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Bearing 71811 CD/P4 (SKF)
Angular contact ball bearings, super-precision 71811 CD/P4
Bearing number : 71811 CD/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 - 13 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 - 10.1 kN
Basic static load rating - C0 - 10.8 kN
Fatigue load limit - Pu - 0.455 kN
Limiting speed for grease lubrication - 18000 r/min
Limiting speed for oil lubrication - 28000 mm/min
Ball - Dw - 4.762 mm
Ball - z - 29
Gref - 0.88 cm3
Calculation factor - f0 - 17.1
Preload class A - GA - 55 N
Preload class B - GB - 165 N
Preload class C - GC - 330 N
Calculation factor - f - 1.27
Calculation factor - f1 - 1
Calculation factor - f2A - 1
Calculation factor - f2B - 1.09
Calculation factor - f2C - 1.16
Calculation factor - fHC - 1
Preload class A - 53 N/micron
Preload class B - 91 N/micron
Preload class C - 135 N/micron
Mass bearing - 0.081 kg
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