Angular contact ball bearings, super-precision 71909 CB/HCP4A
Bearing number : 71909 CB/HCP4A
Size (mm) : 45x68x12
Brand : SKF
Bore Diameter (mm) : 45
Outer Diameter (mm) : 68
Width (mm) : 12
Bearing dimensions and specification in SKF catalogue:
d - 45 mm
D - 68 mm
B - 12 mm
d1 - 53.45 mm
d2 - 52.4 mm
D2 - 61.8 mm
r1,2 - min. - 0.6 mm
r3,4 - min. - 0.3 mm
a - 16.1 mm
da - min. - 48.2 mm
db - min. - 48.2 mm
Da - max. - 64.8 mm
Db - max. - 66 mm
ra - max. - 0.6 mm
rb - max. - 0.3 mm
dn - 54.2 mm
Basic dynamic load rating - C - 7.4 kN
Basic static load rating - C0 - 5.7 kN
Fatigue load limit - Pu - 0.245 kN
Limiting speed for grease lubrication - 32000 r/min
Limiting speed for oil lubrication - 50000 mm/min
Ball - Dw - 4.762 mm
Ball - z - 27
Gref - 1.75 cm3
Calculation factor - f0 - 9.7
Preload class A - GA - 24 N
Preload class B - GB - 48 N
Preload class C - GC - 145 N
Calculation factor - f - 1.08
Calculation factor - f1 - 1
Calculation factor - f2A - 1
Calculation factor - f2B - 1.03
Calculation factor - f2C - 1.08
Calculation factor - fHC - 1.01
Preload class A - 32 N/micron
Preload class B - 41 N/micron
Preload class C - 66 N/micron
Mass bearing - 0.125 kg
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SKF 71909CB/HCP4A bearing. SKF 71909CB/HCP4A, Size: SKF 71909CB/HCP4A bearing, Size: 45x68x12. SKF 71909CB/HCP4A are used in a wide variety of applications, they are simple in design, suitable for high speeds and are robust in operation, and need little maintenance.
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