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Model: NACHI 7221DT - Angular contact ball bearing series (DT)>
Bearing Size
d = 105D = 190
B = 36
a = 24.6
da1(min) = 117
da2(min) = 112
Da1(max) = 178
Da2(max) = 183
ra(max) = 2
ra1(max) = 1
Mass = 3.93
Basic load rating: 254000
Rated static load: 283000
Limit speed（Grease lubrication）: 2400
Limit speed（Oil lubrication）: 3200
