Description
Variable Speed Floor Grinding & Polishing Machine for Stone and Concrete
The Achilli LM30-VE is a professional single-phase floor grinding and polishing machine built for marble, terrazzo, concrete, granite, and natural stone surfaces. Where fixed-speed grinders force you to compromise between material types, the LM30-VE's frequency inverter-driven motor gives you four discrete speed settings — 150 to 527 RPM — so you can match machine performance to the material and finish you're working toward.
The 300 mm plate accepts prismatic, Frankfurt, and comma tooling systems, making it compatible with the abrasive systems already in your shop. An eccentric wheel axis allows machine level adjustment on uneven surfaces, and pivoting wheels with easy-grip handles keep it maneuverable across large floor areas. Available in 3 HP and 4 HP single-phase configurations to match your power requirements.
Key Features & Benefits
Frequency Inverter-Driven Variable Speed Motor
The motor is driven by a frequency inverter rather than a simple speed switch — this improves torque control, efficiency, and machine output consistency across all four speed settings. Better torque at low RPM means more effective grinding on hard stone without stalling.
Four Speed Settings for Material Versatility
150, 351, 439, and 527 RPM — slow speeds for aggressive grinding on hard granite and concrete, higher speeds for polishing and finishing on marble and terrazzo. One machine covers the full workflow.
Multi-System Abrasive Plate Compatibility
Compatible with prismatic, Frankfurt, and comma plate systems. Works with the tooling you already own — no proprietary abrasive lock-in.
Eccentric Wheel Axis Level Adjustment
Compensates for uneven floor surfaces without shimming or manual adjustment — keeps the plate flat and the grind consistent across irregular substrates.
Compact Maneuverable Design
Pivoting wheels and easy-grip handles make it practical to work across large floor areas without fatigue. Aluminum water tank with epoxy powder coating keeps weight down and corrosion resistance up.
Single-Phase Power — No 3-Phase Required
Runs on standard 230V single-phase supply — no special electrical infrastructure needed. Available in 3 HP and 4 HP to match your site's power capacity.
Technical Specifications
| Specification | Detail |
|---|---|
| Motor Power | 2.2 kW (3 HP) or 3 kW (4 HP) |
| Voltage | 230V, single-phase, 50/60 Hz |
| Drive System | Frequency inverter |
| Speed 1 | 150 RPM |
| Speed 2 | 351 RPM |
| Speed 3 | 439 RPM |
| Speed 4 | 527 RPM |
| Plate Diameter | 300 mm (11.8") |
| Plate Compatibility | Prismatic, Frankfurt, Comma |
| Water Tank | Aluminum, epoxy powder coated |
| SKU | PALM30CEF03 |
| Brand | Achilli |
Available Configurations
- LM30-VE – 1 Phase (230V, 3 HP) – Frankfurt Plate
- LM30-VE – 1 Phase (230V, 4 HP) – Frankfurt Plate
Optional Accessories
- Planetary Head (300 mm / 11.8") — improved performance on granite and hard stone
- Bush-Hammering Plate — surface texturing in different grits
- Single Head Driving Plate (430 mm / 17") — for single-head tooling applications
- Extra Weight — increases grinding pressure for more aggressive material removal
Compatible Materials
- Marble
- Granite
- Terrazzo
- Concrete
- Natural stone floors
Common Applications
- Floor grinding and surface preparation on stone and concrete
- Marble and terrazzo polishing and restoration
- Granite floor finishing
- Concrete surface grinding before coating or sealing
- Bush-hammering and surface texturing (with optional plate)
Ideal For
- Stone restoration contractors working on marble and terrazzo floors
- Concrete grinding and surface prep professionals
- Fabrication shops needing a versatile single-phase floor grinder
- Operations requiring Frankfurt or prismatic tooling compatibility
Frequently Asked Questions
What is the difference between the 3 HP and 4 HP versions?
Both run on 230V single-phase. The 4 HP version provides more torque for aggressive grinding on harder materials like granite and concrete. Choose 3 HP for lighter restoration work on marble and terrazzo; 4 HP for heavier material removal applications.
What abrasive systems is it compatible with?
The LM30-VE accepts prismatic, Frankfurt, and comma plate systems — the three most common tooling standards in stone and concrete floor grinding.
Does it require 3-phase power?
No. Both configurations run on standard 230V single-phase supply, making it practical for sites without 3-phase electrical infrastructure.
What does the frequency inverter drive system do?
It improves torque control and efficiency compared to a simple speed switch — particularly at low RPM settings where consistent torque is critical for effective grinding on hard stone.
Can I use it for concrete as well as stone?
Yes. The variable speed range and multi-system plate compatibility make it suitable for concrete grinding and surface preparation as well as stone polishing and restoration.
What optional accessories are available?
Planetary head for hard stone, bush-hammering plate for surface texturing, single head driving plate (430 mm), and extra weight for increased grinding pressure.
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- Achilli ProEdge Portable Router — portable edge profiling router for stone fabrication
- Achilli AFR-A Motorized Bridge Saw — motorized bridge saw for stone and ceramic
- Achilli TOP Manual Working Center — manual working center for countertop fabrication
- Achilli SC500 Slab Cart — slab transport and handling cart
Further Reading
- Stone Floor Grinding & Polishing: A Complete Professional Guide — grit sequences, speed settings, wet vs dry grinding, machine setup, and troubleshooting for marble, granite, terrazzo & concrete