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28138/28315

Inch Design Tapered Roller Bearings
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Parts Number
28138/28315 Inch Series Tapered Roller Bearings
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Display units

Parts Number

28138/28315

Boundary Dimensions

d 34.976 mm Bore diameter
D 80 mm Outside diameter
T 21.006 mm Total width
B 20.94 mm Width of inner ring
C 15.875 mm Width of outer ring
Cup r (min.) 1.5 mm Chamfer dimension of outer ring (Cup)
Cone r (min.) 1.5 mm Chamfer dimension of inner ring (Cone)

Basic Load Ratings

Cr 69500 N Basic dynamic load rating
C0r 64500 N Basic static load rating

Speeds

Grease 5000 min-1 Grease lubrication
Oil (Oil-bath) 6700 min-1 Oil-bath lubrication

Dimensions

a 16 mm Effective load center

Abutment and Fillet Dimensions

da 43.5 mm Diameter of shaft abutment
Da 69 mm Diameter of housing abutment
db 41 mm Diameter of shaft abutment
Db 73 mm Diameter of housing abutment
ra (max.) 1.5 mm Radius of shaft or housing fillet of inner ring
ra (max.) 1.5 mm Radius of shaft or housing fillet of outer ring

Calculation factors

e 0.4 Constant
Y0 0.82 Axial load Factors
Y1 1.5 Axial load Factors

Mass

CONE (approx.) 0.308 kg
CUP (approx.) 0.199 kg
CAD
More Information
NSK Product Type2 TRBSR_ID
NSK Product Type Bearing
Designations 28138/28315

© NSK Ltd.

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