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Model: NACHI 3979/3920 - The imperial tapered roller bearings>
Bearing Size
d = 57.15D = 112.712
B = 30.048
T = 30.162
C = 23.812
a = 4.6
da(min) = 72
db(max) = 66
Da(min) = 99
Db(min) = 106
r1(min) = 3.5
r2(min) = 3.3
Mass(Cone) = 3979
Mass(Cup) = 3920
Basic load rating: 118000
Basic load rating: 118000
Rated static load: 172000
Limit speed（Grease lubrication）: 3200
Limit speed（Oil lubrication） 4300
