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Model: NACHI 645/632 - The imperial tapered roller bearings>
Bearing Size
d = 71.438D = 136.525
B = 41.275
T = 41.275
C = 31.75
a = 11
da(min) = 98
db(max) = 83
Da(min) = 108
Db(min) = 123
r1(min) = 6.4
r2(min) = 3.2
Mass(Cone) = 645
Mass(Cup) = 632
Basic load rating: 197000
Basic load rating: 197000
Rated static load: 267000
Limit speed（Grease lubrication）: 2500
Limit speed（Oil lubrication） 3500
