needle roller bearings

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
NTN ARXJ38X69X5.7 needle roller bearings	7272	360x650x95	360,000	650,000
SKF K14x18x15TN needle roller bearings	6800ZZ	10x19x5	10	19
12 mm x 24 mm x 22 mm NTN NA6901R needle roller bearings	898A/892CD+X4S-898	139.7x228.6x123.825	139,7	228,6
Toyana HK172314 needle roller bearings	68/800	800x980x82	800,000	980,000
30 mm x 62 mm x 30 mm KOYO NA3030 needle roller bearings	6800Z	10x19x5	10,000	19,000
INA K75X83X23 needle roller bearings	6410 ZZ	50x130x31	50	130
IKO KT 485420 needle roller bearings	6800LUZ	10x19x5	10,000	19,000
KOYO BHT88 needle roller bearings	634H	4x16x5	4	16
NTN K42×50×20 needle roller bearings	6804LLB	20x32x7	20	32
ISO K45x53x28 needle roller bearings	6708-2RS	40x50x6	40	50
INA K25X30X26-ZW needle roller bearings	6805-2RS C3	25x37x7	25	37
KOYO 38WR4451 needle roller bearings	6707ZZ	35x44x5	35	44