Needle roller bearings

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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
42 mm x 57 mm x 30 mm JNS NKI 42/30 needle roller bearings	6314N	70x150x35	70	150
KOYO FNTKF-1330 needle roller bearings	678A	8x12x2.5	8	12
KOYO TVK3553J-1 needle roller bearings	676AZZ	6x10x3	6	10
Toyana K165X173X35 needle roller bearings	68/900	900x1090x85	900,000	1090,000
NSK MFJL-2530 needle roller bearings	NJ313-E-MPA+HJ313-E	65x140x33	65	140
NBS KBK 10x14x10 needle roller bearings	6320ZZX	100x215x47	100	215
NSK FWF-162017 needle roller bearings	6322NR	110x240x50	110	240
ISO RNA5919 needle roller bearings	6413	65x160x37	65,000	160,000
KOYO K90X98X25F needle roller bearings	68/600	600x730x60	600	730
ISO K58x63x17 needle roller bearings	68/630	630x780x69	630	780
70 mm x 100 mm x 40 mm KOYO NA5914 needle roller bearings	22222 KW33	110x200x53	110	200
ISO K15x18x17 needle roller bearings	6800ZZ	10x19x5	10	19