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Model: NACHI 2788/2720 - The imperial tapered roller bearings>
Bearing Size
d = 38.1D = 76.2
B = 25.654
T = 23.812
C = 19.05
a = 8
da(min) = 50
db(max) = 43.5
Da(min) = 66
Db(min) = 70
r1(min) = 3.5
r2(min) = 3.3
Mass(Cone) = 2788
Mass(Cup) = 2720
Basic load rating: 68000
Basic load rating: 68000
Rated static load: 81000
Limit speed（Grease lubrication）: 5000
Limit speed（Oil lubrication） 6700
