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Model: NACHI 7207BDB - Angular contact ball bearings (DB) back to back>
Bearing Size
d = 35D = 72
B = 17
a = 14.1
da1(min) = 42
da2(min) = 40
Da1(max) = 65
Da2(max) = 67
ra(max) = 1
ra1(max) = 0.6
Mass = 0.295
Basic load rating: 45500
Rated static load: 38000
Limit speed（Grease lubrication）: 6000
Limit speed（Oil lubrication）: 8000
