| Catalog Number | NB50BKW1SS |
| Outside Diameter (A) | 50mm (1.969")+ .006 - .000 |
| Bore Diameter (B) | 1.000± .001 |
| Total Length (C) | 5.43± .030 |
| Centerline to End (D) | 2.72± .015 |
| Hub/Bore Length (E) | 1.65± .015 |
| Shaft to Shaft Distance (F) | 2.20 |
| Set Screw Size (G) | 3/8-16 NCUnified Std Threads Class 3B |
| Keyway Size (H) | 1/4 x 1/8Commercial Tolerance |
| Far Side to Bottom of Keyway (I) | 1.109+ .010 - .000 |
| Approximate Weight | 3.40Pounds |