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Model: NACHI 7009CDB - Angular contact ball bearings (DB) back to back>
Bearing Size
d = 45D = 75
B = 16
a = -1.1
da1(min) = 50
da2(min) = 50
Da1(max) = 70
Da2(max) = 72
ra(max) = 1
ra1(max) = 0.6
Mass = 0.265
Basic load rating: 40000
Rated static load: 39000
Limit speed（Grease lubrication）: 10000
Limit speed（Oil lubrication）: 14000
