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
Timken AX 30 47 needle roller bearings	6800-2RU	10x19x5	10	19
KOYO RNAO45X62X40 needle roller bearings	AB12323S03	25x62.02x17.5	25	62,02
40 mm x 62 mm x 41 mm IKO NA 6908U needle roller bearings	637ZZ	7x26x9	7	26
ISO RNA6917 needle roller bearings	NJ 313 ECJ	140x65x33	140	65
NTN BF5032/1000 needle roller bearings	6907LU/34	34x55x10	34,000	55,000
KOYO B2620 needle roller bearings	6326ZZX	130x280x58	130	280
6 mm x 17 mm x 10 mm NBS NAO 6x17x10 TN needle roller bearings	6801	12x21x5	12	21
KOYO 45V5326P needle roller bearings	NJ244-E-M1	220x400x65	220	400
Toyana K17x21x10 needle roller bearings	NJ1012	60x95x18	60	95
ISO NK38/30 needle roller bearings	950.00 mm	387 mm	57 mm	G1/4
NSK NSA04204 needle roller bearings	6800LUZ	10x19x5	10,000	19,000
FBJ NK26/16 needle roller bearings	C3	85 mm	Snap Ring	1.80 Kg