized aluminum2) Use only with hardened shafts, preferablystainless steel or chromed shafts

    The coefficient of friction - Not just simple plasticsAll DryLin® materials arecharacterized by excellentcoefficient of friction values in dryoperation. DryLin® linear guidesystems can reach coefficients offriction as low as 0.12 without anyadditional lubricants. Dependingon the load, the kind of applicationand the environmental conditions,this value might be 2 to 3 timeshigher.

    The iglide® T500 materialiglide® T500 is defined by its combination of high temperatureresistance with compressive strength, along with high resistanceto chemicals. iglide® T500 achieves the best wear results with hard-ened stainless steel and case-hardened chrome plated steel shafts.Special characteristics:• Temperature resistant from -148°F to +482°F

    in continuous operation• Universal resistance to chemicals• High compressive strength• Very low moisture absorption • Great wear resistance through the entire temperature range

    The iglide® J materialComprehensive laboratory tests showed that iglide® J is by far the mostsuitable polymer material for most linear motion applications. Specialcharacteristics of iglide® J:• Lowest coefficient of friction on all materials overall• Very low abrasion values during dry operation• Excellent wear resistance• Maintenance free dry operation• Vibration dampening • Very low moisture absorption• Recommended for all shaft materials

    iglide® J – various shaft materials

    DryLin® – Coefficients of friction

    Wear

    iglide® T500 – various shaft materials

    Wear

    Coefficient of friction

    suitable – not available

    Dry Running v = .82 ft/s (0.25 m/s), p = 145 psi

    DryLin® SAluminum

    CaseHardened

    Stainless440C Stainless

    420C

    HardChromePlated

    Dry Running v = .82 ft/s (0.25 m/s), p = 145 psi

    DryLin® S Case 440 HardAluminum Hardened Stainless ChromeShaft Plated

    J200 J T500

    DryLin® SAluminum

    CaseHardened Stainless

    440C

    Stainless420C

    HardChromePlated

    J200 on DryLin® S hard-anodizedshafting

    http://www.igus.co.uk/main_fs.asp?KATALOG=XIGLIDUR&GO=DryLin_EXPERTEhttp://www.igus.com/RoHShttp://www.igus.com/iglide-CADhttp://www.igus.com/iglide-pdfs

  • DryLin® Linear Plain Bearings:DryLin® N, DryLin® W, DryLin® T, DryLin® R, Slide Tables

    ®

    DryLin®

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    iglide® T500 material for heavy-duty operation at high temperaturesin foundries

    Wear in (µm/km)

    Wear Behavior

    The wear behavior of DryLin® R linear plain bearings is a result of the shaft material. iglide® J works well on many different materials. Thesurface load, in addition to the shaft material and roughness, has an effect on the wear.With decreasing surface load, the wear also decreases.

    Operating Temperatures

    iglide® J Material

    Sliding elements made of iglide® J can be used in the tem-perature range between -40°F and 194°F. Because of theexcellent heat conductivity of aluminum as a shaft and hous-ing material, a large increase in bearing temperature onlyoccurs in high-frequency short-stroke applications with a highload.

    See our Online Expert System and ...

    0

    0.2

    0.4

    0.6

    1.2

    iglide®

    JDryLin®

    T

    iglide®

    JAluminum

    Shaft

    iglide®

    JCold Rolled

    Steel

    iglide®

    JStainless

    Steel

    iglide®

    T500

    Aluminum

    Shaft

    iglide®

    T500

    Cold Rolled

    Steel

    iglide®

    T500

    Stainless

    Steel

    0.8

    1.0

    Wear in µm/km for different sliding partners, p = 145 psi

    Online LifetimeCalculationwww.igus.com

    Temperature limits for iglide® J

    iglide® J Application Temperature

    Minimum -40 °F

    Max., long-term +194 °F

    Max,, short-term +248 °F

    iglide® T500 Material

    T500 liners were developed specifically for high temperature andchemical applications, and run particularly well on stainless-steelshafting.

    iglide® T500 Application Temperature

    Minimum - 148 °F

    Max., long-term + 482 °F

    Max., short-term + 599 °F

    Temperature limits for iglide® T500

    http://www.igus.co.uk/main_fs.asp?KATALOG=XIGLIDUR&GO=DryLin_EXPERTEhttp://www.igus.com/iglide-quickspecmailto:[email protected]://www.igus.com

  • DryLin® Linear Plain Bearings:

    45.9

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    DryLin®

    Static Load CapacitySince there is no point-to-point contact with DryLin®, as there is withball bearing systems, the static load capabilities of DryLin are extreme-ly high. At the right find the maximum static load for the largest bear-ing in each series:

    Series Max Static Load

    DryLin R 20,000 lbs

    DryLin T 3,140 lbs

    DryLin W 719 lbs

    DryLin N 220 lbs

    Dynamic Load CapacityThe dynamic load capacity is related to the continuous applicationspeed as shown in the graph, this is due to the P•V value of the iglide®

    J material. The lower the surface speed, the higher the permissibledynamic load. Our available Online Expert System quickly and easilychecks the functionality of a particular DryLin® system for your appli-cation, and is available at www.igus.com. It will give warning if the loadcapacity of a certain bearing is exceeded.

