Angular contact ball bearings, super-precision 71912 ACB/HCP4AL
Bearing number : 71912 ACB/HCP4AL
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 - 68.94 mm
d2 - 67.73 mm
D2 - 78.36 mm
b - 2 mm
C1 - 6.5 mm
C2 - 3.8 mm
C3 - 1.7 mm
r1,2 - min. - 1 mm
r3,4 - min. - 0.3 mm
a - 27.2 mm
da - min. - 64.6 mm
db - min. - 64.6 mm
Da - max. - 80.4 mm
Db - max. - 83 mm
ra - max. - 1 mm
rb - max. - 0.3 mm
dn - 69.8 mm
Basic dynamic load rating - C - 9.8 kN
Basic static load rating - C0 - 8.3 kN
Fatigue load limit - Pu - 0.355 kN
Limiting speed for grease lubrication - 22000 r/min
Limiting speed for oil lubrication - 36000 mm/min
Ball - Dw - 5.556 mm
Ball - z - 30
Gref - 2.77 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 - 57 N
Preload class B - GB - 115 N
Preload class C - GC - 340 N
Calculation factor - f - 1.11
Calculation factor - f1 - 0.99
Calculation factor - f2A - 1
Calculation factor - f2B - 1.02
Calculation factor - f2C - 1.08
Calculation factor - fHC - 1.01
Preload class A - 104 N/micron
Preload class B - 135 N/micron
Preload class C - 204 N/micron
Mass bearing - 0.182 kg
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