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78250/78551

Inch Series Tapered Roller Bearings
Inch Series Tapered Roller Bearings

Product Information

Designations

78250/78551

Boundary Dimensions

d 63.5 mm
D 140.03 mm
B 33.236 mm
T 36.512 mm
C 23.52 mm
Cup r (min.) 2.3 mm
Cone r (min.) 2.3 mm

Basic Load Ratings

Cr 187000 N Basic dynamic load rating
C0r 183000 N Basic static load rating

Speeds

Grease 2600 min-1
Oil 3600 min-1

Dimensions

a 44.2 mm

Abutment and Fillet Dimensions

da 85 mm
db 79 mm
Da 117 mm
Db 132 mm
ra (max.) 2.3 mm

Calculation factors

e 0.87
Y1 0.69
Y0 0.38

Additional information

Mass

(approx.) 1.51 kg