Needle roller bearings NA / RNA / HF / HJ / HK series

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Needle roller bearings

-Needle roller bearings contain many slender rollers with a length 3 to 10 times their diameter , As a result , the ratio of the bearings outside diameter to the inscribed circle diameter is small , and they have a rather high radial load capacity .

There are numrous types acailable , and many have no inner rings , The drawn-cup type has a pressed steel outer ring and the 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 .

Model	Dimention mm			Weight kg
Model	d	D	Width/Height	Weight kg
HFL3530	35	42	30	0.058
8E-NKI25x62x17	25	62	17
8E-NKI34X56X20	34	56	20
K22X26X17	22	26	17	0.012
bushing 25.3 3619 mm	25.3	36	19	0.1
HL-8Q-NK37X56X36-2	37	56	36	0.27
NA6906	30	47	30	0.2
AJ502601	25	38	30	0.12
RNA 4848	266	300	60	5.4
CFS-3V	3	6	5.5	0.002
BAM1812	28.575	34.925	19.05	0.033
NA4904	20	37	14	0.081
NKI40/20	40	55	20	0.12
K25X29X13	25	29	13
K15X19X10	15	19	10
K6X9X8	6	9	8
K5X8X8	5	8	5
NKI100/40	100	130	40
NKI15/20	15	27	20
HJ101812	15.875	28.575	19.05
HJ122012	19.05	31.75	19.05
HJ122016	19.05	31.75	25.4
HJ142212	22.225	34.925	19.05
HJ142216	22.225	34.925	25.4
HJ162412	25.4	38.1	19.05

Needle roller bearing

Feature :

As the roller thickness decreases, the volume can be reduced, and also can withstand large radial load.
No inner ring bearings shall be used as raceway surfaces with the correct precision and hardness.

Cage type :

Pressed steel cage
The synthetic resin forming holder.

Application :

Automobile engine, gearbox, pump, excavator crawler pulley, hoist, bridge crane, compressor .