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3188/3120

Inch Design Tapered Roller Bearings
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Parts Number
3188/3120 Inch Series Tapered Roller Bearings
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Display units

Parts Number

3188/3120

Boundary Dimensions

d 31.75 mm Bore diameter
D 72.626 mm Outside diameter
T 30.162 mm Total width
B 29.997 mm Width of inner ring
C 23.812 mm Width of outer ring
Cup r (min.) 3.3 mm Chamfer dimension of outer ring (Cup)
Cone r (min.) 0.8 mm Chamfer dimension of inner ring (Cone)

Basic Load Ratings

Cr 97500 N Basic dynamic load rating
C0r 90000 N Basic static load rating

Speeds

Grease 5300 min-1 Grease lubrication
Oil (Oil-bath) 7500 min-1 Oil-bath lubrication

Dimensions

a 19.6 mm Effective load center

Abutment and Fillet Dimensions

da 39.5 mm Diameter of shaft abutment
Da 61 mm Diameter of housing abutment
db 39.5 mm Diameter of shaft abutment
Db 67 mm Diameter of housing abutment
ra (max.) 0.8 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 0.33 Constant
Y0 0.99 Axial load Factors
Y1 1.8 Axial load Factors

Mass

CONE (approx.) 0.368 kg
CUP (approx.) 0.225 kg
CAD
More Information
NSK Product Type2 TRBSR_ID
NSK Product Type Bearing
Designations 3188/3120

© NSK Ltd.

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