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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SKF USA Inc. Lansdale, Pennsylvania, PA 194
Company Description by SKF USA Inc. The SKF Group is the leading global supplier of products, customer solutions, and services in the business of rolling bearings and seals. The Group's main competencies include technical support, maintenance services, condition monitoring and training.
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