SKF 6311/HC5C3 bearing

55x120x29

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.



Hybrid deep groove ball bearings, single row 6311/HC5C3

Bearing number : 6311/HC5C3

Size (mm) : 55x120x29

Brand : SKF

Bore Diameter (mm) : 55

Outer Diameter (mm) : 120

Width (mm) : 29

Bearing dimensions and specification in SKF catalogue:

d - 55 mm

D - 120 mm

B - 29 mm

d1 - - 75.34 mm

D2 - - 104 mm

da - min. - 66 mm

Da - max. - 109 mm

ra - max. - 2 mm

Basic dynamic load rating - C - 74.1 kN

Basic static load rating - C0 - 45 kN

Fatigue load limit - Pu - 1.9 kN

Reference speed - 17000 r/min

Limiting speed - 9000 r/min

Calculation factor - f0 - 13.1

Mass bearing - 1.373 kg

Bearing 6311/HC5C3 Bearing 6311/HC5C3

Bearings similar to SKF 6311/HC5C3 bearing