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Model: NACHI 6280/6220 - The imperial tapered roller bearings>
Bearing Size
d = 53.975D = 127
B = 52.388
T = 50.8
C = 41.275
a = 19.5
da(min) = 74
db(max) = 67
Da(min) = 108
Db(min) = 117
r1(min) = 3.5
r2(min) = 3.3
Mass(Cone) = 6280
Mass(Cup) = 6220
Basic load rating: 241000
Basic load rating: 241000
Rated static load: 300000
Limit speed（Grease lubrication）: 3100
Limit speed（Oil lubrication） 4300
