Here is another multi-surface planetary concrete floor polish that works faster like no other. Meet OF20S-H Concrete Floor Grinder. The high speed OF20S-H machine operates at 1,000 RPM, making it the ideal concrete floor grinder, capable of production rates as high as 500 square feet per hour.
The OF20S-H operates on 208-240V, 1 Phase, and is powerful enough for professional users yet simple enough for almost anyone to operate and maintain.
The OF20S-H also incorporates Onfloor’s patented tool attachment system 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
Features
- 20” Cutting Path: More production in less time.
- High-Speed Grinding: Grind Concrete, Stone, Terrazzo, and more.
- Lightweight High Speed: Faster operation and easy mobilization.
- Up To 282 lbs. Grinding Pressure: Increases productivity with more grinding pressure.
- Removable Handle: Reduces overall height for mobilization.
- Self-Maintenance Platform: Replace belts and bearings in minutes, not hours.
- Wet/Dry Operation: The machine operates dry with a dust collector or wets with water.
- Patented Flexible Tool Plates: Follow the contour of the floor for faster production.
- Patented Triple Belt Planetary: Creates more torque with less power.

Model |
OF20S-H |
Motor/Power |
5HP/208-240V 50/60HZ |
Full Load Amperage |
23 |
Tool Speed |
1250 |
Cutting Width |
20" |
Vacuum Port |
1.5" or 2" |
Minimum CFM |
180 |
Weight |
190 |
Grinding Pressure |
170 |
Optional Weight |
28 LBS (4max) |
Shipping Dimension |
L: 31" x W:23" x H: 48" |
Shipping Weight |
210 lbs |
- OF20 KEVLAR BELTS 210L 3/SET (ORIGINAL)
- OF20 KEVLAR BELTS 640 3/SET (HEAVY DUTY)
- GROMMET WHITE 24/SET
- OF20 DUST SKIRT
- ACCESSORY PINS 12/SET
- BEARING, PULLEY, TRIPLE LIP SEAL, 1.57" OD x .47" ID
- SMALL BEARING SPACER
- BEARING, BOWL, TRIPLE LIP SEAL, 6009-2RS
- SPACER, BOWL BEARING
- 28lb WEIGHT FOR OF20
- HI 61 TOOTH PULLEY CLOSEST TO THE DUST COVER (HEAVY DUTY)
- MID 61 TOOTH PULLEY (HEAVY DUTY)
- LOW 61 TOOTH PULLEY CLOSEST TO THE INNER BOWL (HEAVY DUTY)
- CENTER 22 TOOTH PULLEY (HEAVY DUTY)
- 8" BASEPLATE
- TOGGLE SWITCH - 20SH
- TOGGLE SWITCH - 16SL, 16SH, 20SL
ORDER PROCESSING
Pending unanticipated changes in product availability, payment, and warehouse processing time, orders received by 12:00 pm CST will be processed within the next business day and shipped within 2–5 business days. Orders placed on the weekend or on a holiday will begin payment processing the next business day.
If not all items in your order are available, a customer service representative will call you to confirm whether you would like a partial shipment or prefer to wait until all items are ready. Onfloor.com will not ship your order until confirmation is received.
If you need to expedite your order processing, please contact us: 1-877-356-6703.
- Choosing a selection results in a full page refresh.
- Opens in a new window.