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Model: NACHI 7008CDB - Angular contact ball bearings (DB) back to back>
Bearing Size
d = 40D = 68
B = 15
a = -1.3
da1(min) = 45
da2(min) = 45
Da1(max) = 63
Da2(max) = 65
ra(max) = 1
ra1(max) = 0.6
Mass = 0.21
Basic load rating: 33500
Rated static load: 32000
Limit speed（Grease lubrication）: 12000
Limit speed（Oil lubrication）: 16000
