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.

Product Highlights:

• Two speeds: 375 and 750 rpm
• 15 amp motor
  
• Shear pin protection protects gears and motor
• Built-in water swivel

View Milwaukee Diamond Core Bits here 375/750 15A SHR PIN

• Voltage 120 AC
  
• Amps 15.0
• No Load Speed 375/750 RPM
• Motor Protection Shear Pin
• Spindle 1-1/4 in.-7
• Max. HP 2.5
• Plug Type L5-20P
• Sugg. Dia. In Med. Aggregate 5 in.-8 in. / 2-1/2 in.-5 in.
• Tool Weight 26.0 lbs.

Includes:

• Built-In Water Swivel
• Water Hose Adapter
• Water Control Valve
• Open End Wrench
• Six Extra Shear Pins