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Model: NACHI 5304 - Open type double row angular contact ball bearings>
Bearing Size
d = 20D = 52
B = 22.2
da(min) = 27
Da(max) = 45
ra(max) = 1
Mass = 0.23
Basic load rating: 21700
Rated static load: 13300
Limit speed（Grease lubrication）: 9000
Limit speed（Oil lubrication）: 11000
