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Model: NACHI 661/653 - The imperial tapered roller bearings>
Bearing Size
d = 79.375D = 146.05
B = 41.275
T = 41.275
C = 31.75
a = 7.9
da(min) = 96
db(max) = 90
Da(min) = 131
Db(min) = 139
r1(min) = 3.5
r2(min) = 3.3
Mass(Cone) = 661
Mass(Cup) = 653
Basic load rating: 188000
Basic load rating: 188000
Rated static load: 260000
Limit speed（Grease lubrication）: 2500
Limit speed（Oil lubrication） 3300
