4T-6280 Cylindrical Roller Bearings Interchange 2018 NEW
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

Product Details

Bearing number7228 ACD/P4A
Size (mm)250x140x42
Bore Diameter (mm)250
Outer Diameter (mm)140
Width (mm)42
d140 mm
D250 mm
B42 mm
d1176.8 mm
d2176.8 mm
D1213.2 mm
r1,2 - min.3 mm
r3,4 - min.1.5 mm
a66.7 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
dn184.8 mm
Basic dynamic load rating - C212 kN
Basic static load rating - C0228 kN
Fatigue load limit - Pu7 kN
Limiting speed for grease lubrication5000 r/min
Limiting speed for oil lubrication7500 mm/min
Ball - Dw30.162 mm
Ball - z18
Gref83.931 cm3
Calculation factor - e0.68
Calculation factor - Y21.41
Calculation factor - Y00.76
Calculation factor - X20.67
Calculation factor - Y10.92
Preload class A - GA1350 N
Preload class B - GB2700 N
Preload class C - GC5400 N
Preload class D - GD10800 N
Calculation factor - f1.09
Calculation factor - f10.99
Calculation factor - f2A1
Calculation factor - f2B1.01
Calculation factor - f2C1.02
Calculation factor - f2D1.05
Calculation factor - fHC1
Preload class A397 N/micron
Preload class B516 N/micron
Preload class C679 N/micron
Preload class D911 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 C212 kN
Basic static load rating C0228 kN
Fatigue load limit Pu6.95 kN
Attainable speed for grease lubrication5000 r/min
Attainable speed for oil-air lubrication7500 r/min
Ball diameter Dw30.162 mm
Number of balls z18
Reference grease quantity Gref83.931 cm³
Preload class A GA1350 N
Static axial stiffness, preload class A397 N/µm
Preload class B GB2700 N
Static axial stiffness, preload class B516 N/µm
Preload class C GC5400 N
Static axial stiffness, preload class C679 N/µm
Preload class D GD10800 N
Static axial stiffness, preload class D911 N/µm
Calculation factor f1.09
Calculation factor f10.99
Calculation factor f2A1
Calculation factor f2B1.01
Calculation factor f2C1.02
Calculation factor f2D1.05
Calculation factor fHC1
Calculation factor e0.68
Calculation factor (single, tandem) Y20.87
Calculation factor (single, tandem) Y00.38
Calculation factor (single, tandem) X20.41
Calculation factor (back-to-back, face-to-face) Y10.92
Calculation factor (back-to-back, face-to-face) Y21.41
Calculation factor (back-to-back, face-to-face) Y00.76
Calculation factor (back-to-back, face-to-face) X20.67
Mass bearing8.14 kg
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Company Profile

Bearing Distributors Inc
Worktime 9.00--18.00
Phone 0065-31591338
Fax 0065-31591338
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