Angular contact ball bearings, super-precision 71920 ACE/HCP4AH1
Bearing number : 71920 ACE/HCP4AH1
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 - 112.4 mm
d2 - 109 mm
D1 - 127.51 mm
K - 0.5 mm
C1 - 6.05 mm
r1,2 - min. - 1.1 mm
r3,4 - min. - 0.6 mm
a - 39.2 mm
da - min. - 106 mm
db - min. - 103.2 mm
Da - max. - 134 mm
Db - max. - 136.8 mm
ra - max. - 1 mm
rb - max. - 0.6 mm
dn - 115.4 mm
Basic dynamic load rating - C - 36.4 kN
Basic static load rating - C0 - 30 kN
Fatigue load limit - Pu - 1.1 kN
Limiting speed for grease lubrication - 13700 r/min
Limiting speed for oil lubrication - 22000 mm/min
Ball - Dw - 12.7 mm
Ball - z - 24
Gref - 10 cm3
Calculation factor - e - 0.68
Calculation factor - Y2 - 0.87
Calculation factor - Y0 - 0.38
Calculation factor - X2 - 0.41
Calculation factor - Y1 - 0.92
Calculation factor - Y2 - 1.41
Calculation factor - Y0 - 0.76
Calculation factor - X2 - 0.67
Preload class A - GA - 332 N
Preload class B - GB - 996 N
Preload class C - GC - 1990 N
Calculation factor - f - 1.18
Calculation factor - f1 - 0.98
Calculation factor - f2A - 1
Calculation factor - f2B - 1.04
Calculation factor - f2C - 1.08
Calculation factor - fHC - 1.01
Preload class A - 207 N/micron
Preload class B - 311 N/micron
Preload class C - 408 N/micron
Mass bearing - 0.649 kg
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