Angular contact ball bearings, super-precision 71905 ACD/P4A
Bearing number : 71905 ACD/P4A
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 - 12.4 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 - 6.4 kN
Basic static load rating - C0 - 3.8 kN
Fatigue load limit - Pu - 0.16 kN
Limiting speed for grease lubrication - 32000 r/min
Limiting speed for oil lubrication - 48000 mm/min
Ball - Dw - 4.762 mm
Ball - z - 18
Gref - 0.54 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 - 40 N
Preload class B - GB - 80 N
Preload class C - GC - 160 N
Preload class D - GD - 320 N
Calculation factor - f - 1.07
Calculation factor - f1 - 0.98
Calculation factor - f2A - 1
Calculation factor - f2B - 1.04
Calculation factor - f2C - 1.08
Calculation factor - f2D - 1.14
Calculation factor - fHC - 1
Preload class A - 60 N/micron
Preload class B - 78 N/micron
Preload class C - 101 N/micron
Preload class D - 134 N/micron
Mass bearing - 0.042 kg
Angular contact ball bearings, super-precision - 71905 A
In addition to the information provided on this page, consider what is provided under Angular contact ball bearings.; For information on selecting the appropriate bearing for a given application, and interpreting the data on this page, refer to Principles of bearing selection and application.
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