All Brands
Model: NACHI 6903ZZE - Two dust cover deep groove ball bearings>
Bearing Size
d = 17D = 30
B = 7
da(min) = 19
Da(max) = 28
ra(max) = 0.3
Mass = 0.018
Basic load rating: 4600
Rated static load: 2550
Limit speed（Grease lubrication）: 14000
