Angular contact ball bearings, super-precision 71906 ACE/P4AL
Bearing number : 71906 ACE/P4AL
Size (mm) : 30x47x9
Brand : SKF
Bore Diameter (mm) : 30
Outer Diameter (mm) : 47
Width (mm) : 9
Bearing dimensions and specification in SKF catalogue:
d - 30 mm
D - 47 mm
B - 9 mm
d1 - 35.8 mm
d2 - 34.4 mm
D1 - 41.39 mm
b - 1.5 mm
C1 - 4.6 mm
C2 - 1.4 mm
C3 - 0.9 mm
r1,2 - min. - 0.3 mm
r3,4 - min. - 0.15 mm
a - 14.3 mm
da - min. - 32 mm
db - min. - 32 mm
Da - max. - 45 mm
Db - max. - 46.2 mm
ra - max. - 0.3 mm
rb - max. - 0.15 mm
dn - 36.8 mm
Basic dynamic load rating - C - 5.3 kN
Basic static load rating - C0 - 3.1 kN
Fatigue load limit - Pu - 0.132 kN
Limiting speed for grease lubrication - 37000 r/min
Limiting speed for oil lubrication - 58000 mm/min
Ball - Dw - 4.762 mm
Ball - z - 18
Gref - 0.6 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 - 48 N
Preload class B - GB - 145 N
Preload class C - GC - 290 N
Calculation factor - f - 1.08
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 - 55 N/micron
Preload class B - 85 N/micron
Preload class C - 111 N/micron
Mass bearing - 0.05 kg
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