Needle roller bearings

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A needle roller bearing is a special type of roller bearing which uses long, thin cylindrical rollers resembling needles. Ordinary roller bearings' rollers are only slightly longer than their diameter, but needle bearings typically have rollers that are at least four times longer than their diameter.Like all bearings, they are used to reduce the friction of a rotating surface.

Compared to ball bearings and ordinary roller bearings, needle bearings have a greater surface area in contact with the races, so they can support a greater load. They are also thinner, so they require less clearance between the axle and the surrounding structure.

Needle bearings are heavily used in automobile components such as rocker arm pivots, pumps, compressors, and transmissions. The drive shaft of a rear-wheel drive vehicle typically has at least eight needle bearings (four in each U joint) and often more if it is particularly long, or operates on steep slopes.

Bearing Number	Bore Dia	Outer DIa	Width	Size
45 mm x 62 mm x 20 mm KOYO NAO45X62X20 needle roller bearings	6315Z	75x160x37	75,000	160,000
Timken B-1610 needle roller bearings	6305LLUNR	25x62x17	25,000	62,000
ISO NK47/20 needle roller bearings	CSXU040-2RS	101.6x120.65x12.7	101,6	120,65
NSK NF-1416 needle roller bearings	6801-2NKE	12x21x5	12	21
KOYO AX 5 50 70 needle roller bearings	6703LLF	17x23x4	17	23
IKO KT 324525 needle roller bearings	6808-2RS	40x52x7	40	52
SKF BK2538 needle roller bearings	222K	8 in	22244K	1:12
Toyana K15x18x22 needle roller bearings	6800-2RS	10x19x5	10	19
85 mm x 115 mm x 30 mm IKO NAF 8511530 needle roller bearings	6802ZZ	15x24x5	15	24
IKO RNA 6902 needle roller bearings	6906Z	30x47x9	30	47
FBJ K80X86X20 needle roller bearings	6419	95x240x55	95	240
45 mm x 64 mm x 30,5 mm IKO TRI 456430 needle roller bearings	B37-10	37x88x18	37	88