Angular contact ball bearings, four-point contact ball bearings QJ 1056 N2MA/C4
Bearing number : QJ 1056 N2MA/C4
Size (mm) : 280x420x65
Brand : SKF
Bore Diameter (mm) : 280
Outer Diameter (mm) : 420
Width (mm) : 65
Bearing dimensions and specification in SKF catalogue:
d - 280 mm
D - 420 mm
B - 65 mm
d1 - - 328 mm
D1 - - 372 mm
a - 245 mm
h - 15 mm
b - 12.55 mm
r0 - 2.5 mm
r1,2 - min. - 4 mm
da - min. - 298 mm
Da - max. - 402 mm
ra - max. - 3 mm
Basic dynamic load rating - C - 585 kN
Basic static load rating - C0 - 1140 kN
Fatigue load limit - Pu - 25.5 kN
Reference speed - 1400 r/min
Limiting speed - 2400 r/min
Calculation factor - ka - 0.8
Calculation factor - e - 0.95
Calculation factor - X - 0.6
Calculation factor - Y0 - 0.58
Calculation factor - Y1 - 0.66
Calculation factor - Y2 - 1.07
Mass bearing - 33.5 kg
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