Needle roller Bearings Needle roller Bearings
Needle Roller Bearing Needle Roller Bearing
Double Row Needle Roller Bearings Double Row Needle Roller Bearings
Needle Roller Bearings Needle Roller Bearings
Outer Ring Needle Roller Bearing Outer Ring Needle Roller Bearing
Needle Rollers Bearings Needle Rollers Bearings

Needle Roller Bearings

Features


  • Needle roller bearings are essentially cylindrical roller bearings except that their cylindrical rollers have a length 3 to 10 times their diameter (versus a length less than 3 times their diameter). Needle bearings are also essentially bearings that utilize small & cylindric rollers. Therefore, the ratio of the bearing outside diameter to the inscribed circle diameter is small, and they have a rather high radial load capacity. Even though they have a low cross section, needle roller bearings have a high radial load capacity and are exceptionally apt for bearing applications where radial space is limited.
  • There are numerous types available, and many have no inner rings. The drawn-cup type has a pressed steel outer ring and the precision (solid) type has a machined outer ring. There are also cage-and-roller assemblies without rings. Most bearings have pressed steel cages, but some are without cages.
  • Drawn cup needle roller bearings have a drawn outer shell serving as a raceway for the rollers and are installed with a press fit in the housing. They are ideal for many of the following applications: transmissions, transfer cases, engines, valve trains, steering and braking systems, axle supports, outboard engines, textile industry, power tools, copiers, fax machines, paper-moving equipment, and appliances.
  • Needle Roller Bearings Available from GMP Bearings
  • SCE and SCE-PP Series - Drawn cup needle roller bearing, Open ends for through shafts, cage guided, with/without seals, Inch dimensional
  • HK, and HK-RS Series - Drawn cup needle roller bearing, Open ends for through shafts, cage guided, with/without seals, Metric dimensional
  • BCE and BCE-P Series - Drawn cup needle roller bearing, One end closed for shaft ends, cage guided, with/without seals, Inch dimensional
  • BK, and BK-RS Series - Drawn cup needle roller bearing, One end closed for shaft ends, cage guided, with/without seals, Metric dimensional

