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639/632

Inch Design Tapered Roller Bearings
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Parts Number
639/632 Inch Series Tapered Roller Bearings
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Display units

Parts Number

639/632

Boundary Dimensions

d 63.5 mm Bore diameter
D 136.525 mm Outside diameter
T 41.275 mm Total width
B 41.275 mm Width of inner ring
C 31.75 mm Width of outer ring
Cup r (min.) 3.3 mm Chamfer dimension of outer ring (Cup)
Cone r (min.) 3.5 mm Chamfer dimension of inner ring (Cone)

Basic Load Ratings

Cr 239000 N Basic dynamic load rating
C0r 263000 N Basic static load rating

Speeds

Grease 2800 min-1 Grease lubrication
Oil (Oil-bath) 3800 min-1 Oil-bath lubrication

Dimensions

a 29.9 mm Effective load center

Abutment and Fillet Dimensions

da 79 mm Diameter of shaft abutment
Da 119 mm Diameter of housing abutment
db 76 mm Diameter of shaft abutment
Db 125 mm Diameter of housing abutment
ra (max.) 3.5 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 0.36 Constant
Y0 0.91 Axial load Factors
Y1 1.7 Axial load Factors

Mass

CONE (approx.) 1.77 kg
CUP (approx.) 1.04 kg
CAD
More Information
NSK Product Type2 TRBSR_ID
NSK Product Type Bearing
Designations 639/632

© NSK Ltd.

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