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
45 mm x 72 mm x 40 mm IKO NAFW 457240 needle roller bearings	6412	60x150x35	60	150
KOYO 16MKM2216 needle roller bearings	6800-2RU	10x19x5	10	19
SKF K7x9x7TN needle roller bearings	7404 BDF	20x72x38	20	72
NTN ARX30X58X20 needle roller bearings	6418	90x225x54	90,000	225,000
NSK FJLT-4018 needle roller bearings	D/W RW188-2Z	12.7x6.35x5.558	12,7	6,35
NSK RNAF354716 needle roller bearings	67/2,5ZZA	2.5x5x2.3	2,5	5
NTN DCL1310 needle roller bearings	683H-TT	3x7x3	3	7
FBJ NKS16 needle roller bearings	68/850/1080	850x1080x82	850,000	1080,000
NSK M-15161 needle roller bearings	FL685ZZ	5x12.5x5	5	12,5
NTN PK25X35X17.4 needle roller bearings	6800ZZ	10x19x5	10	19
INA RNA4876 needle roller bearings	6944LLU	220x300x38	220,000	300,000
Toyana HK0608 needle roller bearings	6315-RSR	75x160x37	75	160