| Part Number | MB538DD |
| Standard Reference | MS21428-38 |
| System of Measurement | Inch |
| Bore Dia | 0.625″ |
| Bore Dia Tolerance | -0.0005″ to 0″ |
| Outer Dia | 1.0625″ |
| Outer Dia Tolerance | -0.0005″ to 0″ |
| Ring Width Outer Height | 0.25″ |
| Ring Width Outer Height Tolerance | -0.005″ to 0″ |
| Ring Width Inner Width | 0.281″ |
| Ring Width Inner Width Tolerance | -0.0025″ to 0″ |
| Ball Complement No | 21 |
| Ball Complement Dia | 1/8″ |
| Ring Shoulder Outer | 0.898″ |
| Ring Shoulder Inner | 0.785″ |
| Ring Chamfer Outer | 0.015″ |
| Ring Chamfer Outer Tolerance | 0″ to 0.015″ |
| Ring Chamfer Inner | 0.015″ |
| Ring Chamfer Inner Tolerance | 0″ to 0.015″ |
| Radial Internal Clearance | 0.0001″ to 0.0005″ |
| Static Radial Load | 3280 lbs |
| Static Thrust Load | 1500 lbs |
| Dynamic Radial Ring Inner Load | 1990 lbs |
| Dynamic Radial Ring Outer Load | 1820 lbs |
| Max Starting Torque | 2 oz-in |
| Weight | 0.03 lbs |
