Lavina L25GS7 & L25GKS7 Propane Concrete Floor Grinder

A Mid-Size Propane Grinder — Your Choice of Engine

The Lavina® L25 is the mid-size propane grinder in the Series 7 lineup — a 26.5-inch planetary machine built for high productivity on grinding and polishing jobs across large commercial floors. With the cord-free mobility of propane and the muscle to power through aggressive surface prep, it covers more ground than a 20″ machine while staying more maneuverable than a full 30″. For contractors who want mid-size coverage and strong production, the L25 is the sweet spot of the propane lineup.

Best of all, you choose the engine:

• L25GS7 — Kawasaki FX600V, 19 HP — proven, reliable, and economical
• L25GKS7 — Kohler PCV740, 24 HP — extra torque and power for demanding production work

Both are the same machine in every other respect — the same 26.5″ work path, the same S7 frame, and the same sealed grinding head. The only difference is the engine, so you can match the power plant to your work and your budget.

Ready to put the L25GS7 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

What the L25 Is For

• Mid-to-large commercial floor prep and polishing
• Grinding, coating removal, and polishing on open floors
• Propane power for job sites without electrical supply, or where cord-free mobility matters
• High-production work — choose the 24 HP Kohler for maximum torque
• Wet or dry operation

Specifications

• Grinder Series: S7
• Grinder Type: Planetary
• Engine — L25GS7: Kawasaki FX600V, 19 HP
• Engine — L25GKS7: Kohler PCV740, 24 HP
• Engine RPM: 2000–3600
• Tool Holder RPM: 607–1100
• Weight: 901 lbs / 409 kg
• Grinding Pressure: 363–549 lbs / 165–249 kg (integrated weights, 4 positions)
• Working Width: 26.5 in / 673 mm
• Grinding Heads: 3 × 9 in / 225 mm (left rotation)
• Vacuum Hose Port: Camlock E250
• Propane Tank: 20 lbs (vapor only — do not fill over 80%)
• Transport wheel: optional accessory

Frequently Asked Questions

What’s the difference between the L25GS7 and the L25GKS7? They’re the same machine with different engines. The L25GS7 has a 19 HP Kawasaki FX600V (proven and economical); the L25GKS7 has a 24 HP Kohler PCV740 (more torque and power for demanding jobs). The 26.5″ work path, frame, grinding head, and all other specs are identical — so it comes down to how much power you want and your budget.

Which engine should I choose? For most jobs, the Kawasaki (L25GS7) delivers reliable, economical performance. If you run heavy production or want extra torque for aggressive grinding, step up to the Kohler (L25GKS7). Not sure? Call us and we’ll help you decide based on your typical work.

What is the Lavina L25 best for? Mid-to-large commercial floor prep and polishing — grinding, coating removal, and polishing on open floors where you want cord-free propane power and strong production in a maneuverable 26.5″ 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 does it compare to the L20GS7 and L30GS7? The L20GS7 is the compact 20″ propane machine; the L30GS7 is the full-size 30″ for maximum production. The L25 sits in between at 26.5″ — more coverage and power than the 20″, more maneuverable than the 30″.

Does it work wet or dry? Yes — it has a water system for wet grinding and polishing and can run dry with proper dust collection.

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 L25 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 engine, 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 L25
• Dust collectors — pair with the right collector for silica-safe grinding on a machine this size

Order Your Lavina L25 Today

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

Item #303025001 (L325GS7 with Kawasaki motor) | #303025002 (L30GKS7 with Kohler motor)