Angular contact ball bearings, super-precision 71905 CD/HCP4A
Bearing number : 71905 CD/HCP4A
Size (mm) : 25x42x9
Brand : SKF
Bore Diameter (mm) : 25
Outer Diameter (mm) : 42
Width (mm) : 9
Bearing dimensions and specification in SKF catalogue:
d - 25 mm
D - 42 mm
B - 9 mm
d1 - 30.6 mm
d2 - 30.6 mm
D1 - 36.4 mm
r1,2 - min. - 0.3 mm
r3,4 - min. - 0.2 mm
a - 9 mm
da - min. - 27 mm
db - min. - 27 mm
Da - max. - 40 mm
Db - max. - 40.6 mm
ra - max. - 0.3 mm
rb - max. - 0.2 mm
dn - 31.8 mm
Basic dynamic load rating - C - 6.8 kN
Basic static load rating - C0 - 4 kN
Fatigue load limit - Pu - 0.17 kN
Limiting speed for grease lubrication - 45000 r/min
Limiting speed for oil lubrication - 63000 mm/min
Ball - Dw - 4.762 mm
Ball - z - 18
Gref - 0.54 cm3
Calculation factor - f0 - 10.2
Preload class A - GA - 25 N
Preload class B - GB - 50 N
Preload class C - GC - 100 N
Preload class D - GD - 200 N
Calculation factor - f - 1.07
Calculation factor - f1 - 1
Calculation factor - f2A - 1
Calculation factor - f2B - 1.07
Calculation factor - f2C - 1.12
Calculation factor - f2D - 1.18
Calculation factor - fHC - 1.04
Preload class A - 27 N/micron
Preload class B - 36 N/micron
Preload class C - 49 N/micron
Preload class D - 69 N/micron
Mass bearing - 0.039 kg
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