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Model: NACHI 6004 - 2NKE - Non-contact double sealed deep groove ball bearings>
Bearing Size
d = 20D = 42
B = 12
da(min) = 24
Da(max) = 38
ra(max) = 0.6
Mass = 0.07
Basic load rating: 9400
Rated static load: 5000
Limit speed（Grease lubrication）: 11000
