
Diamond coring motors are used with Vac-U-RigĀ® and Dymorig diamond core rigs to drill holes into reinforced concrete. This 15 amp model provides core drilling power where 20 amp service is unavailable. This unit has a 375 rpm or 750 rpm operating speed. The 4090 uses a shear pin to protect gears and motor against overload. Shear pins are easily replaced and extra pins are included with the unit. This unit will handle core bits from 2-1/2 in. to 8 in. in diameter.
| Max HP | 2.5 |
| Motor Protection | Shear Pin |
| Max Capacity in Concrete | 8" |
| Plug Type | L5-20P |
| Voltage | 120 AC |
| Sugg Dia In Med Aggregate | 5 in.-8 in. / 2-1/2 in.-5 in. |
| No Load RPM | Low=375/High=750 |
| Shipping Weight | 30.0 lbs. |
| Amps | 15.0 |
| Spindle | 1-1/4"-7 |
| Tool Weight | 26.0 lbs. |