Lavina L25S7 Electric Concrete Floor Grinder

The Largest Electric Grinder in the Lavina S7 Line

The Lavina® L25S7 is the big-production electric grinder in the Series 7 lineup — a 10 HP planetary machine with a 26.5-inch working width, built to cover serious square footage on large commercial and industrial floors without leaving the world of electric power. It delivers the production capacity of a propane machine with the quiet, emission-free operation of an electric, making it ideal for big indoor projects where you have the power but don’t want engine exhaust.

With high grinding pressure (up to 514 lbs with integrated weights), variable tool-holder speed (400–1100 RPM), and availability in both single-phase and three-phase (200–240V), the L25S7 moves confidently from aggressive surface prep and coating removal to fine polishing. For contractors tackling large warehouse, retail, and institutional floors indoors, it’s the most productive electric grinder Lavina makes.

Ready to put the L25S7 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 with no chain tensioner
• 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 for longer belt life and less maintenance

New Frame Design

The redesigned frame and weights make tool changes easier than ever. The grinding head is isolated with rubber bushings to reduce vibration, and a new, intuitive handlebar gives faster adjustability and more positions.

• New weights for faster position changes
• Redesigned frame allowing easier tool changes
• New ergonomic handle design for faster adjustability and more positions
• Rubber bushings at head attachment points for reduced operator vibration
• Water tank cap
• Internal storage compartment

SPECIFICATIONS

• Power: 10hp / 7.5kw
• Voltage (50-60 Hz): 1 or 3 phase, 200-240V
• Amperage (max): 30 Amp
• Weight of Machine: 871 lbs / 395 kg
• Grinding Pressure integrated weights w/4 pos: 329-514 lbs / 149-233 kg
• Tool Holder RPM: 400-1100 rpm
• Working Width: 26.5 in / 673 mm
• Tool Holders (Left Rotation): 3×9 in / 3×225 mm
• Vacuum Hose Port: Camlock E250
• Water Feed (tank or hose connection): gravity-fed
• Water Tank: 5.2 gal / 20 L
• Cable Length: 57 ft / 17.4 m
• Machine Size: 84x24x49 in
• Grinder Series: S7
• Grinder Type: Planetary

What the L25S7 Is For

• Large commercial and industrial floor prep — indoors, on electric power
• High-production grinding and polishing
• Coating, epoxy, and adhesive removal at scale
• Quiet, emission-free operation for occupied or enclosed buildings
• Both single- and three-phase power — match it to your site
• Wet or dry operation with the 5.2-gallon water tank

Frequently Asked Questions

What is the Lavina L25S7 best for? Large indoor floor prep and polishing on electric power — warehouses, retail, and institutional floors where you want big production capacity without engine emissions. With a 26.5″ working width and 10 HP, it’s the largest electric grinder in the Lavina S7 line.

What power does it need? 200–240V, up to 30A, available in single-phase or three-phase — so you can match it to the power available on your job site.

How wide is the grinding path? 26.5 inches (673 mm) — significantly more coverage than the 20″ electric machines, for faster work on big floors.

Does it have variable speed? Yes — tool-holder speed adjusts from 400 to 1100 RPM, with up to 514 lbs of grinding pressure using the integrated weights.

How does it compare to the 20″ electric L20S7? The L20S7 is a 7.5 HP, 20″ machine for medium floors. The L25S7 steps up to 10 HP and a 26.5″ path with much higher grinding pressure — built for large, high-production indoor jobs.

Should I get the electric L25S7 or a propane grinder? The L25S7 gives you big-floor production on electric power — quiet and emission-free, ideal indoors where you have adequate power. If you need cord-free mobility or run where power isn’t available, consider the propane L30GS7. We’ll help you choose based on your typical jobs.

What tooling does it use? Lavina-compatible planetary tooling. See our Lavina grinder accessories and planetary tooling.

Why Buy Your Lavina from Substrate Technology?

When you buy the L25S7 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 L25S7
• Dust collectors — pair with the right collector for silica-safe grinding on a machine this size

Order Your Lavina L25S7 Today

Call (815) 941-4800 x 1 or fill out our contact form. See all our Lavina grinders and planetary floor grinders.

Item #303601025