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.

 

Timken K25X31X24F roulements à aiguilles

140x210x45 210 mm
34 mm 0,72

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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