    Loading Capacity

    0.1 1 1010

    100

    1000

    10000

    Load

    F (l

    bs)

    Speed v (m/s)DryLin® T 25DryLin® R 25

    DryLin® N 27

    F = total of loads per rail/shaft

    L

    DryLin® W

    Permissible Speeds

    With low loads DryLin® has been tested at speeds up to 49 fps (15 m/s). The maximum permissible speed is related to the bearingload - the lower the load the higher the permissible speed. Since DryLin® does not rely on complicated rolling elements, but insteadon specially engineered, low wear, low friction glide strips, extremely high speeds and accelerations are now possible. This meansthat DryLin® is ideal for applications where cycle and accelerations must be increased.More significant than the maximum speed is the average speed-per-cycle time. Therefore, in order to calculate the suitability of a par-ticular DryLin® system, the average surface speed should be determined. In applications with intermittent cycles, the highest aver-age surface speed is significant; this is an average taken over a 10-30 minute time periodThe use of DryLin® S hard anodized aluminum as a shaft material decreases the operating temperature in the bearing system due toits thermal conductivity and micro-finish. It is recommended for most applications with short-strokes or high cycles when using theiglide® J/J200 material liners. It is the material we have designed for use with all of our profile guides as well.

    F x V values of comparable DryLin® systems

    2000

    200

    20

    3.5 330.3

    Speed v (ft/s)

    Eccentric Forces

    2:1 Rule = permissible distances of the applied forces

    Online LifetimeCalculationwww.igus.com

    The 2 :1 RuleWhen using linear plain bearings it is important to ensure that the acting forcesfollow the 2:1 Rule (see drawing). If either the load or the drive force (F) isgreater than twice the bearing length (1X), then a binding or interrupted motionmay occur.If the location of the drive force or load cannot be changed, simply increasethe distance between the bearings, or create a counterbalance to move thecenter-of-gravity back within the 2 to 1 ratio.

    http://www.igus.co.uk/main_fs.asp?KATALOG=XIGLIDUR&GO=DryLin_EXPERTEhttp://www.igus.com/RoHShttp://www.igus.com/iglide-CADhttp://www.igus.com/iglide-pdfs

  • DryLin® Linear Plain Bearings:DryLin® N, DryLin® W, DryLin® T, DryLin® R, Slide Tables

    ®

    DryLin®

    45.10

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    Chemical Resistance

    iglide® J is resistant to weak acids, diluted lyesand to fuels and all types of lubricants. Even thefrequent chemical washdowns of machines inthe food industry are not a problem for DryLin®

    linear plain bearings.T500 liners were developed specifically for chem-ical resistance and high temperature applica-tions. T500 liners run particularly well when com-bined with stainless steel shafts, which are alsorecommended for chemical resistance.

    Corrosion Behavior

    The low moisture absorption of iglide® J and T500 allows designin underwater areas. With the use of stainless steel shafts oranodized aluminum, a corrosion resistant guide results. Anodizedaluminum is resistant to chemically neutral materials in the PHrange 5 to 8. For special applications it is recommended totest coated aluminum sample parts to examine results prior totheir use.

    Clean Room Suitability andESD Compatibility

    All DryLin® guide systems are qualified for cleanroom applications. The differentiation between thevarious cleanroom classes is only dependent on load and speed of the application. The combinationof iglide® J and hard anodized aluminum is classified as level 1 in the ESD compatibility according toSEMI E78-0998 (High est rank).The following DryLin® guide systems were examined: N40, W10, T25 and T30. See ➤ page 45.11 fordetailed results.

