SKF NJ256MA bearing

280x500x80

Order what l thought was a set of SKF bearings for my R100GS gearbox (was advertised as SKF) from a german company but have been sent a set of FAG bearings all look the same apart from the the bearing that sits behind the circlip groove on the output shaft (need to have one machined on mine) the old NTN bearing has 5 roller balls and the new FAG 6 smaller ones .



Cylindrical roller bearings NJ256MA

Bearing number : NJ256MA

Size (mm) : 280x500x80

Brand : SKF

Bore Diameter (mm) : 280

Outer Diameter (mm) : 500

Width (mm) : 80

Bearing dimensions and specification in SKF catalogue:

d - 280 mm

D - 500 mm

B - 80 mm

C - 80 mm

d1 - 360 mm

r1 min. - 5 mm

r2 min. - 5 mm

r3 min. - 5 mm

r4 min. - 5 mm

D1 - 417 mm

F - 340 mm

da min. - 300 mm

da max - 333 mm

Da max. - 480 mm

db min - 364 mm

ra max. - 4 mm

rb max. - 4 mm

S - 3,8 mm

Weight - 73 Kg

Basic dynamic load rating (C) - 1140 kN

Basic static load rating (C0) - 1700 kN

Fatigue load limit (Pu) - 153

Reference speed - 1400 r/min

Limiting speed - 1900 r/min

Calculation factor (kr) - 0,15

Bearing NJ256MA

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