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Model: NACHI 7030CDB - Angular contact ball bearings (DB) back to back>
Bearing Size
d = 150D = 225
B = 35
a = 4.1
da1(min) = 159
da2(min) = 159
Da1(max) = 216
Da2(max) = 219
ra(max) = 2
ra1(max) = 1
Mass = 4.42
Basic load rating: 247000
Rated static load: 340000
Limit speed（Grease lubrication）: 3400
Limit speed（Oil lubrication）: 4700