    Chemical resistance of iglide® J and iglide® T500

    iglide® J iglide® T500Medium ResistanceAlcohol Resistant Resistant

    Chlorinated hydrocarbons Resistant Resistant

    Ester Not Resistant Resistant

    Greases, oils Resistant Resistant

    Ketones Conditionally Resistant Resistant

    Fuels Resistant Resistant

    Weak acids Conditionally Resistant Resistant

    Strong acids Not Resistant Conditionally Resistant

    Weak lyes Resistant Resistant

    Strong lyes Resistant Resistant

    Sea water Resistant Resistant

    Golden manus® winner for Inspection equipment for offshoredrilling riserplant with iglide® G300 and DryLin® N

    http://www.igus.com/iglide-quickspecmailto:[email protected]://www.igus.com

  • 45.11

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    DryLin®

    All DryLin®-Guides are clearly qualified for clean room applications.The differentiation between the various clean room classes is onlydependent on load and speed of the application. The combinationof iglide® J and hard anodized aluminum is classified as level 1 inthe ESD compatibility accord ing to SEMI E78-0998 (Highest rank).

    The following DryLin®-Guides have been examined: N40, W10, T25 and T30. Detailed results can be found below:

    Linear guide DryLin® TK01-30-01"For the linear guiding system DryLin® TK01-30-01 by igus®, it is possible, on the calculations of the likelihood of viola-tion of the threshold values of the detection sizes 0.2 µm, 0.3 µm, 0.5 µm and 5 µm with a motion speed of v = 0.1 m/s, toclearly derive a suitability for clean rooms classified as ISO-Class3 according to DIN EN ISO 14644-1".

    Linear guide DryLin® NK02-40-02"For the linear guiding system DryLin® NK02-40-02 by igus®, it is possible, on the calculations of the likelihood of viola-tion of the threshold values of the detection sizes 0.2 µm, 0.3 µm,0.5 µm and 5 µm with a motion speed of v = 1 m/s, to clearlyderive a suitability for clean rooms classified as ISO-Class 6 accord-ing to DIN EN ISO 14644-1".

    The measurement results of the ESD compatibility according to SEMI E78-0998 show that the linear guiding system DryLin® NK02-40-02 can be classified "level 1" (highest rank). See Fraunhofer IPA Report No.: IG 0308-295 73.

    Linear guide DryLin® TK01-25-02"For the linear guiding system DryLin® TK01-25-02 by igus®, it is possible, on the calculations of the likelihood of viola-tion of the threshold values of the detection sizes 0.2 µm, 0.3 µm, 0.5 µm and 5 µm with a motion speed of v = 1 m/s, toclearly derive a suitability for clean rooms classified as ISO-Class5 according to DIN EN ISO 14644-1".

    The measurement results of the ESD compatibility according to SEMI E78-0998 show that the linear guiding system DryLin® TK01-25-02 can be classified "level 1" (highest rank).

    Linear guide DryLin® WK-10-40-15-01"For the linear guiding system DryLin® WK-10-40-15-01 by igus®,it is possible, on the calculations of the likelihood of violation ofthe threshold values of the detection sizes 0.2 µm, 0.3 µm, 0.5 µm and 5 µm with a motion speed of v = 1 m/s, toclearly derive a suitability for clean rooms classified as ISO-Class 6according to DIN EN ISO 14644-1".

    The measurement results of the ESD compatibility according to SEMI E78-0998 show that the linear guiding system DryLin® WK-10-40-15-01 can be classified "level 1" (highest rank). See Fraunhofer IPA Report No.: IG 0308-295 74.

    Photographs of the measuring points MP1 to MP4 of the linear bearingDryLin® NK02-40-02 used for the airborne particle emissionmeasurements

    Photographs of the measuring points MP1 to MP4 of the linear bearingDryLin® TK01-25-02 used for the airborne particle emission measurements

    Photographs of the measuring points MP1 to MP4 of the linear bearing DryLin® WK-10-40-15-01 used for the airborne particle emissionmeasurements

    DryLin® –Cleanroom Suitability

    http://www.igus.com/RoHShttp://www.igus.com/iglide-CADhttp://www.igus.com/iglide-pdfs

  • DryLin® Linear Plain Bearings:Floating Bearing/Self-Alignment

    ®

    DryLin®

    45.12

    DryLin

    ®Linea

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    When using systems with 2 parallel rails, one side must bedesignated as the “fixed” rail, and the opposite side as the “floating”rail.

    Why use floating bearings?• promotes smooth gliding performance andmaximizes bearing life

    • prevents binding caused by parallelism and angleerrors

    • decreases necessary drive force and wear byminimizing friction-forces

    • Enhances the precision of the system over thebearings’ lifetime.

    • Reduce assembly time and cost

    Fixed BearingsThe “fixed” bearing rail should be positioned closest to the driveforce. This rail will determine the precision of the system; no systemshould contain more than two “fixed” bearings.

    Floating/Self-Aligning BearingsThe “floating” rail should be the rail located furthest from the driveforce. It is to act only as a guide, and will compensate for anymisalignments or angle errors in the system ensuring properfunctionality.

