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Model: NACHI 7307DB - Angular contact ball bearings (DB) back to back>
Bearing Size
d = 35D = 80
B = 21
a = 6.1
da1(min) = 44
da2(min) = 40
Da1(max) = 71
Da2(max) = 74.6
ra(max) = 1.5
ra1(max) = 1
Mass = 0.475
Basic load rating: 65000
Rated static load: 52500
Limit speed（Grease lubrication）: 6300
Limit speed（Oil lubrication）: 8500
