Angular contact ball bearings, super-precision 7052 ACD/P4A
Bearing number : 7052 ACD/P4A
Size (mm) : 260x400x65
Brand : SKF
Bore Diameter (mm) : 260
Outer Diameter (mm) : 400
Width (mm) : 65
Bearing dimensions and specification in SKF catalogue:
d - 260 mm
D - 400 mm
B - 65 mm
d1 - 303.2 mm
d2 - 303.2 mm
D1 - 356.8 mm
r1,2 - min. - 4 mm
r3,4 - min. - 1.5 mm
a - 109.8 mm
da - min. - 275 mm
db - min. - 275 mm
Da - max. - 385 mm
Db - max. - 393 mm
ra - max. - 3 mm
rb - max. - 1.5 mm
dn - 315 mm
Basic dynamic load rating - C - 397 kN
Basic static load rating - C0 - 600 kN
Fatigue load limit - Pu - 14 kN
Limiting speed for grease lubrication - 3000 r/min
Limiting speed for oil lubrication - 4500 mm/min
Ball - Dw - 44.45 mm
Ball - z - 21
Gref - 324 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 - 2480 N
Preload class B - GB - 4960 N
Preload class C - GC - 9920 N
Preload class D - GD - 19840 N
Calculation factor - f - 1.13
Calculation factor - f1 - 0.99
Calculation factor - f2A - 1
Calculation factor - f2B - 1.02
Calculation factor - f2C - 1.05
Calculation factor - f2D - 1.08
Calculation factor - fHC - 1
Preload class A - 617 N/micron
Preload class B - 801 N/micron
Preload class C - 1053 N/micron
Preload class D - 1409 N/micron
Mass bearing - 25.56 kg
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