Milwaukee 2780-20 M18 Fuel 4-1/2″ / 5″ Grinder w/ Paddle Switch

(2 customer reviews)


In stock


Milwaukee 2780-20 M18 Fuel 4-1/2" / 5" Grinder w/ Paddle Switch, No-Lock (Tool Only)

  • World's first cordless grinder to deliver the performance of a corded tool
  • Uses the same gearing system, metal housing,  guards, flanges and anti-vibration side handles as Milwaukee's high performance corded grinders
  • Electronic clutch prevents bind-up and extends tool life
  • Up to 10X longer motor life means a significantly lower cost of ownership
  • POWERSTATE brushless motor delivers over 80% more power under load, 60% more peak torque and 200% more run-time
  • REDLINK PLUS intelligence system optimizes performance and protects from overloading, over-discharging, and overheating
  • REDLITHIUM battery pack delivers up to 20% more power, up to 2X more run-time, and over 2X more recharges
  • Thin body design for optimized balance
  • Anti-vibration side handle
  • 100% tool-free accessory changes and guard installations and adjustments
  • Length: 15"
  • Weight: 5.8 lbs
  • Speed: 8,500 RPM
  • Arbor size: 5/8"
  • Tool warranty: 5 years


  • Tool only (batteries and charger sold separately)
  • Flange nuts
  • Wheel guard
  • Spanner wrench

Additional information

Weight 6 lbs
Brand Name

18V Power Tools

2 reviews for Milwaukee 2780-20 M18 Fuel 4-1/2″ / 5″ Grinder w/ Paddle Switch

  1. Rick Hyne

    I was doing some demolition work cutting rebar on a JLG and needed a safer tool other than a gas operated cutoff saw. This tool fit the bill. It took a little longer, and went through disks, but the battery stayed strong and that depends on how much leverage you are applying.

  2. Robert A. Gagnon

    Great tool, as powerful as my plugged unit

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