Angular contact ball bearings, super-precision 71912 ACE/P4AH1
Bearing number : 71912 ACE/P4AH1
Size (mm) : 60x85x13
Brand : SKF
Bore Diameter (mm) : 60
Outer Diameter (mm) : 85
Width (mm) : 13
Bearing dimensions and specification in SKF catalogue:
d - 60 mm
D - 85 mm
B - 13 mm
d1 - 67.75 mm
d2 - 65.7 mm
D1 - 77.3 mm
K - 0.5 mm
C1 - 3.83 mm
r1,2 - min. - 1 mm
r3,4 - min. - 0.3 mm
a - 24.6 mm
da - min. - 64.6 mm
db - min. - 62 mm
Da - max. - 80.4 mm
Db - max. - 83 mm
ra - max. - 1 mm
rb - max. - 0.3 mm
dn - 69.6 mm
Basic dynamic load rating - C - 15.3 kN
Basic static load rating - C0 - 11.2 kN
Fatigue load limit - Pu - 0.475 kN
Limiting speed for grease lubrication - 19500 r/min
Limiting speed for oil lubrication - 30000 mm/min
Ball - Dw - 7.938 mm
Ball - z - 23
Gref - 2.5 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 - 139 N
Preload class B - GB - 418 N
Preload class C - GC - 836 N
Calculation factor - f - 1.13
Calculation factor - f1 - 0.99
Calculation factor - f2A - 1
Calculation factor - f2B - 1.04
Calculation factor - f2C - 1.07
Calculation factor - fHC - 1
Preload class A - 115 N/micron
Preload class B - 173 N/micron
Preload class C - 228 N/micron
Mass bearing - 0.19 kg
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