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2559/2523

Inch Design Tapered Roller Bearings
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Parts Number
2559/2523 Inch Series Tapered Roller Bearings
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Display units

Parts Number

2559/2523

Boundary Dimensions

d 30.162 mm Bore diameter
D 69.85 mm Outside diameter
T 23.812 mm Total width
B 25.357 mm Width of inner ring
C 19.05 mm Width of outer ring
Cup r (min.) 1.3 mm Chamfer dimension of outer ring (Cup)
Cone r (min.) 0.8 mm Chamfer dimension of inner ring (Cone)

Basic Load Ratings

Cr 87000 N Basic dynamic load rating
C0r 84000 N Basic static load rating

Speeds

Grease 5600 min-1 Grease lubrication
Oil (Oil-bath) 7500 min-1 Oil-bath lubrication

Dimensions

a 14.5 mm Effective load center

Abutment and Fillet Dimensions

da 37 mm Diameter of shaft abutment
Da 61 mm Diameter of housing abutment
db 36.5 mm Diameter of shaft abutment
Db 64 mm Diameter of housing abutment
ra (max.) 0.8 mm Radius of shaft or housing fillet of inner ring
ra (max.) 1.3 mm Radius of shaft or housing fillet of outer ring

Calculation factors

e 0.27 Constant
Y0 1.2 Axial load Factors
Y1 2.2 Axial load Factors

Mass

CONE (approx.) 0.298 kg
CUP (approx.) 0.169 kg
CAD
More Information
NSK Product Type2 TRBSR_ID
NSK Product Type Bearing
Designations 2559/2523

© NSK Ltd.

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