| D - Outer Diameter | N/A 830 mm32.6770 in | 
| B' - Inner Ring Width | N/A 264 mm10.394 in | 
| B - Outer Ring Width | N/A 264 mm10.3940 in | 
| R - Inner Ring "To Clear" Radius1 | N/A 6 mm0.24 in | 
| r - Outer Ring "To Clear" Radius2 | N/A 6 mm0.24 in | 
| da - Inner Ring Backing Diameter | N/A 572.000 mm22.500 in | 
| Da - Outer Ring Backing Diameter | N/A 753.000 mm29.700 in | 
