Angular contact ball bearings, super-precision 71903 ACE/P4A
Bearing number : 71903 ACE/P4A
Size (mm) : 17x30x7
Brand : SKF
Bore Diameter (mm) : 17
Outer Diameter (mm) : 30
Width (mm) : 7
Bearing dimensions and specification in SKF catalogue:
d - 17 mm
D - 30 mm
B - 7 mm
d1 - 21.1 mm
d2 - 20.1 mm
D1 - 25.9 mm
r1,2 - min. - 0.3 mm
r3,4 - min. - 0.15 mm
a - 9.6 mm
da - min. - 19 mm
db - min. - 19 mm
Da - max. - 28 mm
Db - max. - 29.2 mm
ra - max. - 0.3 mm
rb - max. - 0.15 mm
dn - 22 mm
Basic dynamic load rating - C - 3.2 kN
Basic static load rating - C0 - 1.5 kN
Fatigue load limit - Pu - 0.063 kN
Limiting speed for grease lubrication - 63000 r/min
Limiting speed for oil lubrication - 95000 mm/min
Ball - Dw - 3.969 mm
Ball - z - 13
Gref - 0.2 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 - 29 N
Preload class B - GB - 87 N
Preload class C - GC - 175 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 - 35 N/micron
Preload class B - 55 N/micron
Preload class C - 71 N/micron
Mass bearing - 0.016 kg
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