SKF NRT460A bearing

460x600x70

the suspect bearing and sent it to SKF for a rigorous bearing failure analysis. SKF confirmed that the bearing was counter-feit, which nearly caused the “repairs” to be worse than the original problem.



Axial-radial cylindrical roller bearings, super-precision NRT 460 A

Bearing number : NRT 460 A

Size (mm) : 460x600x70

Brand : SKF

Bore Diameter (mm) : 460

Outer Diameter (mm) : 600

Width (mm) : 70

Bearing dimensions and specification in SKF catalogue:

d - 460 mm

D - 600 mm

H - 70 mm

d1 - 560 mm

C - 22 mm

H1 - 46 mm

J - 482 mm

J1 - 580 mm

H - 9.3 mm

N1 - 15 mm

N2 - 9.3 mm

a - 8.2 mm

r1 - min. - 1 mm

r2 - min. - 1 mm

Basic dynamic load rating, radial direction - C - 201 kN

Basic static load rating, radial direction - C0 - 765 kN

Basic dynamic load rating, axial direction - C - 180 kN

Basic static load rating, axial direction - C0 - 2240 kN

Limiting speed for grease lubrication - 80 r/min

Limiting speed for oil lubrication - 160 mm/min

Axial Preload - 16 N

Axial unloading force - 34 kN

Frictional moment - CRL - 70 N·m

axial stiffness - 38.5 N/micron

radial stiffness - 12.1 N/micron

Moment stiffness - 1036000 kN·m/mrad

Mass bearing - 45 kg

Guideline diameter - 1000 mm

Size - G - M12

Number of bolts - 3

Angle between bolts - 120 °

Size bolts - M8

Pitch - &alfa; - 7.5 °

Number of bolts - 45

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

Size bolts - M8

Pitch - &alfa; - 7.5 °

Number of bolts - 46

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

Tightening torque - 34 N·m

Size - M8

Number of bolts - 2

Bearing NRT 460 A Bearing NRT 460 A

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