SKF single row deep groove with a loaded ball bearing gap 
 SKF single row deep groove ball with filling the gap, including the outer ring has a bearing fitted with a gap, to load more than the standard deep groove ball bearings and a larger ball. Its radial load carrying capacity than the standard SKF deep groove ball bearings, but its axial load carrying capacity is relatively small. Can not meet the standard SKF deep groove ball bearing-like high speed. 

 SKF double row deep groove ball bearings 
 SKF double row deep groove ball bearing design with single row deep groove ball bearings are basically the same. Plus the deep groove-shaped raceway between the raceway and the ball has an excellent microleakage. 

 Brand: SKF 
 SKF type: 4303 ATN9 
 Parameters: diameter 17 (mm) 
 OD 47 (mm) 
 Thickness 14 (mm) 
 Weight 0.16 (kg) 
 Using characteristics: high temperature