
Boundary Dimensions
d 20.638 mm Bore diameter
D 49.225 mm Outside diameter
T 19.845 mm Total width
B 19.845 mm Width of inner ring
C 15.875 mm Width of outer ring
Cup r (min.) 1.5 mm Chamfer dimension of outer ring (Cup)
Cone r (min.) 1.5 mm Chamfer dimension of inner ring (Cone)
Basic Load Ratings
Cr 44000 N Basic dynamic load rating
C0r 37000 N Basic static load rating
Speeds
Grease 8000 min-1 Grease lubrication
Oil (Oil-bath) 11000 min-1 Oil-bath lubrication
Dimensions
a 12.9 mm Effective load center
Abutment and Fillet Dimensions
da 28.5 mm Diameter of shaft abutment
Da 42.5 mm Diameter of housing abutment
db 26 mm Diameter of shaft abutment
Db 45.5 mm Diameter of housing abutment
ra (max.) 1.5 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 0.32 Constant
Y0 1 Axial load Factors
Y1 1.9 Axial load Factors
Mass
CONE (approx.) 0.114 kg
CUP (approx.) 0.067 kg
12580/12520 bearing
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ZWZ LYC C&U TWB TMB HRB LS NSK ROLLWAY
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