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Model: NACHI 7228DT - Angular contact ball bearing series (DT)>
Bearing Size
d = 140D = 250
B = 42
a = 35.3
da1(min) = 154
da2(min) = 147
Da1(max) = 236
Da2(max) = 243
ra(max) = 2.5
ra1(max) = 1
Mass = 8.78
Basic load rating: 345000
Rated static load: 525000
Limit speed（Grease lubrication）: 1800
Limit speed（Oil lubrication）: 2400
