Lavina L20GS7 Propane Concrete Floor Grinder

A Compact 20″ Propane Grinder Built for Big Jobs

The Lavina® L20GS7 brings the power and versatility of the Lavina S7 series into a compact 20-inch footprint. As a propane-powered planetary grinder and polisher, it gives you full, cord-free mobility — ideal for large commercial floors, open warehouse spaces, and job sites where running power isn’t practical. You get the production capacity to grind, remove coatings, and polish across big areas, with a machine that’s still maneuverable enough to handle the real-world layout of a working floor.

For contractors who want the latest S7 upgrades in a more compact machine, the L20GS7 delivers superior performance, longer service life, and easier day-to-day operation.

Ready to put the L20GS7 to work? Call for pricing and availability, or request a quote — and you’ll talk to a real surface-prep expert, not a call center.

Speak directly with a surface preparation expert — fast answers and real recommendations.

New to grinders? Read our guide on choosing the right one!

New Sealed & Dust-Proof Grinding Head

Longer service life and less maintenance:

• Completely redesigned chain-driven planetary drive
• New stronger timing belt
• Upgraded shafts, seals, and bearings
• New lighter timing pulleys for better power transmission
• New 2-piece aluminum main belt housing with belt inspection cover

NEW FRAME DESIGN

• Better control, easier tool changes, and less vibrations.
• New weights for faster position change
• Redesigned frame allowing easier tool changes
• Ergonomic handle design for faster adjustability and more positions
• Rubber bushing used at head attachment points for less vibrations for user
• Working width: 20 in. (71cm)

SPECIFICATIONS

• Grinder Series: S7
• Grinder Type: Planetary
• Engine: Kawasaki FS481V, 603 cc (18 hp / 13 kW)
• Engine RPM: 2000-3600
• Weight of Machine: 573 lbs
• Grinding Pressure: 286-363 lbs
• Tool Holder Diameter: 3 x 9 in
• Head Rotation: Counter-clockwise / left rotation
• Working Width: 20 in
• Propane Tank Capacity: 20 lbs
• Water Tank Capacity: 2.1 gal

What the L20GS7 Is For

• Large commercial floor preparation — warehouses, retail, industrial spaces
• Concrete grinding and polishing on big, open floors
• Coating and adhesive removal
• Propane power for job sites without adequate electrical supply, or where cord-free mobility matters
• Wet or dry operation with the built-in water tank

Frequently Asked Questions

What is the Lavina L20GS7 best for? Large commercial floor prep and polishing — it’s a 20″ propane planetary grinder built for grinding, coating removal, and polishing on big floors where you want a cord-free, propane-powered machine.

Why propane instead of electric? Propane gives you full mobility with no cords and no need for a power supply on site — ideal for large open areas and locations without adequate electrical service.

How wide is the grinding path? 20 inches (71 cm), with a compact footprint that balances coverage and maneuverability.

What engine does it have? An 18 HP Kawasaki FS481V (603 cc).

What’s new about the S7 series? A sealed, dust-proof grinding head for longer service life, a redesigned frame for easier tool changes and less vibration, and an upgraded chain-driven planetary drive.

Does it work wet or dry? It has a 2.1-gallon water tank for wet grinding and polishing, and can run dry with proper dust collection.

What tooling does it use? Lavina-compatible planetary tooling. We carry both OEM Lavina tooling and non-OEM options — see our Lavina grinder accessories and planetary tooling.

What tooling does it use? Lavina-compatible planetary tooling. We carry both OEM Lavina tooling and non-OEM options — see our Lavina tooling and accessories.

Why Buy Your Lavina from Substrate Technology?

When you buy the L20GS7 from us, you’re getting more than a machine. Our technicians are Lavina-certified, we stock parts and tooling, and we back every machine with real surface-prep expertise — so you have genuine support long after the sale. We’ll help you choose the right machine, the right tooling, and the right dust collection for your work, and we’re here when you need parts or service. You’ll always talk to a real expert, not a call center.

Complete Your Setup

• Lavina grinder accessories — OEM and non-OEM options
• Planetary tooling — to fit the L20GS7
• Dust collectors — pair with the right collector for silica-safe grinding

Order Your Lavina Grinder Today!!

Call (815) 941-4800 x 1 or fill out our contact form. 

Item#:
303603020