    Mounting SurfacesThe mounting surfaces for rails and bearings should have a veryflat surface (e.g milled surface) in order to enhance performance.Variations in these surfaces may be compensated for by usingfloating bearings.

    Standard Version

    Maximum float = .02” (.5 mm)

    Maximum float = .04” (1 mm)

    Horizontal Float “LLZ” Vertical Float “LLY”

    Standard Version Horizontal Float “LLZ” Vertical Float “LLY”

    Standard Version Horizontal Float “LLZ” DryLin® W can alsoalleviate edge pressureIdeal for non-flat, evensurfaces

    Vertical Float “LLY”

    DryLin® N - Floating Systems

    DryLin® T - Floating Systems

    DryLin® W - Floating Systems

    Fixed and Floating Bearing Mounting Instructions

    Online LifetimeCalculationwww.igus.com

    Maximum float = .08” (2 mm)

    http://www.igus.co.uk/main_fs.asp?KATALOG=XIGLIDUR&GO=DryLin_EXPERTEhttp://www.igus.com/iglide-quickspecmailto:[email protected]://www.igus.com

  • 45.13

    PDF: www.ig

    us.co

    m/drylin

    -pdfs

    CAD: www.ig

    us.co

    m/drylin

    -CAD

    RoHS in

    fo: www.ig

    us.co

    m/RoHS

    DryLin

    ®Linea

    rPlain Bea

    rings

    ®

    DryLin®DryLin® Linear Plain Bearings:Floating Bearing/Self-Alignment - DryLin® T, DryLin® R

    DryLin® R linear plain bearings in the 03 Design Series areself-aligning and offer great advantages in applications withparallel shafts. They are able to compensate for alignment andparallelism errors and should be used on the shaft locatedfurthest from the drive mechanism.

    The design provides a raised spherical area on the outerdiameter of the aluminum adapter for self-alignment. Loadcapacity is the same as the fixed version.

    Even in unfavorable edge-load conditions, the load issupported by the entire projected surface

    In order to compensate for parallelism errors between twoshafts, the outer diameter is designed to be smaller than the

    housing bore diameter by 0.2 - 0.3 mm (depending on the size).With the use of mounted O-rings, these bearings have an elasticbearing seat.

    Compensation for angle errorsSeries RJUI/RJUM/OJUI/OJUM-03 ±0.5°Series RJUM-06-LL/OJUM-06-LL ±3.5°

    Compensation of parallelism errorsSeries RJUI/RJUM/OJUI/OJUM-03 ±0.1 mm (.004”)Series RJUM-06-LL/OJUM-06-LL ±3 mm (.12”)

    The spherical DryLin® adapters can com-pensate for alignment errors. A hard-anodization protects the aluminum adapterfrom wear.

    With built in clearances and the use of O-rings, the self-aligning DryLin® R bearingsof the 03 Design Series can compensate forparallelism errors.

    The self-aligning DryLin® R bearings of the06 LL design series can compensateparallelism errors up to ± .12” (3mm).

    DryLin® R

    DryLin® T Shown As Example Only

    Installation variation horizontal withfloating bearing in the Z-direction

    Fixedbearing

    Floatingbearing VF-Y

    Fixedbearing

    Rail

    Floatingbearing HF

    Carriage

    Fixed bearingFloating

    bearing HF

    Horizontal mounting version withfloating bearing in the Y-direction andlateral mounting carriage

    Installation variation lateralwith floating bearing in the Z-direction

    http://www.igus.com/RoHShttp://www.igus.com/iglide-CADhttp://www.igus.com/iglide-pdfs

  • DryLin® – Applications®

    DryLin®

    45.14

    DryLin

    ®Linea

    rPlain Bea

    rings

    Internet: http://w

    ww.ig

    us.co

    mem

    ail: sa

    les@

    igus.co

    mQuickS

    pec

    : http://w

    ww.ig

    us.co

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    -quicks

    pec

    Telephone

    1-80

    0-52

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    70

    Packaging machines

    Testing and sorting machines

    Feeding systems for a blister machine

    Machining Center

    Positioning of milling heads

    Machining centers for the furniture industry

    Storage solutions for a tape library

    Flatbed ink-jet printers

    Packaging technology

    Height-adjustment for an encoding machine

    DryLin® T

    DryLin® N

    DryLin® W

    DryLin® R

    DryLin® HTS

    http://www.igus.com/slide_tables.asphttp://www.igus.com/drylinr.asphttp://www.igus.com/show_dw.asphttp://www.igus.com/show_dn.asphttp://www.igus.com/show_dt.asphttp://www.igus.com/iglide-quickspecmailto:[email protected]://www.igus.com