|No Load RPM
|Suggested Dia in Med Aggregate
||5"-8" / 2-1/2"-5"
Diamond coring motors are used with Vac-U-Rig® 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.
- Two speeds: 375 and 750 rpm
- 15 amp motor
- Shear pin protection protects gears and motor
- Built-in water swivel
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