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Model: NACHI 7312DB - Angular contact ball bearings (DB) back to back>
Bearing Size
d = 60D = 130
B = 31
a = 11.9
da1(min) = 72
da2(min) = 67
Da1(max) = 118
Da2(max) = 123
ra(max) = 2
ra1(max) = 1
Mass = 1.81
Basic load rating: 159000
Rated static load: 148000
Limit speed（Grease lubrication）: 3800
Limit speed（Oil lubrication）: 5000
