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Model: NACHI 7218BDB - Angular contact ball bearings (DB) back to back>
Bearing Size
d = 90D = 160
B = 30
a = 37.5
da1(min) = 100
da2(min) = 96
Da1(max) = 150
Da2(max) = 154
ra(max) = 2
ra1(max) = 1
Mass = 2.3
Basic load rating: 179000
Rated static load: 194000
Limit speed（Grease lubrication）: 2500
Limit speed（Oil lubrication）: 3400
