Angular contact ball bearings, super-precision 7220 ACD/HCP4A
Bearing number : 7220 ACD/HCP4A
Size (mm) : 100x180x34
Brand : SKF
Bore Diameter (mm) : 100
Outer Diameter (mm) : 180
Width (mm) : 34
Bearing dimensions and specification in SKF catalogue:
d - 100 mm
D - 180 mm
B - 34 mm
d1 - 124.7 mm
d2 - 124.7 mm
D1 - 155.3 mm
r1,2 - min. - 2.1 mm
r3,4 - min. - 1.1 mm
a - 49.9 mm
da - min. - 112 mm
db - min. - 112 mm
Da - max. - 168 mm
Db - max. - 173 mm
ra - max. - 2 mm
rb - max. - 1 mm
dn - 131.4 mm
Basic dynamic load rating - C - 148 kN
Basic static load rating - C0 - 129 kN
Fatigue load limit - Pu - 4.6 kN
Limiting speed for grease lubrication - 8000 r/min
Limiting speed for oil lubrication - 13000 mm/min
Ball - Dw - 25.4 mm
Ball - z - 15
Gref - 40.899 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 - 950 N
Preload class B - GB - 1900 N
Preload class C - GC - 3800 N
Preload class D - GD - 7600 N
Calculation factor - f - 1.09
Calculation factor - f1 - 0.99
Calculation factor - f2A - 1
Calculation factor - f2B - 1.01
Calculation factor - f2C - 1.03
Calculation factor - f2D - 1.06
Calculation factor - fHC - 1.01
Preload class A - 329 N/micron
Preload class B - 430 N/micron
Preload class C - 565 N/micron
Preload class D - 760 N/micron
Mass bearing - 2.637 kg
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SKF achieves this by combining hands-on experience in over 40 industries with its knowledge across the SKF technology platforms: bearings and units, seals, mechatronics, services and lubrication systems. The company's success is based on this knowledge and commitment to SKF Care principles.
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