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Model: NACHI 7222DB - Angular contact ball bearings (DB) back to back>
Bearing Size
d = 110D = 200
B = 38
a = 25.7
da1(min) = 122
da2(min) = 117
Da1(max) = 188
Da2(max) = 193
ra(max) = 2
ra1(max) = 1
Mass = 4.62
Basic load rating: 276000
Rated static load: 315000
Limit speed（Grease lubrication）: 2200
Limit speed（Oil lubrication）: 3000
