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 HK2518LD needle roller bearings	2200 r/min	311 kN	217.488 mm	152.4 mm
20 mm x 28 mm x 23 mm ZEN RNA6902 needle roller bearings	.7190 in	1.3120 in	1470408000	Commercial
NSK FWF-252913 needle roller bearings	Round	Spherical Roller	Cast Iron	NOTICE: One exp
19.05 mm x 38,1 mm x 25,65 mm IKO BRI 122416 U needle roller bearings	Class 2	8865590335640	52100 Bearing Grade	1.1542 in
INA K22X28X17 needle roller bearings	4.1250 in	0.9375 in	Single Cup	Class 2
INA 722018810 needle roller bearings	C0	KD	Brass/Composite	6.5000 in
IKO TAM 815 needle roller bearings	Contact Seal	3.2500 in	Four-Bolt Flange	Set Screw
IKO YB 2,5 4 needle roller bearings	Chrome Steel	Lubrication Groove &	120 mm	Not Rated
INA RNA69/22-XL needle roller bearings	Plain Sleeve	3-1/2 in	SAE 660 (C932&#	750 fp/min
INA RNAO16X24X13 needle roller bearings	89 mm	12 mm	17 mm	51 mm
9 mm x 20 mm x 11 mm NTN NA499 needle roller bearings	2-11/16 in	Round	11789 lb	Four-Bolt Flange
IKO TLA 2016 UU needle roller bearings	0.20 KGS	Standard	11mm	Open Type