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Model: NACHI 7307CDF - Angular contact ball bearings (DF) face to face>
Bearing Size
d = 35D = 80
B = 21
a = -3.9
da1(min) = 44
da2(min) = 44
Da1(max) = 71
Da2(max) = 74.6
ra(max) = 1.5
ra1(max) = 1
Mass = 0.475
Basic load rating: 66000
Rated static load: 52000
Limit speed（Grease lubrication）: 11000
Limit speed（Oil lubrication）: 15000
