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OF20S-L120 | Planetary 20" | Single Speed Low





The Onfloor OF20S-L is a multi-surface planetary concrete floor grinder, exterior wood deck sander, interior wood floor sander that is equipped with Onfloor’s patented triple-belt technology. The OF20S-L operates on 120V and is powerful enough for professional users yet simple enough for almost anyone to operate and maintain. The low tool speed (500 rpm) of the OF20S-L makes it an ideal multi-surface machine for low speed applications such as wood floors and decks. The OF20S-L also incorporates Onfloor’s patented tool attachment system that is known for being the fastest tool change in the industry.


Tooling packages are available for a multitude of applications including:

Concrete Surface Preparation | Epoxy Removal | Mastic/Glue Removal 
Wood Floor Sanding/Refinishing | Stone Polishing | Wood Deck Restoration

Model OF20S-L120
Motor/Power  2 HP/120V 50/60HZ
Full Load Amperage 16
Tool Speed 500 RPM
Cutting Width 20"
Weight 190 LBS
Grinding Pressure 170 LBS
Optional Weight 28 LBS (1 max)
Shipping Dimension L: 30" x W:24" x H: 42"
Shipping Weight 210 LBS
  • 20” Cutting Path
    • More production in less time-
  • Multi-Surface Capability
    • Grind Concrete, Stone, Terrazzo, Wood Floors, Wood Decks and more-
  • Lightweight High Speed
    • Faster operation and easy mobilization-
  • Up To 220 lbs. Grinding Pressure
    • Increases productivity with more grinding pressure-
  • Patented Triple Belt Planetary
    • Creates more torque with less power-
  • Patented Flexible Tool Plates
    • Follow the contour of the floor for faster production-
  • Removable Handle
    • Reduces overall height for mobilization-
  • Self-Maintenance Platform
    • Replace belts and bearings in minutes not hours-
  • Wet/Dry Operation
    • Machine operates dry with dust collector or wet with water-