HM212049/HM212010

Inch Design Tapered Roller Bearings
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Parts Number

HM212049/HM212010

Boundary Dimensions

d 66.675 mm Bore diameter
D 122.238 mm Outside diameter
T 38.1 mm Total width
B 38.354 mm Width of inner ring
C 29.718 mm Width of outer ring
Cup r (min.) 1.5 mm Chamfer dimension of outer ring (Cup)
Cone r (min.) 3.5 mm Chamfer dimension of inner ring (Cone)

Basic Load Ratings

Cr 231000 N Basic dynamic load rating
C0r 245000 N Basic static load rating

Speeds

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

Dimensions

a 26.9 mm Effective load center

Abutment and Fillet Dimensions

da 82 mm Diameter of shaft abutment
Da 110 mm Diameter of housing abutment
db 75 mm Diameter of shaft abutment
Db 116 mm Diameter of housing abutment
ra (max.) 3.5 mm Radius of shaft or housing fillet of inner ring
ra (max.) 1.5 mm Radius of shaft or housing fillet of outer ring

Calculation factors

e 0.34 Constant
Y0 0.98 Axial load Factors
Y1 1.8 Axial load Factors

Mass

CONE (approx.) 1.25 kg
CUP (approx.) 0.604 kg
CAD
More Information
NSK Product Type2 TRBSR_ID
NSK Product Type Bearing
Designations HM212049/HM212010
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