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Model: NACHI 68450/68712 - The imperial tapered roller bearings>
Bearing Size
d = 114.3D = 181
B = 31.75
T = 34.925
C = 25.4
a = -5.5
da(min) = 136
db(max) = 125
Da(min) = 160
Db(min) = 172
r1(min) = 3.5
r2(min) = 3.3
Mass(Cone) = 68450
Mass(Cup) = 68712
Basic load rating: 173000
Basic load rating: 173000
Rated static load: 249000
Limit speed（Grease lubrication）: 1900
Limit speed（Oil lubrication） 2500
