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478/472A

Inch Design Tapered Roller Bearings
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Parts Number
478/472A Inch Series Tapered Roller Bearings
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Display units

Parts Number

478/472A

Boundary Dimensions

d 65 mm Bore diameter
D 120 mm Outside diameter
T 29.002 mm Total width
B 29.007 mm Width of inner ring
C 23.444 mm Width of outer ring
Cup r (min.) 3.3 mm Chamfer dimension of outer ring (Cup)
Cone r (min.) 2.3 mm Chamfer dimension of inner ring (Cone)

Basic Load Ratings

Cr 151000 N Basic dynamic load rating
C0r 169000 N Basic static load rating

Speeds

Grease 3000 min-1 Grease lubrication
Oil (Oil-bath) 4000 min-1 Oil-bath lubrication

Dimensions

a 24.3 mm Effective load center

Abutment and Fillet Dimensions

da 77 mm Diameter of shaft abutment
Da 106 mm Diameter of housing abutment
db 73 mm Diameter of shaft abutment
Db 114 mm Diameter of housing abutment
ra (max.) 2.3 mm Radius of shaft or housing fillet of inner ring
ra (max.) 3.3 mm Radius of shaft or housing fillet of outer ring

Calculation factors

e 0.38 Constant
Y0 0.86 Axial load Factors
Y1 1.6 Axial load Factors

Mass

CONE (approx.) 0.942 kg
CUP (approx.) 0.466 kg
CAD
More Information
NSK Product Type2 TRBSR_ID
NSK Product Type Bearing
Designations 478/472A

© NSK Ltd.

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