roduct name: Ball Spacer/Seperator used in slewing ring bearing. 
Other name: Concaved Spacer Support 
1.Material: Nylon 6,1010,HDPE 
2. Color: Natural 
3. Used in slewing rings, with combination of steel balls 

It including: 
Ball type (D):   
Window type(F): 
Radial type(R): 
Crossed roller type(X):