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25878/25820

Inch Design Tapered Roller Bearings
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Parts Number
25878/25820 Inch Series Tapered Roller Bearings
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Display units

Parts Number

25878/25820

Boundary Dimensions

d 34.925 mm Bore diameter
D 73.025 mm Outside diameter
T 23.812 mm Total width
B 24.608 mm Width of inner ring
C 19.05 mm Width of outer ring
Cup r (min.) 2.3 mm Chamfer dimension of outer ring (Cup)
Cone r (min.) 3.5 mm Chamfer dimension of inner ring (Cone)

Basic Load Ratings

Cr 87500 N Basic dynamic load rating
C0r 86000 N Basic static load rating

Speeds

Grease 5300 min-1 Grease lubrication
Oil (Oil-bath) 7100 min-1 Oil-bath lubrication

Dimensions

a 15.7 mm Effective load center

Abutment and Fillet Dimensions

da 47 mm Diameter of shaft abutment
Da 64 mm Diameter of housing abutment
db 40.5 mm Diameter of shaft abutment
Db 68 mm Diameter of housing abutment
ra (max.) 3.5 mm Radius of shaft or housing fillet of inner ring
ra (max.) 2.3 mm Radius of shaft or housing fillet of outer ring

Calculation factors

e 0.29 Constant
Y0 1.1 Axial load Factors
Y1 2.1 Axial load Factors

Mass

CONE (approx.) 0.304 kg
CUP (approx.) 0.165 kg
CAD
More Information
NSK Product Type2 TRBSR_ID
NSK Product Type Bearing
Designations 25878/25820

© NSK Ltd.

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