STI Lavina L20GS7 Propane Grinder
STI Lavina L20GS7 Propane Grinder is a compact, high-performance planetary floor grinder designed to deliver professional concrete grinding, surface preparation, and polishing with the convenience of propane power. As the newest addition to the Lavina S7 lineup, it combines a 20-inch working width with the latest Series 7 upgrades, including a completely redesigned chain-driven planetary drive, a stronger timing belt, upgraded shafts, seals, and bearings, lighter timing pulleys for improved power transmission, and a two-piece aluminum main belt housing with a belt inspection cover for longer service life and reduced maintenance. Powered by an 18 HP (13 kW) Kawasaki FS481V 603 cc propane engine operating at 2,000–3,600 RPM, the machine features three 9-inch counter-clockwise-rotating tool holders and adjustable grinding pressure ranging from 286 to 363 lbs for consistent, professional results.
Designed for maximum operator comfort and productivity, the L20GS7 features a redesigned frame for faster tool changes, a new adjustable weight system for quick pressure adjustments, an ergonomic multi-position handle, and rubber bushings at the grinding head attachment points to significantly reduce vibration during operation. Weighing 573 lbs, this S7 Series grinder features a 20-lb propane tank capacity and a 2.1-gallon water tank, making it an ideal solution for contractors who require powerful, portable performance with the flexibility of propane operation for commercial and industrial flooring applications.
Lavina L20GS7 Propane Grinder Main Features
- 18 HP (13 kW) Kawasaki FS481V 603 cc propane engine
- 20″ working width
- Planetary grinding system
- Lavina S7 Series design
- Completely redesigned chain-driven planetary drive
- Stronger timing belt
- Upgraded shafts, seals, and bearings
- Lightweight timing pulleys for improved power transmission
- Two-piece aluminum belt housing with inspection cover
- Three 9″ counter-clockwise (left rotation) tool holders
- Adjustable grinding pressure: 286–363 lbs
- Redesigned frame for faster tool changes
- Adjustable weight system
- Ergonomic multi-position handle
- Rubber bushings reduce vibration
- 20 lb propane tank capacity
- 2.1-gallon water tank
- Compact footprint for easy maneuverability
STI Lavina L20GS7 Propane Grinder Specifications
| Property | Value |
|---|---|
| Grinder Series | S7 |
| Grinder Type | Planetary |
| Engine | Kawasaki FS481V |
| Engine Displacement | 603 cc |
| Engine Power | 18 HP (13 kW) |
| Engine Speed | 2,000–3,600 RPM |
| Working Width | 20 in |
| Tool Holder Diameter | 3 × 9 in |
| Head Rotation | Counter-clockwise (Left Rotation) |
| Machine Weight | 573 lbs |
| Grinding Pressure | 286–363 lbs |
| Propane Tank Capacity | 20 lbs |
| Water Tank Capacity | 2.1 gal |
Lavina L20GS7 Propane Grinder Video
Changing the Belt on the New 20″ Lavina S7 Grinders
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