Angular contact ball bearings, super-precision 71909 CE/P4AL
Bearing number : 71909 CE/P4AL
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 - 52.7 mm
d2 - 51 mm
D1 - 60.3 mm
b - 2 mm
C1 - 5.9 mm
C2 - 2.3 mm
C3 - 1.8 mm
r1,2 - min. - 0.6 mm
r3,4 - min. - 0.3 mm
a - 14 mm
da - min. - 48.2 mm
db - min. - 47 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 - 10.1 kN
Basic static load rating - C0 - 7 kN
Fatigue load limit - Pu - 0.29 kN
Limiting speed for grease lubrication - 29000 r/min
Limiting speed for oil lubrication - 44000 mm/min
Ball - Dw - 6.35 mm
Ball - z - 21
Gref - 1.5 cm3
Calculation factor - f0 - 8.4
Preload class A - GA - 55 N
Preload class B - GB - 166 N
Preload class C - GC - 331 N
Calculation factor - f - 1.09
Calculation factor - f1 - 1
Calculation factor - f2A - 1
Calculation factor - f2B - 1.04
Calculation factor - f2C - 1.08
Calculation factor - fHC - 1
Preload class A - 34 N/micron
Preload class B - 53 N/micron
Preload class C - 73 N/micron
Mass bearing - 0.13 kg
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