Angular contact ball bearings, super-precision 7204 CD/P4A
Bearing number : 7204 CD/P4A
Size (mm) : 20x47x14
Brand : SKF
Bore Diameter (mm) : 20
Outer Diameter (mm) : 47
Width (mm) : 14
Bearing dimensions and specification in SKF catalogue:
d - 20 mm
D - 47 mm
B - 14 mm
d1 - 29.1 mm
d2 - 29.1 mm
D1 - 38.7 mm
r1,2 - min. - 1 mm
r3,4 - min. - 0.3 mm
a - 11.6 mm
da - min. - 25.6 mm
db - min. - 25.6 mm
Da - max. - 41.4 mm
Db - max. - 44.6 mm
ra - max. - 1 mm
rb - max. - 0.3 mm
dn - 31.1 mm
Basic dynamic load rating - C - 11.9 kN
Basic static load rating - C0 - 5.8 kN
Fatigue load limit - Pu - 0.245 kN
Limiting speed for grease lubrication - 36000 r/min
Limiting speed for oil lubrication - 53000 mm/min
Ball - Dw - 7.938 mm
Ball - z - 11
Gref - 1.539 cm3
Calculation factor - f0 - 8.7
Preload class A - GA - 45 N
Preload class B - GB - 90 N
Preload class C - GC - 180 N
Preload class D - GD - 360 N
Calculation factor - f - 1.03
Calculation factor - f1 - 1
Calculation factor - f2A - 1
Calculation factor - f2B - 1.01
Calculation factor - f2C - 1.03
Calculation factor - f2D - 1.05
Calculation factor - fHC - 1
Preload class A - 25 N/micron
Preload class B - 33 N/micron
Preload class C - 45 N/micron
Preload class D - 63 N/micron
Mass bearing - 0.104 kg
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