Angular contact ball bearings, super-precision 71920 CD/P4A
Bearing number : 71920 CD/P4A
Size (mm) : 100x140x20
Brand : SKF
Bore Diameter (mm) : 100
Outer Diameter (mm) : 140
Width (mm) : 20
Bearing dimensions and specification in SKF catalogue:
d - 100 mm
D - 140 mm
B - 20 mm
d1 - 112.3 mm
d2 - 112.3 mm
D1 - 127.7 mm
r1,2 - min. - 1.1 mm
r3,4 - min. - 0.6 mm
a - 26.1 mm
da - min. - 106 mm
db - min. - 106 mm
Da - max. - 134 mm
Db - max. - 136 mm
ra - max. - 1 mm
rb - max. - 0.6 mm
dn - 115.6 mm
Basic dynamic load rating - C - 60.5 kN
Basic static load rating - C0 - 65.5 kN
Fatigue load limit - Pu - 2.6 kN
Limiting speed for grease lubrication - 8500 r/min
Limiting speed for oil lubrication - 14000 mm/min
Ball - Dw - 12.7 mm
Ball - z - 26
Gref - 10.5 cm3
Calculation factor - f0 - 16.3
Preload class A - GA - 230 N
Preload class B - GB - 460 N
Preload class C - GC - 920 N
Preload class D - GD - 1840 N
Calculation factor - f - 1.23
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 - 107 N/micron
Preload class B - 147 N/micron
Preload class C - 209 N/micron
Preload class D - 306 N/micron
Mass bearing - 0.8 kg
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