Deep groove ball bearing rubber cover or iron cover seal which is better
Deep groove ball bearings (GB/T 276-1994) originally listed radial ball bearings are the most widely used rolling bearing. It is characterized by low frictional resistance and high speed. It can be used on parts that bear radial load or a combined load that acts on both radial and axial directions. It can also be used on parts that bear axial load, such as low-power motors, ... READ MORE +