Angular contact ball bearings, super-precision 71956 CD/P4A
Bearing number : 71956 CD/P4A
Size (mm) : 280x380x46
Brand : SKF
Bore Diameter (mm) : 280
Outer Diameter (mm) : 380
Width (mm) : 46
Bearing dimensions and specification in SKF catalogue:
d - 280 mm
D - 380 mm
B - 46 mm
d1 - 311.8 mm
d2 - 311.8 mm
D1 - 348.2 mm
r1,2 - min. - 2.1 mm
r3,4 - min. - 1.1 mm
a - 67.4 mm
da - min. - 291 mm
db - min. - 291 mm
Da - max. - 369 mm
Db - max. - 374 mm
ra - max. - 2 mm
rb - max. - 1 mm
dn - 319.7 mm
Basic dynamic load rating - C - 291 kN
Basic static load rating - C0 - 455 kN
Fatigue load limit - Pu - 10.6 kN
Limiting speed for grease lubrication - 3200 r/min
Limiting speed for oil lubrication - 4800 mm/min
Ball - Dw - 30.162 mm
Ball - z - 31
Gref - 159 cm3
Calculation factor - f0 - 16.7
Preload class A - GA - 1090 N
Preload class B - GB - 2180 N
Preload class C - GC - 4360 N
Preload class D - GD - 8720 N
Calculation factor - f - 1.27
Calculation factor - f1 - 1
Calculation factor - f2A - 1
Calculation factor - f2B - 1.04
Calculation factor - f2C - 1.09
Calculation factor - f2D - 1.15
Calculation factor - fHC - 1
Preload class A - 266 N/micron
Preload class B - 363 N/micron
Preload class C - 509 N/micron
Preload class D - 741 N/micron
Mass bearing - 12.9 kg
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