7228BDB Series

Matched Angular Contact Ball Bearings
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Designations

7228BDB

Boundary Dimensions

d 140 mm Bore diameter
D 250 mm Outside diameter
2B 84 mm Width 2B
r (min.) 3 mm Chamfer dimension
r1 (min.) 1.1 mm Chamfer dimension

Basic Load Ratings

Cr 355000 N Basic dynamic load rating
C0r 425000 N Basic static load rating

Speeds

Grease 1600 min-1 Grease lubrication
Oil (Oil-bath) 2200 min-1 Oil-bath lubrication

Dimensions

a0 205.6 mm Load center spacings

Abutment and Fillet Dimensions

da (min.) 154 mm Diameter of shaft abutment
rb (max.) 1 mm Radius of fillet
Db (max.) 243 mm Diameter of housing abutment
ra (max.) 2.5 mm Radius of shaft or housing fillet

Mass

(approx.) 17.88 kg
CAD
More Information
NSK Product Type2 ACBB_SR_MM
NSK Product Type Bearing
Designations 7228BDB
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