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Model: NACHI 555/553X - The imperial tapered roller bearings>
Bearing Size
d = 50.8D = 122.238
B = 36.678
T = 38.1
C = 30.162
a = 9.4
da(min) = 66
db(max) = 62
Da(min) = 108
Db(min) = 115
r1(min) = 2.3
r2(min) = 3.3
Mass(Cone) = 555
Mass(Cup) = 553X
Basic load rating: 149000
Basic load rating: 149000
Rated static load: 197000
Limit speed（Grease lubrication）: 3000
Limit speed（Oil lubrication） 4100
