3 Timken Torrington Needle Roller Bearings

1 3873388 Drawn Cup Needle Roller Bearings426 Radial Needle Roller and Cage Assemblies446 Heavy Duty Needle Roller Bearings462 Needle Roller Bearings (Metric)490 Track Rollers Cam Followers520 Thrust Bearings548 Drawn Cup Roller Clutches3 Timken Torrington Needle Roller , 8:41 AM387with M prefixsignifies closed end inchnominal dimensionsBore16 = 16 16 = 1"18 = 18 16 = 1 1 8"Width12 = 12 16 = 3 4"16 = 16 16 = 1"Suffixes: limited availabilityFplastic cageGFgrease fitting, closed endOHoil holeOHEoil hole in closed endPrefixesBfull complement of mechanicallyretained Needle rollersGextraprecisionHheavy seriesJcaged complement of Needle rollersMclosed endTone sealTTtwo sealsMJH - 18161 - OHInner Rings (with 4-digit number) Inch Nominal DimensionsPrefixesIRregular width (for use with drawn cup Bearings only)IRAextended width (for use with drawn cup Bearings only)Suffixes.

2 Limited " width toleranceOHoil hole and lube grooveI R -14 16-OHBore 5 = 5 16"14 = 14 16 = 7 8"Width (IR series only)12 = 12 16 = 3 4"16 = 16 16 = 1"Drawn Cup Needle Roller Bearings Metric Nominal DimensionsDrawn Cup Needle Roller Bearings Inch Nominal DimensionsWidth12 = 12 mm20 = 20 mmSuffixRS lip contact seal on one side of the lip contact seal on each side of the bearingAS1 lubricating holeHK1012AS1 Bore diameter10 = 10 mm25 = 25 mmPrefixHK drawn cup bearing , caged open endsBK drawn cup bearing , caged, closed endInner Rings Metric Nominal DimensionsJR10 x 14 x 12JS1 PrefixJRinner ringJRZinner ring without mounting chambersOutside diameter14 = 14 mm25 = 25 mmSuffixJS1 lubricating holeBore diameter10 = 10 mm20 = 20 mmWidth12 = 12 mm30 = 30 , 8:41 AM3883 DRAWN CUP Bearings METRIC SERIEST ypes .. 390 Construction.

3 390 Mounting .. 391 Inner Rings .. 391 Load Ratings .. 391 Installation .. 393 Tables of DimensionsBearings with Open Ends andClosed at One End .. 395 Sealed Bearings .. 397 DRAWN CUP Bearings INCH SERIEST ypes .. 398 Construction .. 398 Mounting .. 399 Inner Rings .. 400 Load Ratings .. 400 Installation .. 402 Tables of DimensionsCaged and Full Complement Bearings .. 406 Extra-Precision .. 408 Sealed Bearings .. 410 Inner Rings .. 412 Drawn CupNeedle RollerBearingsPagePage389 DRAWN CUP Needle Roller Bearings , 8:41 AM389390 DRAWN CUP NEEDLEROLLER Bearings Metric SeriesWhen a rolling bearing is needed for a compact and economicdesign and where it is not practical to harden and grind thehousing bore, or where the housing materials are of low rigiditysuch as cast iron, aluminum or even plastics, drawn cupneedle Roller Bearings should be standards are: ISO 3245 Rolling Bearings Needle Roller Bearings , drawncup, without inner ring, boundary dimensions and toler-ances.

4 ANSI/ABMA Needle Roller Bearings Radial, metricdesign. DIN 618 Needle Roller Bearings with cage Drawn cupswith open end, drawn cup withclosed selecting specific drawn cup Needle Roller Bearings , theNeedle bearing Engineering section of this catalog should outer ring in the form of a cup is accurately drawn, and nosubsequent machining is performed. Drawn cup Needle rollerbearings of series HK have open ends. They are also avail-able with one seal HKRS and with two seals Thestamped lip of a drawn cup Needle Roller bearing of seriesHKRS with one seal is at the seal cup Needle Roller Bearings of series BK are closedat one end. They are used for shaft end mounting. The openend is not cup Needle Roller Bearings are also available withtwo Needle Roller and cage assemblies. They have a lubricat-ing hole in the outer ring.

5 Metric series drawn cup bearingswith one Needle Roller and cage assembly may be madeavailable on request with a lubricating hole, indicated by one-piece steel cage used in most Timken Torringtondrawn cup Bearings is designed to provide rigidity and mini-mize wear. This cage design separates the Needle rollerguiding and retention bearingsTorrington drawn cup Bearings are offered with integral tables of dimensions on page 397 indicates those sizesavailable with lip contact seals. The seal lip design achievesa light and constant contact with the inner raceway throughoutthe range of mounted bearing clearances thereby ensuringpositive sealing and low frictional drawn cup Bearings are intended to retain greaseor non-pressurized oil within a bearing while also preventingcontaminants entering the raceway of shaft design for sealed Bearings are given inthe Engineering section of this standard lip contact seals are compatible with com-mon lubricating oils and petroleum based fuels, but they areadversely affected by certain fire-resistant hydraulic fluids andmost common solvents.

