SKF NRT120B bearing

120x210x40

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 .



Axial-radial cylindrical roller bearings, super-precision NRT 120 B

Bearing number : NRT 120 B

Size (mm) : 120x210x40

Brand : SKF

Bore Diameter (mm) : 120

Outer Diameter (mm) : 210

Width (mm) : 40

Bearing dimensions and specification in SKF catalogue:

d - 120 mm

D - 210 mm

H - 40 mm

d1 - 184 mm

C - 12 mm

H1 - 26 mm

J - 135 mm

J1 - 195 mm

H - 7 mm

N1 - 11 mm

N2 - 7 mm

a - 6.2 mm

r1 - min. - 0.6 mm

r2 - min. - 0.3 mm

Basic dynamic load rating, radial direction - C - 64.4 kN

Basic static load rating, radial direction - C0 - 140 kN

Basic dynamic load rating, axial direction - C - 72 kN

Basic static load rating, axial direction - C0 - 450 kN

Limiting speed for grease lubrication - 230 r/min

Limiting speed for oil lubrication - 460 mm/min

Axial Preload - 2 N

Axial unloading force - 4.4 kN

Frictional moment - CRL - 6 N·m

axial stiffness - 8.5 N/micron

radial stiffness - 4.5 N/micron

Moment stiffness - 23000 kN·m/mrad

Mass bearing - 4.8 kg

Guideline diameter - 315 mm

Size - G - M8

Number of bolts - 3

Angle between bolts - 120 °

Size bolts - M6

Pitch - &alfa; - 15 °

Number of bolts - 21

Number of bolts omitted at removal thread position - 3, 120° apart

Size bolts - M6

Pitch - &alfa; - 15 °

Number of bolts - 22

Number of bolts omitted at retaining bolts position - 2, 180° apart

Tightening torque - 14 N·m

Size - M6

Number of bolts - 2

Bearing NRT 120 B Bearing NRT 120 B

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