roulements à aiguilles

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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.[1] 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 feature a smaller cross-section, higher load-carrying capacity, greater rigidity, and lower inertia forces that facilitate size and weight reductions in machinery. They’re designed to withstand oscillation, perform under severe conditions, and interchange with sliding bearings.

 

Bearing Number Bore Dia Outer DIa Width Size
Timken K25X31X24F roulements à aiguilles 140x210x45 210 mm 34 mm 0,72
25 mm x 38 mm x 30 mm ISO NKI25/30 roulements à aiguilles 55 mm 21 mm 55x100x21 100 mm
NBS RNA 4910 2RS roulements à aiguilles 13 7911DF 1 mm 55 mm
KOYO K25X30X17H roulements à aiguilles 34 34x146.4x74.95 146,4 34 mm
KOYO R56/34 roulements à aiguilles Needle Roller Bearin 0.984 Inch | 25 Mill 25x38x20 31171512
55 mm x 80 mm x 25 mm KOYO NA4911 roulements à aiguilles 218 kN 3000 r/min 11.775 148.43
KOYO 28R3620 roulements à aiguilles 1,5 mm 384,175 mm 193,675 mm 384,175
NTN MR526832 roulements à aiguilles Round 8.8 kN 0,3 mm Open
NSK MFJLT-4018 roulements à aiguilles 16 mm 16 mm NJ206 CRAFT
INA BCE2010 roulements à aiguilles 120 77,788 123077X/123120 0,8 mm
Timken K37X42X13H roulements à aiguilles 16 0,022 Kg 12,7 kN 22MKM2816
IKO KT 222816 EG roulements à aiguilles 25,4 mm 25,4 139,7 mm 25,4 mm
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