| 
              
              
                | MODEL 
                  NO. | INSCRIBED CIRCLE 
                  DIAMETER | OUTER 
                  DIAMETER | DIAMETER 
                  TOLERANCE | DEPTH OF 
                  EFFECTIVE HARDENED LAYER | WEIGHT(kg/m) |  
                | g6 | h6 |  
                | SP13 | 6 | 13 | -0.006 -0.017 | 0 -0.011 | >1.0 | 0.82 |  
                | SP16 | 8 | 16 | >1.5 | 1.18 |  
                | SP20 | 10 | 20 | -0.007 -0.020 | 0 -0.013 | 1.85 |  
                | SP25 | 15 | 25 | >1.8 | 2.46 |  
                | SP30 | 16 | 30 | -0.009 -0.025 | 0 -0.016 | 3.97 |  
                | SP35 | 19 | 35 | 5.32 |  
                | SP40 | 20 | 40 | >2.2 | 7.39 |  
                | SP50 | 26 | 50 | 11.3 |  
 |