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
Bearing Services - bearings-services.c
Horton Bearing Services is one of the largest professional stockists, distributors and retailers of bearings and seals in South East Asia and the Far East. It primarily caters to the NSK TIMKEN FAG SKF Wholesale; Maintenance, Repair, and Overhaul (MRO); and Original Equipment Manufacturers (OEM) markets.
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