6 Sealed drawn cup Bearings arenormally filled with a high quality lithium soap base generalpurpose grease. The seal material and grease properties limitthe bearing operating temperature between -30 C and +100 the operating temperature must be outside of the rangefor the seals mentioned here, or if the seals are exposedto unusual fluids please consult Timken OF METRIC SERIES DRAWN CUP Needle Roller BEARINGSD rawn cup Needle rollerDrawn cup Needle rollerDrawn cup Needle Roller Bearings , bearing , open endsbearing, closed endopen ends, sealedSUFFIXESAS1lubricating holeRSone seals DRAWN CUP Needle Roller , 8:41 AM3903913 bearing MOUNTING FITSAND INTERNAL CLEARANCED rawn cup Bearings are manufactured to a degree of preci-sion that will satisfy the radial clearance requirements of mostapplications. The total radial clearance for an installed drawncup bearing results from the build up of manufacturing toler-ances of the housing bore, the inner raceway diameter andthe bearing , as well as the minimum radial clearance requiredfor the application.

7 For metric series drawn cup Bearings requiring closecontrol of radial internal clearance the recommended housingbore tolerance is N6 and h5 tolerance for the inner racewaydiameter. When such exacting close control of radial internalclearance is not required, the user may select N7 housingbore and h6 inner raceway diameter for housing materials of low rigidityMetric series drawn cup Bearings used in housings made frommaterials of low rigidity or steel housings of small section therecommended housing bore tolerance is R6 (R7). To main-tain normal radial internal clearance the inner raceway diam-eter tolerance should be h5 (h6).Outer ring rotationFor metric series drawn cup bearing applications where theouter ring rotates with respect to the load, it is recommendedthat both the housing bore and the inner raceway diameterbe reduced using R6 (R7) and f5 (f6) tolerance motionMetric series drawn cup bearing applications involving oscil-lating motion may require reduced radial internal reduction may be accomplished by increasing the innerraceway diameter using j6 RINGSWhen it becomes impractical to meet the shaft racewaydesign requirements (hardness, case depth, surface finishetc.)

8 Outlined in the Needle bearing Engineering section ,standard inner rings may be used with metric series drawncup Bearings . These are tabulated on pages 483-488. It isrecommended that when metric series inner rings are usedwith metric series drawn cup Bearings , they should bemounted with a loose transition fit on the shaft using g6 (g5)shaft diameter tolerance. The inner ring should be end-clamped against a shoulder. If a tight transition fit must beused, [shaft diameter tolerance h6 (h5)], to keep the innerring from rotating relative to the shaft, the inner ring outsidediameter, as mounted, must not exceed the raceway diameterrequired by the drawn cup bearing for the particular applica-tion. In case the outside diameter of the inner ring, whenmounted on the shaft, exceeds the required raceway diameterfor the matching drawn cup bearing , it should be ground toproper diameter while mounted on the RATING FACTORSD ynamic loadsDrawn cup Needle Roller Bearings can accommodate onlyradial = FrP = The maximum dynamic radial load that may beapplied to a drawn cup bearing based on thedynamic load rating, C given in the tabular load should be < loadsf0 = C0 P0f0 static load safety factorC0 basic static load rating (kN)P0 maximum applied static load (kN)

9 To ensure satisfactory operation of drawn cup needleroller Bearings under all types of conditions the staticload safety factor f0 should be > rating lifeWhen application data includes details of operating tem-perature, oil viscosity, operating speed and the applied loadmeets the < C/3 condition adjusted rating life may be evalu-ated using the information given on pages E81 to E87 of BEARINGST imken also has available Bearings with other cage designsand materials such as reinforced engineered polymer foruse where operating conditions CUP Needle Roller Bearings , 8:41 AM391392 INSPECTION OF DRAWN CUP NEEDLEROLLER BEARINGSA lthough the bearing cup is accurately drawn from strip steel,because of its fairly thin section it may go out of round duringheat treatment. When the bearing is pressed into a true roundhousing or ring gage, of correct size and wall thickness, itbecomes round and is sized properly.

10 For this reason, it isincorrect to inspect an unmounted drawn cup bearing bymeasuring the outside diameter. The correct method forinspecting the bearing size is to:1. press the bearing into a ring gage of proper size2. plug the bearing bore with the appropriate go and no go gages or measure it with a tapered arbor(lathe mandrel)The go gage size is the minimum Needle Roller complementbore diameter. The no go gage size is larger than themaximum Needle Roller complement bore diameter by 0,002 1 HK Series Bearingsdimensions mmnominalneedle Roller complementboreringbore diameter (Fws min)diametergagemm* ,4843,0063,02447,9844,0104,02858,9845,01 05,02869,9846,0106,028710,9807,0137,0318 11,9808,0138,031912,9809,0139,0311013,98 010,01310,0311215,98012,01612,0341217,98 012,01612,0341318,97613,01613,0341419,97 614,01614,0341520,97615,01615,0341621,97 616,01616,0341722,97617,01617,0341823,97 618,01618,0342025,97620,02020,0412227,97 622,02022,0412531,97225,02025,0412834,97 228,02028,0413036,97230,02030,0413541,97 235,02535,0504046,97240,02540,0504551,96 745,02545,0505057,96750,02550,0506067,96 760,03060,060* The ring gage sizes are in accordance with ISO N6 lower limit.