NKIA5911 Needle Roller/Angular Contact Ball Bearings 55×80×34mm

Model: NKIA5911
Place of Origin: Zhejiang,China (Mainland)
Brand Name: RNB OR NATURAL
Direction force: Single force
Type: Composite bearing
Material of race: Chrome steel
Material of Needle roller: Chrome steel
Precision: P6

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Product Description

Payment & Shipping Terms Supply Capacity
Trade Term:FOBProduction Capacity:50000 Piece/Pieces per...
Payment Terms:L/C, T/TPacking:RNB OR NATURAL
Min. Order:500 Bag/BagsDelivery Date:35days
Means of Transport:Ocean, Air

Needle Roller/Angular Contact Ball Bearings NKIA5911


  Demension: 55×80×34mm ,    Weight: 550g.

SHAPE LOCATION TOLERANCE SHOULD BE TO CURRENT STANDARD;

Combined needle roller bearings are singe directional positioning bearings or the positioning bearings with minimum radically sectional height.If the centripetal needle bearings are used with thrust ball bearings or cylindrical roller bearings in combination,the applicable range will be greatly expanded.These bearings are mainly used in transmission engineering and tooling machines such as the bearings in the main shaft of drill press,drill sleeve,positioning central shaft,worm,spanner teeth head and so on.

The dimensional tolerance and geometric precision are in compliance with DIN620 and the tolerance grade of P0 with normal radial gap Co.The only exception is NKIB series which have narrower inner aperture with bigger tolerance so that they can be used with the shaft with K5 tolerance in transit combination.

If the bearings combination of high precision,the listed bearings in compliance DIN620 P6 and P5 grades tolerance can be supplied.

RNB Combined Needle Roller Bearings consist of:

Needle Roller/Axial Deep Groove Ball Bearings,NX,NX…Z,NKX and NKX…Z Series

Needle Roller/Axial Cylindrical Roller Bearings,NKXR,NKXR…Z Series

Needle Roller/Angular Contact Ball Bearings,NKIA,NKIB Series

Needle Roller/Axial Deep Groove Ball Bearings

  Needle roller/axial deep groove ball bearings do not have an inner ring and are therefore particularly compact in a radial direction.However,they require a shaft raceway that is hardened and ground.

  Series NX and NX…Z have a full complement comprising a ball bearings component and end caps,Series NKX and NKX…Z have an axial bearings component comprising a ball and cage assembly with a sheet steel or plastic cage. NKX…Z also has an end cap on the axial bearings component.

   For lubrication, the outer ring has a lubricated groove and lubrication holes.NX and NKX series are lubricated with oil,but NX…Z and NKX…Z are lubricated with grease the end cap in NX has lubrication holes,but the end cap in NKX…Z do not have lubrication holes.

   If Needle roller/axial deep groove ball bearings are fitted oppositely,alternative axial loads can be sustained. It is suggested to pre-tighten the bearings without load,but with springs.In this way,the heat expansion can be compensated and the operational noise can be lowered. When the speed is greater than 0.2n 1 oil,the pre-tightening value should be 1% to 2% of the axial rated dynamic load.

2) Needle Roller/Axial Cylindrical Roller Bearings

   Needle roller/axial cylindrical roller bearings do not have an inner ring and are therefore particularly compact in a radial direction.However,they require a shaft raceway that is hardened and ground.

   Series NKXR and NKXR…Z have an axial bearings component comprising a roller and cage assembly with a plastic cage.NKXR…Z also has an end cap on the axial bearings component.

   For lubrication,the outer ring has a lubrication groove and lubrication holes.NKXR is lubricated with oil.NKXR…Z is intended for grease lubrication.The end cap does not have lubrication holes.

3)Needle Roller/Angular Contact Ball Bearings

Needle Roller/Angular Contact Ball Bearings NKIA5911

Combined bearings NKIA and NKIB have an inner ring

   Series NKIA corresponds to DIN5429-2.It can support axial loads from one direction.

   Series NKIB has one narrow inner ring and one wide inner ring.The axial bearings component has plastic ball cage,permissible operational temperature 120℃,150℃ for temporary use,180℃ for short time only. At the point where the inner rings join,there is a shoulder on both sides for guidance of the ball and cage assembly.As a result,these bearings are also suitable for supporting axial forces alternating in direction.The bearings guide the shaft with an axial clearance of 0.08mm to 0.25mm.

   NKIA and NKIB can be lubricated with grease or oil.For lubrication,the outer ring has a lubrication groove and lubrication hole.


Combined needle roller/angular contact ball bearings-NKIA, NKIB
BearingDimension (mm)Redial load (N)Limiting   speedMass
No.dFDBCrCorCaCoarpm(g)
NKIA 59011216241650476352201016202300040
NKIA 59021520281884009600214020702100050
NKIA 590317223018880010600234023702000056
NKIA 59042025372318000210003140390017000103
NKIA 59/222228392319500255003550420015000118
NKIA 59052530422320500270003600480014000130
NKIA 59063035472322500315004050540013000147
NKIA 59073542552728000460005700750011000243
NKIA 5908404862303900055050600089009000315
NKIA 5909 X4552683040500689006300105008500375
NKIA 5910 X5058723042500750006890118008000380
NKIA 59115563803450800960008050145007000550
NKIA 59126068853456400980009500158006500590
NKIA 5913 X65729034575001060009800170006500635
NKIA 59147080100407905015200011800225005500980
NKIB 59011216241676008300216019402300043
NKIB 5902152028181060013600234023702100052
NKIB 5903172230181100014600250027502000058
NKIB 59042025372321000255003950420017000107
NKIB 59/222228392322800295004250485015000122
NKIB 59052530422323600315004350520014000134
NKIB 59063035472325000355004750630013000151
NKIB 59073542552731500500006000840011000247
NKIB 59084048623043000670007400109009000320
NKIB 5909 X4552683045000730007700120008500380
NKIB 5910 X5058723047000800008100137008000385
NKIB 591155638034580001000009700166007000555
NKIB 5912606885346000010800010000179006500595
NKIB 5913 X657290346100011200010300193006500640
NKIB 59147080100408400015600013500250005500985


Needle Roller/Angular Contact Ball Bearings NKIA5911


Category: Drawn Cup Needle Roller Bearings

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