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
FBJ K22X29X16 needle roller bearings	N3244	220x400x144	220	400
IKO TAMW 6045 needle roller bearings	68/600	600x730x60	600	730
KOYO AXK120155 needle roller bearings	63801 ZZ	12x21x7	12	21
NTN GK42X47X21.8 needle roller bearings	68/850	850x1030x82	850	1030
Toyana HK162109 needle roller bearings	6807	35x47x7	35	47
NSK RLM506220 needle roller bearings	672HZZ	2x4x2	2	4
KOYO J-1212 needle roller bearings	6317	85x180x41	85	180
NSK FWF-121610 needle roller bearings	674A	4x7x2	4	7
NSK JH-98 needle roller bearings	FWF-141813	14	18	14 mm
KOYO K50X57X18FH needle roller bearings	NJ3332	160x340x136	160	340
Timken WJ-121616 needle roller bearings	676A	6x10x2.5	6	10
82,55 mm x 120,65 mm x 51,05 mm NTN MR607632+MI-526032 needle roller bearings	6704	20x27x4	20	27