Angular contact ball bearings, super-precision 71908 CB/P4AL
Bearing number : 71908 CB/P4AL
Size (mm) : 40x62x12
Brand : SKF
Bore Diameter (mm) : 40
Outer Diameter (mm) : 62
Width (mm) : 12
Bearing dimensions and specification in SKF catalogue:
d - 40 mm
D - 62 mm
B - 12 mm
d1 - 48.46 mm
d2 - 47.6 mm
D2 - 55.64 mm
b - 2 mm
C1 - 5.9 mm
C2 - 2.8 mm
C3 - 1.7 mm
r1,2 - min. - 0.6 mm
r3,4 - min. - 0.3 mm
a - 14.8 mm
da - min. - 43.2 mm
db - min. - 43.2 mm
Da - max. - 58.8 mm
Db - max. - 60 mm
ra - max. - 0.6 mm
rb - max. - 0.3 mm
dn - 49.1 mm
Basic dynamic load rating - C - 5.4 kN
Basic static load rating - C0 - 4.2 kN
Fatigue load limit - Pu - 0.176 kN
Limiting speed for grease lubrication - 30000 r/min
Limiting speed for oil lubrication - 45000 mm/min
Ball - Dw - 3.969 mm
Ball - z - 28
Gref - 1.38 cm3
Calculation factor - f0 - 9.8
Preload class A - GA - 18 N
Preload class B - GB - 36 N
Preload class C - GC - 110 N
Calculation factor - f - 1.06
Calculation factor - f1 - 1
Calculation factor - f2A - 1
Calculation factor - f2B - 1.02
Calculation factor - f2C - 1.07
Calculation factor - fHC - 1
Preload class A - 25 N/micron
Preload class B - 32 N/micron
Preload class C - 52 N/micron
Mass bearing - 0.118 kg
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