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PRODUCT

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.

 

 

Needle roller bearings NK series that have metric dimensions, precision ground raceways with ribs, without Inner Rings, cage guided rollers, with/without Seals. And it has no inner ring, therefore they’re lighter than needle roller bearings of the series NKI. They can be mounted directly on the shaft. They support relatively high radial loads and allow higher speeds.

 

 

Needle roller bearings without an inner ring are an excellent choice for compact bearing arrangements if the shaft can be hardened and ground. Eliminating the need for a separate inner ring enables a larger shaft diameter and a stiffer arrangement. Axial displacement of the shaft relative to the housing is only limited by the width of the raceway on the shaft. By machining the shaft raceways to the appropriate dimensional and form accuracy, it is possible to obtain bearing arrangements with heightened running accuracy.

 

 

Application

Needle roller bearings 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.

 

Bearing Model

Shaft Diameter

(mm)

Dimensions(mm)Basic Load Rating(N)Limiting Speed(rpm)Weight(Kg)
FwDCDyn.CStat.CoOil
NK5/1055101021001400367800.0033
NK5/85510821011401367810.0033
NK5/1255101230002650390000.00357
NK6/1066121026002200370000.005 
NK6/1266121233503150370000.006 
NK7/1077141028502650340000.0069
NK7/1277141236503600340000.008
NK8/1288151239504100320000.0087
NK8/1688151651005800320000.012
NK9/1299161251015801320010.01
NK10/101010171047515301290010.01
NK10/121010171247525302290020.010 
NK10/161010171662007800290000.013
NK12/121212191260006400270000.012
NK12/161212191682009800270000.016 
NK14/16141422161010011500250000.021
NK14/1214142212140113801240010.025
NK14/20141422201280015600250000.027
NK15/1215152312860011000210000.025
NK15/16151523161070012700240000.022
NK15/20151523201360017200240000.027
NK16/16161624161130013900230000.024
NK16/20161624201040016800230000.029
NK17/1617172516900013500140000.024
NK17/20171725201500020000230000.031
NK18/20181826201550019800220000.032
NK18/16181826161250016200220000.026
NK19/16191927161300017000220000.028
NK20/16202028161050013800210000.03
NK20/20202028201150021800210000.034
NK21/12212129121300125001120010.033
NK21/16212129161350018700210000.029
NK21/20212129201350118701210010.037
NK22/16222230161350018000115000.03
NK22/20222230201289720397149970.045
NK24/16242432161289820398149980.032
NK25/16252533161290020400150000.033
NK25/20252533201680028500150000.043
NK25/302525333018800305001650000.062
NK26/16262634161500023000163000.034
NK26/20262634201700030000163000.042
NK28/20272837202200034000165000.053
NK28/30272837303300057000120000.082
NK29/20292938202190034000150000.054
NK29/30292938303250057000150000.081
NK30/20303040202060032000150000.065
NK30/30303040303150050000150000.098
NK32/20323242202260033500150000.068
NK32/30323242303350060000120000.103
NK35/20353545201380026900120000.074
NK37/20373747202490043500120000.077
NK37/30373747303700073000120000.113
NK38/20383848202550045000120000.079
NK38/30383848303800076000120000.116
NK40/20404050202650043000110000.082
NK40/30404050303750079000110000.125 
NK42/20424252202390045000100000.086
NK42/30424252302700049000100000.13
NK43/20434353202570075000100000.086
NK43/30434353303900075000100000.133 
NK45/2045455520198004650076500.095
NK45/3045455530410008800076500.14
NK47/2047475720285005600076500.095
NK47/3047475730430009400076500.145 
NK50/1447506414320007010081400.167
NK50/1547506515400006200081400.178
NK50/2747506727400016200181410.21
NK55/2555556825306006080076000.18
NK55/3055556830480006300076000.186 
NK55/3555556835550007400076000.25
NK60/2560607225390008600070000.186 
NK60/35606072355600013000070000.258
NK65/2565657825440009800070000.217
NK65/35656578355900014200070000.053
NK68/2565688225435008900070000.241
NK70/2570708525445009200065000.302
NK70/35707085356300014400065000.37
NK75/25757592255400010400060000.315
NK75/35757592357700016200060000.445
NK80/25758095256899812299854980.3
NK80/35758095356899912299954990.35
NK85/257585105256900012300055000.425
NK85/357585105359800019300055000.6
NK90/357590110301030002080050000.63
NK95/269595115267300013700048000.49
NK95/3695951153610700022300048000.68
NK100/30951001203010700122300148010.69
NK100/36951001203611100023700046000.715
NK105/2695105125267800015500040000.538
NK105/36951051253611400025000040000.71
NK110/309511013030980002100042000.647
NK110/4095110130401270002900042000.83
NK115/1295115140121560003700042000.85
NK115/1595115140151850004500042000.88
NK120/40120120140402140005300042000.91


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