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Model: NACHI 74550/74850 - The imperial tapered roller bearings>
Bearing Size
d = 139.7D = 215.9
B = 47.625
T = 47.625
C = 34.925
a = -2.2
da(min) = 158
db(max) = 151
Da(min) = 196
Db(min) = 208
r1(min) = 3.5
r2(min) = 3.3
Mass(Cone) = 74550
Mass(Cup) = 74850
Basic load rating: 320000
Basic load rating: 320000
Rated static load: 565000
Limit speed（Grease lubrication）: 1500
Limit speed（Oil lubrication） 2100
