Angular contact ball bearings, super-precision 7048 ACD/HCP4A
Bearing number : 7048 ACD/HCP4A
Size (mm) : 240x360x56
Brand : SKF
Bore Diameter (mm) : 240
Outer Diameter (mm) : 360
Width (mm) : 56
Bearing dimensions and specification in SKF catalogue:
d - 240 mm
D - 360 mm
B - 56 mm
d1 - 277 mm
d2 - 277 mm
D1 - 323 mm
r1,2 - min. - 3 mm
r3,4 - min. - 1.5 mm
a - 98.3 mm
da - min. - 253 mm
db - min. - 253 mm
Da - max. - 347 mm
Db - max. - 354 mm
ra - max. - 2.5 mm
rb - max. - 1.5 mm
dn - 287 mm
Basic dynamic load rating - C - 325 kN
Basic static load rating - C0 - 465 kN
Fatigue load limit - Pu - 11.4 kN
Limiting speed for grease lubrication - 4300 r/min
Limiting speed for oil lubrication - 6300 mm/min
Ball - Dw - 38.1 mm
Ball - z - 22
Gref - 216 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 - 2050 N
Preload class B - GB - 4100 N
Preload class C - GC - 8200 N
Preload class D - GD - 16400 N
Calculation factor - f - 1.15
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 - 1.02
Preload class A - 634 N/micron
Preload class B - 824 N/micron
Preload class C - 1086 N/micron
Preload class D - 1460 N/micron
Mass bearing - 14.127 kg
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