Angular contact ball bearings, super-precision 71968 ACDMA/HCP4A
Bearing number : 71968 ACDMA/HCP4A
Size (mm) : 340x460x56
Brand : SKF
Bore Diameter (mm) : 340
Outer Diameter (mm) : 460
Width (mm) : 56
Bearing dimensions and specification in SKF catalogue:
d - 340 mm
D - 460 mm
B - 56 mm
d1 - 377 mm
d2 - 377 mm
D1 - 423 mm
r1,2 - min. - 3 mm
r3,4 - min. - 1.1 mm
a - 121.6 mm
da - min. - 353 mm
db - min. - 353 mm
Da - max. - 445 mm
Db - max. - 454 mm
ra - max. - 2.5 mm
rb - max. - 1 mm
dn - 387 mm
Basic dynamic load rating - C - 364 kN
Basic static load rating - C0 - 640 kN
Fatigue load limit - Pu - 13.4 kN
Limiting speed for grease lubrication - 2400 r/min
Limiting speed for oil lubrication - 3800 mm/min
Ball - Dw - 38.1 mm
Ball - z - 29
Gref - 294 cm3
Calculation factor - e - 0.68
Calculation factor - Y2 - 0.87
Calculation factor - Y0 - 0.38
Calculation factor - X2 - 0.41
Calculation factor - Y1 - 0.92
Calculation factor - Y2 - 1.41
Calculation factor - Y0 - 0.76
Calculation factor - X2 - 0.67
Preload class A - GA - 2300 N
Preload class B - GB - 4600 N
Preload class C - GC - 9200 N
Preload class D - GD - 18400 N
Calculation factor - f - 1.27
Calculation factor - f1 - 0.98
Calculation factor - f2A - 1
Calculation factor - f2B - 1.07
Calculation factor - f2C - 1.12
Calculation factor - f2D - 1.17
Calculation factor - fHC - 1.04
Preload class A - 820 N/micron
Preload class B - 1073 N/micron
Preload class C - 1425 N/micron
Preload class D - 1934 N/micron
Mass bearing - 21.551 kg
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