Lavina L30S7 Electric Concrete Floor Grinder

The Most Powerful Electric Grinder Lavina Makes

The Lavina® L30S7 is the flagship of the electric S7 line — a 15 HP planetary grinder with a 30.8-inch work path, built to deliver maximum production on large commercial and industrial floors without a drop of fuel. It brings the coverage and muscle you’d expect from a big propane machine, but runs on electric power — which makes it the machine of choice for job sites where propane isn’t allowed, like occupied buildings, schools, hospitals, food facilities, and enclosed spaces where emissions are a concern.

With a wide 30″ grinding path, high grinding pressure (up to 619 lbs with integrated weights), and a powerful three-phase motor, the L30S7 moves through large-area surface prep, coating removal, and polishing with ease. For contractors who need serious production capacity indoors — quietly and emission-free — this is the top of the Lavina electric lineup.

Ready to put the L30S7 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 for longer belt life and less maintenance

New Frame Design

Better control, easier tool changes, and less vibration:

• 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

• Grinder Series: S7
• Grinder Type: Planetary
• Motor Power: 15 HP / 11 kW
• Voltage: 3 phase, 200–240V, 45 Amp max
• Working Width: 30.8 in / 783 mm
• Weight: 998 lbs / 453 kg
• Grinding Pressure: 460–619 lbs / 209–289 kg (integrated weights, 4 positions)
• Grinding Heads: 3 × 13.2 in / 335 mm (left rotation)
• Tool Holder RPM: 400–765
• Vacuum Hose Port: Camlock E300
• Transport wheel: optional accessory

Also available in other voltages:

• High-voltage: 3 phase, 400–480V, 30 Amp — model L30HVS7
• European: 3 phase, 380–400V, 30 Amp — model L30ES7

What the L30S7 Is For

• Large commercial and industrial floor prep on electric power
• Job sites where propane is not allowed — occupied buildings, schools, hospitals, food and enclosed facilities
• High-production grinding and polishing
• Coating, epoxy, and adhesive removal at scale
• Quiet, emission-free operation indoors
• Wet or dry operation

Frequently Asked Questions

What is the Lavina L30S7 best for? Maximum-production floor prep and polishing on large indoor floors, on electric power. With 15 HP and a 30.8″ work path, it’s the most powerful electric grinder in the Lavina line — ideal for big jobs where you want propane-level coverage without the emissions.

Why choose electric over propane at this size? The L30S7 is purpose-built for job sites where propane isn’t allowed — occupied buildings, schools, hospitals, food-processing plants, and enclosed spaces. You get big-floor production capacity with no engine exhaust and quieter operation.

What power does it need? Three-phase, 200–240V, 45 Amp max in the standard model. It’s also offered in a high-voltage version (400–480V, model L30HVS7) and a European version (380–400V, model L30ES7).

How wide is the grinding path? 30.8 inches (783 mm) — the widest in the Lavina electric lineup, for maximum coverage on large floors.

How much grinding pressure does it have? 460–619 lbs using the integrated weights across four positions — plenty of down-pressure for aggressive surface prep and coating removal.

How does it compare to the propane L30GS7? Both have a ~30″ work path for big-floor production. The L30S7 is electric — quiet, emission-free, and ideal indoors or where propane is prohibited. The propane L30GS7 is cord-free and runs anywhere, ideal where power isn’t available. We’ll help you choose based on your typical job sites.

How does it compare to the smaller electric L25S7? The L25S7 is a 10 HP, 26.5″ machine. The L30S7 steps up to 15 HP and a 30.8″ path with more grinding pressure — the choice when you need maximum electric production capacity.

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

WWhy Buy Your Lavina from Substrate Technology?

When you buy the L30S7 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 L30S7
• Dust collectors — pair with the right collector for silica-safe grinding on a machine this size

Order Your Lavina L30S7 Today

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

Item #303601030 (L30S7 230 Volt) | #303601031 (L30HVS7 480 Volt)