Angular contact ball bearings, super-precision 7008 CB/HCP4A
Bearing number : 7008 CB/HCP4A
Size (mm) : 40x68x15
Brand : SKF
Bore Diameter (mm) : 40
Outer Diameter (mm) : 68
Width (mm) : 15
Bearing dimensions and specification in SKF catalogue:
d - 40 mm
D - 68 mm
B - 15 mm
d1 - 50.95 mm
d2 - 49.87 mm
D2 - 58.88 mm
r1,2 - min. - 1 mm
r3,4 - min. - 0.6 mm
a - 14.8 mm
da - min. - 44.6 mm
db - min. - 44.6 mm
Da - max. - 63.4 mm
Db - max. - 64.8 mm
ra - max. - 1 mm
rb - max. - 0.6 mm
dn - 51.6 mm
Basic dynamic load rating - C - 7.4 kN
Basic static load rating - C0 - 5.6 kN
Fatigue load limit - Pu - 0.236 kN
Limiting speed for grease lubrication - 34000 r/min
Limiting speed for oil lubrication - 53000 mm/min
Ball - Dw - 4.762 mm
Ball - z - 26
Gref - 2.22 cm3
Calculation factor - f0 - 9.8
Preload class A - GA - 24 N
Preload class B - GB - 48 N
Preload class C - GC - 145 N
Calculation factor - f - 1.04
Calculation factor - f1 - 1
Calculation factor - f2A - 1
Calculation factor - f2B - 1.02
Calculation factor - f2C - 1.05
Calculation factor - fHC - 1.01
Preload class A - 30 N/micron
Preload class B - 40 N/micron
Preload class C - 63 N/micron
Mass bearing - 0.203 kg
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