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Model: NACHI 6905ZZE - Two dust cover deep groove ball bearings>
Bearing Size
d = 25D = 42
B = 9
da(min) = 27
Da(max) = 40
ra(max) = 0.3
Mass = 0.042
Basic load rating: 7000
Rated static load: 4500
Limit speed（Grease lubrication）: 9500
