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
KOYO MJ-14161 needle roller bearings	Standard Duty	6588 lb	Lubrication Fitting	076059
32 mm x 47 mm x 30 mm FBJ NKI 32/30 needle roller bearings	Cast Iron	Solid Pillow Block	10.4375 in	Concentric Collar
SKF RNA4910RS needle roller bearings	7.7	20mm	14mm	Plastic
70 mm x 110 mm x 38 mm Timken NA3070 needle roller bearings	4030 lbf	1-11/16 in	7420 lbf	Contact with Flinger
NTN ARXJ42X59X5.8 needle roller bearings	Steel	Expansion Bearing &#	2.7500 in	Round
40 mm x 62 mm x 23 mm NSK NA4908TT needle roller bearings	Skwezloc	Round	Cut Down Oil Soaked	Two-Bolt Base
NBS K 16x20x10 needle roller bearings	14000 r/min	28.6 kN	27 mm	37 mm
INA RNA6910-ZW needle roller bearings	1-1/2 in	CT-1000-K26, SAE841	Plain Sleeve	Sintered Bronze Oil-
INA HK5020 needle roller bearings	Standard	29mm	78	120mm
IKO TAF 212916 needle roller bearings	3-1/2 in	MUCTBL200RFCEW	3210 lbf	Set Screw
75 mm x 105 mm x 25 mm INA NKI75/25 needle roller bearings	3208a/c3-qbl	In Stock	0.02 KGS	Steel
IKO RNA 4876 needle roller bearings	Two Contact Seals	46193	19 mm	10 mm