Angular contact ball bearings, super-precision S71908 ACE/P4A
Bearing number : S71908 ACE/P4A
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 - 46.5 mm
d2 - 44.8 mm
D2 - 56.5 mm
r1,2 - min. - 0.6 mm
r3,4 - min. - 0.3 mm
a - 18.6 mm
da - min. - 43.2 mm
da - max. - 46.1 mm
db - min. - 42 mm
db - max. - 44.4 mm
Da - max. - 58.8 mm
Db - max. - 60 mm
ra - max. - 0.6 mm
rb - max. - 0.3 mm
Basic dynamic load rating - C - 9.2 kN
Basic static load rating - C0 - 5.8 kN
Fatigue load limit - Pu - 0.245 kN
Limiting speed for grease lubrication - 28000 r/min
Ball - Dw - 6.35 mm
Ball - z - 19
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 - 84 N
Preload class B - GB - 250 N
Preload class C - GC - 505 N
Calculation factor - f - 1.05
Calculation factor - f1 - 0.99
Calculation factor - f2A - 1
Calculation factor - f2B - 1.04
Calculation factor - f2C - 1.07
Calculation factor - fHC - 1
Preload class A - 78 N/micron
Preload class B - 117 N/micron
Preload class C - 153 N/micron
Mass bearing - 0.108 kg
SKF History - skf.c
Agents appointed in Finland, Switzerland, Belgium, Denmark, Austria and Australia. 1909 Subsidiary formed in New York - SKF Ball Bearing Co. A small workshop opened in Paris. Agents appointed in Italy, Argentina and Japan. 1910 Skefko Ball Bearing Co. Ltd in the UK registered. Work started on a plant in Luton.
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