| Part Number | K8AR4 |
| System of Measurement | Inch |
| Bore Dia | 0.5″ |
| Bore Dia Tolerance | -0.0005″ to 0″ |
| Outer Dia | 1.25″ |
| Outer Dia Tolerance | -0.002″ to 0″ |
| Ring Width Outer Height | 0.375″ |
| Ring Width Outer Height Tolerance | -0.005″ to 0″ |
| Ring Width Inner Width | 0.344″ |
| Ring Width Inner Width Tolerance | -0.0025″ to 0″ |
| Ball Complement No | 16 |
| Ball Complement Dia | 5/32″ |
| Ring Shoulder Inner | 0.61″ |
| Ring Chamfer Outer | 0.015″ |
| Ring Chamfer Outer Tolerance | 0″ to 0.015″ |
| Ring Chamfer Inner | 0.016″ |
| Ring Chamfer Inner Tolerance | 0″ to 0.015″ |
| Radial Internal Clearance | 0.004″ to 0.0010″ |
| Weight | 0.05 lbs |