Angular contact ball bearings, super-precision 71911 CD/HCP4AL
Bearing number : 71911 CD/HCP4AL
Size (mm) : 55x80x13
Brand : SKF
Bore Diameter (mm) : 55
Outer Diameter (mm) : 80
Width (mm) : 13
Bearing dimensions and specification in SKF catalogue:
d - 55 mm
D - 80 mm
B - 13 mm
d1 - 62.7 mm
d2 - 62.7 mm
D1 - 72.3 mm
b - 2.2 mm
C1 - 6.5 mm
C2 - 3.2 mm
C3 - 2 mm
r1,2 - min. - 1 mm
r3,4 - min. - 0.3 mm
a - 15.6 mm
da - min. - 59.6 mm
db - min. - 59.6 mm
Da - max. - 75.4 mm
Db - max. - 78 mm
ra - max. - 1 mm
rb - max. - 0.3 mm
dn - 64.7 mm
Basic dynamic load rating - C - 19.5 kN
Basic static load rating - C0 - 14.6 kN
Fatigue load limit - Pu - 0.62 kN
Limiting speed for grease lubrication - 19000 r/min
Limiting speed for oil lubrication - 30000 mm/min
Ball - Dw - 7.938 mm
Ball - z - 23
Gref - 2.49 cm3
Calculation factor - f0 - 10.4
Preload class A - GA - 70 N
Preload class B - GB - 140 N
Preload class C - GC - 280 N
Preload class D - GD - 560 N
Calculation factor - f - 1.15
Calculation factor - f1 - 1
Calculation factor - f2A - 1
Calculation factor - f2B - 1.07
Calculation factor - f2C - 1.12
Calculation factor - f2D - 1.18
Calculation factor - fHC - 1.04
Preload class A - 54 N/micron
Preload class B - 72 N/micron
Preload class C - 99 N/micron
Preload class D - 140 N/micron
Mass bearing - 0.152 kg
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CR INDUSTRIAL SEALS Product overview - Accent Bearin
SKF also holds an increasingly important position in the market for linear motion products, high precision aerospace bearings, machine tool spindles, plant maintenance services and is an established producer of high-quality bearing steel. The SKF Group maintains specialized business operations to meet the needs of the global marketplace.