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 TV4562 needle roller bearings	230/850EK	850x1220x272	850	1220
FBJ HK0910 needle roller bearings	6802-2RS C3	15x24x5	15	24
Timken NK60/25 needle roller bearings	6708ZZ	40x50x6	40	50
55 mm x 80 mm x 45 mm ISO NA6911 needle roller bearings	BB1-1618 TN9	35x72x25	35	72
NTN RNA4911R needle roller bearings	68/670	670x820x69	670,000	820,000
92,075 mm x 133,35 mm x 51,05 mm NTN MR688432+MI-586832 needle roller bearings	68/600	600x730x60	600	730
NTN K60X66X19 needle roller bearings	98203	17x40x9	17	40
75 mm x 105 mm x 32 mm KOYO NKJS75 needle roller bearings	68/750	750x920x78	750	920
KOYO K38X50X25 needle roller bearings	NNCL4952-V	260x331.5x100	260	331,5
60 mm x 82 mm x 35 mm INA NKI60/35 needle roller bearings	NJG 2309 VH	100x45x36	100	45
KOYO BTM2516 needle roller bearings	6302/HR22Q2	42x15x13	42	15
KOYO K12X18X12H needle roller bearings	6405	25x80x21	25	80