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Needle roller bearings are a bearing that is classified as either radial or thrust depending on the direction of the load being supported. Needle roller bearings include bearings whose rollers slightly exceed the size range of needle rollers as stipulated by ISO. Needle roller bearings include drawn cup and solid radial bearings, as well as application-specific cam followers, and roller followers. Thrust bearings include thrust needle bearings.
Cage & Needle Roller Assemblies
NSK cage & Needle roller assemblies consist of a complement of needle rollers held in place by a cage. Their unitized design makes for easy handling and installation. With no inner or outer ring, the low cross-section provides maximum load-carrying capability within the smallest envelope. Properly lubricated, they can operate at high speeds thanks to the unique cage, which guides the rollers precisely. The controlled contour rollers in cage & Needle roller assemblies have an optimum profile which reduces end stresses, allows operation under moderate misalignment and prolongs bearing life.
Drawn Cup Needle Roller Bearings
NSK drawn cup needle roller bearings (with a cage and full complement of rollers) have a unique outer ring structure. They have the following features: the thinnest outer ring among rolling bearings, high load capacity, high maximum permissive load owing to the use of carefully selected special alloy steel plates, a surface-hardened cage with high resistance to wear, high limiting speed, and ease of mounting.
Solid Needle Roller Bearings
Solid needle roller bearings are high-accuracy bearings with maximum load capacity within a limited space for various operating conditions. Made of carefully selected vacuum-degassed bearing steel or carburizing steel, the raceway rings are finished with accurate grinding after heat treatment. The outer rings have strong integrated ribs and contain high-accuracy rollers that have the proper crowning finish. Lightweight and extremely strong, the cage guides the rollers accurately and smoothly.
Thrust Needle Roller Bearings
Thrust needle bearings type comes in metric and inch designs. The cage & Needle roller assembly for the thrust needle bearing is a cage that has two pieces joined together, to which surface hardening is applied after the precision press processing of a steel plate, and in which high accuracy rollers are incorporated, in order to achieve rigidity and wear resistance. Many rollers are retained securely in the cage, taking large axial load, and yet rotating smoothly. Mounting space is so small that it is easy to replace a conventional sliding thrust washer. Different thicknesses of various types of thrust raceway washers are available in this cage & Needle roller assembly, which allows selection of the appropriate thickness suited for bearing peripheral mounting conditions.
Cam Followers
Cam followers, which are equipped with a thick-wall outer ring, crowned rollers, and a stud with a hardened raceway surface, are especially tough and can sustain shock loads.
Roller Followers
The roller follower with a thick-wall outer ring and crowned roller has a large load capacity which enables it to carry shock loads. Handling is easy since it it non-separating and applications such as track rollers, cams and rocker arms are wide.
BearingPrincipal dimensionsBasic load ratingsFatigue load limitSpeed ratingsMass
DesignationdynamicReference speedLimiting speed
F wDCCC 0P ur/minkg
mmkNkN
NK 5/10 TN510102,2920,21236000400000,003
NK 5/12 TN510122,922,70,2936000400000,004
NK 6/10 TN612102,552,360,2534000380000,005
NK 6/12 TN612123,33,20,34534000380000,006
NK 7/10 TN714102,812,750,2932000360000,007
NK 7/12 TN714123,583,750,41532000360000,008
NK 8/12 TN815123,84,250,46532000360000,009
NK 8/16 TN815165,015,850,6732000360000,012
NK 9/12 TN916124,45,20,5730000340000,01
NK 9/16 TN916165,727,20,81530000340000,013
NK 10/12 TN1017124,45,40,6228000320000,01
NK 10/16 TN1017165,9480,928000320000,013
NK 12/121219126,718,150,96526000300000,012
NK 12/161219169,13121,4626000300000,016
RNA 49001422138,810,41,2526000300000,017
NK 14/1614221610,212,51,5324000280000,021
NK 14/2014222012,816,62,0824000280000,026
RNA 4900 RS1422137,378,150,9513000120000,016
RNA 4900.2RS1422137,378,150,95-120000,016
NK 15/2015232013,818,32,2824000260000,027
NK 15/1615231611141,724000260000,022
RNA 49011624139,912,21,4622000260000,017
NK 16/1616241611,715,31,8622000260000,022
NK 16/2016242014,5202,522000260000,028
RNA 690116242216,123,22,922000260000,031
RNA 4901 RS1624138,099,651,1422000110000,018
RNA 4901.2RS1624138,099,651,14-110000,018
NK 17/2017252015,1222,7522000260000,03
NK 17/1617251612,116,6222000260000,024
NK 18/1618261612,817,62,1622000240000,025
BearingPrincipal dimensionsBasic load ratingsFatigue load limitSpeed ratingsMass
DesignationdynamicReference speedLimiting speed
F wDCCC 0P ur/minkg
mmkNkN
NK 18/2018262016,123,6322000240000,031
NK 19/1619271613,4192,3220000240000,026
NK 19/2019272016,525,53,220000240000,032
RNA 490220281311,215,31,8319000220000,022
RNA 4902 RS2028139,13121,41900095000,022
NK 20/1620281613,219,32,3619000220000,027
RNA 690220282317,2273,419000220000,04
RNA 4902.2RS2028139,13121,4-95000,022
NKS 2020322023,3273,4518000200000,049
NK 21/2021292017,2273,4519000220000,035
RNA 490322301311,416,31,9618000200000,022
RNA 4903.2RS2230139,5212,91,5-90000,023
NK 22/1622301614,221,62,6518000200000,03
