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Model: NACHI 7205CDB - Angular contact ball bearings (DB) back to back>
Bearing Size
d = 25D = 52
B = 15
a = -3.1
da1(min) = 31
da2(min) = 31
Da1(max) = 46
Da2(max) = 48.4
ra(max) = 1
ra1(max) = 0.6
Mass = 0.135
Basic load rating: 27100
Rated static load: 20700
Limit speed（Grease lubrication）: 17000
Limit speed（Oil lubrication）: 23000
