Angular contact ball bearings, super-precision 71811 ACD/P4
Bearing number : 71811 ACD/P4
Size (mm) : 55x72x9
Brand : SKF
Bore Diameter (mm) : 55
Outer Diameter (mm) : 72
Width (mm) : 9
Bearing dimensions and specification in SKF catalogue:
d - 55 mm
D - 72 mm
B - 9 mm
d1 - 60.7 mm
d2 - 60.7 mm
D1 - 66.5 mm
r1,2 - min. - 0.3 mm
r3,4 - min. - 0.15 mm
a - 19.3 mm
da - min. - 57 mm
db - min. - 57 mm
Da - max. - 70 mm
Db - max. - 71.2 mm
ra - max. - 0.3 mm
rb - max. - 0.15 mm
dn - 61.3 mm
Basic dynamic load rating - C - 9.6 kN
Basic static load rating - C0 - 10.2 kN
Fatigue load limit - Pu - 0.43 kN
Limiting speed for grease lubrication - 16000 r/min
Limiting speed for oil lubrication - 24000 mm/min
Ball - Dw - 4.762 mm
Ball - z - 29
Gref - 0.88 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 - 87 N
Preload class B - GB - 260 N
Preload class C - GC - 520 N
Calculation factor - f - 1.27
Calculation factor - f1 - 0.97
Calculation factor - f2A - 1
Calculation factor - f2B - 1.08
Calculation factor - f2C - 1.15
Calculation factor - fHC - 1
Preload class A - 124 N/micron
Preload class B - 195 N/micron
Preload class C - 268 N/micron
Mass bearing - 0.081 kg
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