NK 22/2022302017,9293,6518000200000,037
RNA 690322302318,730,53,918000200000,042
RNA 4903 RS2230139,5212,91,51800090000,023
NKS 2222352024,6303,916000190000,062
NK 24/1624321615,424,5316000190000,032
NK 24/202432201932,54,0516000190000,04
NKS 242437202633,54,2515000170000,066
NK 25/1625331615,124,5316000180000,033
NK 25/202533201932,54,1516000180000,042
RNA 490425371721,6283,5515000170000,052
RNA 690425373035,2536,9515000170000,1
RNA 4904 RS25371719,422,42,751500075000,056
RNA 4904.2RS25371719,422,42,75-75000,056
NKS 2525382027,5364,5515000170000,068
NK 26/1626341615,7263,215000170000,034
NK 26/2026342019,434,54,315000170000,042
NK 28/202837202236,54,6514000160000,052
BearingPrincipal dimensionsBasic load ratingsFatigue load limitSpeed ratingsMass
DesignationdynamicReference speedLimiting speed
F wDCCC 0P ur/minkg
mmkNkN
NK 28/3028373031,9607,814000160000,082
RNA 49/2228391723,3324,0514000150000,05
RNA 69/2228393036,9577,514000150000,098
NKS 2828422028,639513000150000,084
NK 29/20 TN29382024,642,55,214000150000,05
NK 29/3029383031,9607,814000150000,084
NK 30/20 TN30402025,5445,513000150000,061
NK 30/30 TN30403036,972913000150000,093
RNA 490530421724,234,54,313000150000,061
RNA 690530423038628,1513000150000,11
RNA 4905 RS30421721,627,53,351300063000,06
RNA 4905.2RS30421721,627,53,35-63000,06
NKS 3030452231,9435,512000140000,1
NK 32/20 TN32422026,448612000140000,064
NK 32/3032423034,165,58,6512000140000,1
RNA 49/2832451725,136,54,5512000140000,073
RNA 69/2832453039,665,58,6512000140000,14
NKS 3232472234,146,5612000140000,11
NK 35/20 TN35452027,5526,5511000130000,07
NK 35/30 TN35453040,28510,611000130000,11
RNA 490635471725,5394,911000130000,069
RNA 690635473042,9759,811000130000,13
RNA 4906 RS35471723,3323,91100056000,069
RNA 4906.2RS35471723,3323,9-56000,069
NKS 3535502235,2506,411000120000,12
NK 37/2037472025,146,55,8511000120000,077
NK 37/3037473036,976,51011000120000,11
NKS 3737522236,9546,9510000120000,12
NK 38/2038482025,5496,211000120000,079
NK 38/3038483037,48010,411000120000,12
BearingPrincipal dimensionsBasic load ratingsFatigue load limitSpeed ratingsMass
DesignationdynamicReference speedLimiting speed
F wDCCC 0P ur/minkg
mmkNkN
NK 55/2555682540,28811,2750085000,18
NK 55/3555683552,312216750085000,25
NKS 5555722244,67810700080000,22
RNA 491058722247,38511700080000,16
RNA 4910 RS58722240,269,58,8700034000,16
RNA 691058724073,715019700080000,31
RNA 4910.2RS58722240,269,58,8-34000,16
NK 60/25 TN60722546,811013,4670075000,17
NK 60/356072355513417,6670075000,26
NKS 6060802862,710413,7630075000,34
RNA 491163802557,210613,7630070000,26
RNA 691163804589,719024630070000,47
NK 65/256578254410413,2630070000,22
NK 65/3565783558,314619,3630070000,31
NKS 656585286611415600067000,36
NK 68/25688225449512600067000,24
NK 68/3568823560,514619600067000,34
RNA 491268852560,511414,6600067000,28
RNA 691268854593,520426600067000,49
NK 70/2570852544,69812,5600067000,26
NK 70/3570853561,615019,6600067000,37
NKS 7070902868,212015,6560063000,38
RNA 491372902561,612015,3560063000,31
RNA 691372904595,221227560063000,58
NK 73/2573902552,810613,7560063000,3
NK 73/3573903573,716321,6560063000,43
NK 75/2575922553,911014530060000,32
NK 75/3575923574,817022530060000,45
NKS 7575952870,413217530060000,4
NK 80/2580952556,112716500056000,3
BearingPrincipal dimensionsBasic load ratingsFatigue load limitSpeed ratingsMass
DesignationdynamicReference speedLimiting speed
F wDCCC 0P ur/minkg
mmkNkN
NK 80/3580953576,519025500056000,43
RNA 4914801003084,216321,6500056000,46
RNA 6914801005412828537,5500056000,86
RNA 6915851055413029038480053000,94
NK 85/25851052569,313217480053000,43
RNA 4915851053084,217022,4480053000,49
NK 85/35851053596,820027480053000,6
NK 90/25901102572,114018,3450050000,45
RNA 491690110308818324450050000,52
NK 90/35901103510121629450050000,63
RNA 6916901105413431541,5450050000,99
NK 95/26951152673,714619430048000,49
NK 95/36951153610523230,5430048000,68
NK 100/261001202676,515619,6400045000,52
RNA 49171001203510825032400045000,66
NK 100/361001203610825032400045000,72
RNA 69171001206316542554400045001,2
RNA 69181051256317245057380043001,35
NK 105/261051252678,116620,8380043000,54
RNA 49181051253511226533,5380043000,75
NK 105/361051253611226533,5380043000,71
NK 110/301101303096,822027,5360040000,65
RNA 49191101303511427034360040000,72
NK 110/401101304012330538360040000,83
RNA 69191101306317246557360040001,45
RNA 49201151404012528034,5340040001,15
RNA 48221201403093,523227,5340038000,67
RNA 49221251504013030036,5320036001,25
RNA 4824130150309925530320036000,73
RNA 49241351654517640547,5300034001,85
BearingPrincipal dimensionsBasic load ratingsFatigue load limitSpeed ratingsMass
DesignationdynamicReference speedLimiting speed
F wDCCC 0P ur/minkg
mmkNkN
RNA 48261451653511932537,5280032000,99
RNA 49261501805019848055260030002,2
RNA 48281551753512134538260030001,05
RNA 49281601905020551058,5240028002,35
RNA 48301651904014741546,5240028001,6
RNA 48321752004015745050220026001,7
RNA 48341852154517952057220024002,55
RNA 48361952254519057060200024002,7
RNA 48382102405022071073,5190022003,2
RNA 48402202505022473575180020003,35
RNA 48442402705023881581,5170019003,6
RNA 4848265300603471120108150017005,4
RNA 4852285320603581200114140015005,8
RNA 4856305350694291320127130014009,3
RNA 48603303808059418001701100130012,5
RNA 48643504008060519001761100120013,5
RNA 48683704208061619601801000120014
RNA 4872390440806272040186950110015
RNA 48764154801009683000265900100026

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