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Model: NACHI 7309BDB - Angular contact ball bearings (DB) back to back>
Bearing Size
d = 45D = 100
B = 25
a = 18
da1(min) = 54
da2(min) = 50
Da1(max) = 91
Da2(max) = 94.6
ra(max) = 1.5
ra1(max) = 1
Mass = 0.875
Basic load rating: 97500
Rated static load: 82500
Limit speed（Grease lubrication）: 4500
Limit speed（Oil lubrication）: 6000
