021.30.900 Double-row Ball With Different Diameter Bearing

021.30.900  the double row ball with different diameter bearing can bear very large axial force and overturning moment,the raceway shouble be special designing while the radial force is greater 0.1 time than the axial force.double row ball with different diameter bearing of axial sizes and radial sizes are rather large,compact form.It is especially used in loading and unloading machines above the average diameter,such as tower cranes,ship cranes and so on.

We have strict quality control system in our own factory, meanwhile, we have passed ISO9001-2008 Quality System Certification.
We will assist you throughout the design, manufacturing and implementation process. Our goal is to use our resources to extend your company capabilities and provide a comprehensive solutions package for all your application needs. 
Advantages: 

1.higher speed and lower noise
2. Best quality and price 
3. Small order accepted 
4. ISO certified company 
5. Variorum models 
6. Extensive stock available 
7. OEM accepted