Angular contact ball bearings, super-precision S7004 ACE/P4A
Bearing number : S7004 ACE/P4A
Size (mm) : 20x42x12
Brand : SKF
Bore Diameter (mm) : 20
Outer Diameter (mm) : 42
Width (mm) : 12
Bearing dimensions and specification in SKF catalogue:
d - 20 mm
D - 42 mm
B - 12 mm
d1 - 26.6 mm
d2 - 24.8 mm
D2 - 36.5 mm
r1,2 - min. - 0.6 mm
r3,4 - min. - 0.3 mm
a - 13.2 mm
da - min. - 22 mm
da - max. - 26.2 mm
db - min. - 22 mm
db - max. - 24.4 mm
Da - max. - 40 mm
Db - max. - 39.6 mm
ra - max. - 0.6 mm
rb - max. - 0.3 mm
Basic dynamic load rating - C - 7.2 kN
Basic static load rating - C0 - 3.2 kN
Fatigue load limit - Pu - 0.137 kN
Limiting speed for grease lubrication - 48000 r/min
Ball - Dw - 6.35 mm
Ball - z - 12
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 - 64 N
Preload class B - GB - 193 N
Preload class C - GC - 390 N
Calculation factor - f - 1.04
Calculation factor - f1 - 0.99
Calculation factor - f2A - 1
Calculation factor - f2B - 1.03
Calculation factor - f2C - 1.06
Calculation factor - fHC - 1
Preload class A - 52 N/micron
Preload class B - 78 N/micron
Preload class C - 102 N/micron
Mass bearing - 0.067 kg
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