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Model: NACHI 6228 - Deep groove ball bearings>
Bearing Size
d = 140D = 250
B = 42
da(min) = 154
Da(max) = 236
ra(max) = 2.5
Mass = 7.47
Basic load rating: 166000
Rated static load: 150000
Limit speed（Grease lubrication）: 2400
Limit speed（Oil lubrication） 2900
