Angular contact ball bearings, super-precision 71940 ACD/P4A
Bearing number : 71940 ACD/P4A
Size (mm) : 200x280x38
Brand : SKF
Bore Diameter (mm) : 200
Outer Diameter (mm) : 280
Width (mm) : 38
Bearing dimensions and specification in SKF catalogue:
d - 200 mm
D - 280 mm
B - 38 mm
d1 - 224.7 mm
d2 - 224.7 mm
D1 - 255.3 mm
r1,2 - min. - 2.1 mm
r3,4 - min. - 1 mm
a - 75.2 mm
da - min. - 209 mm
db - min. - 209 mm
Da - max. - 271 mm
Db - max. - 275 mm
ra - max. - 2 mm
rb - max. - 1 mm
dn - 231.4 mm
Basic dynamic load rating - C - 199 kN
Basic static load rating - C0 - 250 kN
Fatigue load limit - Pu - 6.8 kN
Limiting speed for grease lubrication - 4300 r/min
Limiting speed for oil lubrication - 6300 mm/min
Ball - Dw - 25.4 mm
Ball - z - 26
Gref - 81 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 - 1250 N
Preload class B - GB - 2500 N
Preload class C - GC - 5000 N
Preload class D - GD - 10000 N
Calculation factor - f - 1.23
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 - 484 N/micron
Preload class B - 635 N/micron
Preload class C - 845 N/micron
Preload class D - 1148 N/micron
Mass bearing - 6.1 kg
Angular contact ball bearings, super-precision - 71940 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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