Angular contact ball bearings, super-precision 71908 ACB/HCP4AL
Bearing number : 71908 ACB/HCP4AL
Size (mm) : 40x62x12
Brand : SKF
Bore Diameter (mm) : 40
Outer Diameter (mm) : 62
Width (mm) : 12
Bearing dimensions and specification in SKF catalogue:
d - 40 mm
D - 62 mm
B - 12 mm
d1 - 48.46 mm
d2 - 47.6 mm
D2 - 55.64 mm
b - 2 mm
C1 - 5.9 mm
C2 - 2.8 mm
C3 - 1.7 mm
r1,2 - min. - 0.6 mm
r3,4 - min. - 0.3 mm
a - 20.2 mm
da - min. - 43.2 mm
db - min. - 43.2 mm
Da - max. - 58.8 mm
Db - max. - 60 mm
ra - max. - 0.6 mm
rb - max. - 0.3 mm
dn - 49.1 mm
Basic dynamic load rating - C - 5.1 kN
Basic static load rating - C0 - 4 kN
Fatigue load limit - Pu - 0.166 kN
Limiting speed for grease lubrication - 32000 r/min
Limiting speed for oil lubrication - 50000 mm/min
Ball - Dw - 3.969 mm
Ball - z - 28
Gref - 1.38 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 - 31 N
Preload class B - GB - 62 N
Preload class C - GC - 185 N
Calculation factor - f - 1.06
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 - 73 N/micron
Preload class B - 92 N/micron
Preload class C - 138 N/micron
Mass bearing - 0.114 kg
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