305172BC2 Angular Contact Ball Bearing 180x280x92mm

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305172BC2 Angular Contact Ball Bearing 180x280x92mm image

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305172BC2 Angular Contact Ball Bearing 180x280x92mm Specifications

Bearing number:7228 ACD/P4A
Size (mm):250x140x42
Bore Diameter (mm):250
Outer Diameter (mm):140
Width (mm):42
d:140 mm
D:250 mm
B:42 mm
d1:176.8 mm
d2:176.8 mm
D1:213.2 mm
r1,2 - min.:3 mm
r3,4 - min.:1.5 mm
a:66.7 mm
da - min.:154 mm
db - min.:154 mm
Da - max.:236 mm
Db - max.:241 mm
ra - max.:2.5 mm
rb - max.:1.5 mm
dn:184.8 mm
Basic dynamic load rating - C:212 kN
Basic static load rating - C0:228 kN
Fatigue load limit - Pu:7 kN
Limiting speed for grease lubrication:5000 r/min
Limiting speed for oil lubrication:7500 mm/min
Ball - Dw:30.162 mm
Ball - z:18
Gref:83.931 cm3
Calculation factor - e:0.68
Calculation factor - Y2:1.41
Calculation factor - Y0:0.76
Calculation factor - X2:0.67
Calculation factor - Y1:0.92
Preload class A - GA:1350 N
Preload class B - GB:2700 N
Preload class C - GC:5400 N
Preload class D - GD:10800 N
Calculation factor - f:1.09
Calculation factor - f1:0.99
Calculation factor - f2A:1
Calculation factor - f2B:1.01
Calculation factor - f2C:1.02
Calculation factor - f2D:1.05
Calculation factor - fHC:1
Preload class A:397 N/micron
Preload class B:516 N/micron
Preload class C:679 N/micron
Preload class D:911 N/micron
r1,2 min.:3 mm
r3,4 min.:1.5 mm
da min.:154 mm
db min.:154 mm
Da max.:236 mm
Db max.:241 mm
ra max.:2.5 mm
rb max.:1.5 mm
Basic dynamic load rating C:212 kN
Basic static load rating C0:228 kN
Fatigue load limit Pu:6.95 kN
Attainable speed for grease lubrication:5000 r/min
Attainable speed for oil-air lubrication:7500 r/min
Ball diameter Dw:30.162 mm
Number of balls z:18
Reference grease quantity Gref:83.931 cm³
Preload class A GA:1350 N
Static axial stiffness, preload class A:397 N/µm
Preload class B GB:2700 N
Static axial stiffness, preload class B:516 N/µm
Preload class C GC:5400 N
Static axial stiffness, preload class C:679 N/µm
Preload class D GD:10800 N
Static axial stiffness, preload class D:911 N/µm
Calculation factor f:1.09
Calculation factor f1:0.99
Calculation factor f2A:1
Calculation factor f2B:1.01
Calculation factor f2C:1.02
Calculation factor f2D:1.05
Calculation factor fHC:1
Calculation factor e:0.68
Calculation factor (single, tandem) Y2:0.87
Calculation factor (single, tandem) Y0:0.38
Calculation factor (single, tandem) X2:0.41
Calculation factor (back-to-back, face-to-face) Y1:0.92
Calculation factor (back-to-back, face-to-face) Y2:1.41
Calculation factor (back-to-back, face-to-face) Y0:0.76
Calculation factor (back-to-back, face-to-face) X2:0.67
Mass bearing:8.14 kg

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305172BC2 Angular Contact Ball Bearing 180x280x92mm Specifications

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