STI Electric Concrete Floor Grinder 30″
STI Electric Concrete Floor Grinder 30″ is a professional-grade surface preparation and polishing machine built to maximize productivity on large commercial and industrial flooring projects. Equipped with a 30-inch grinding width and a powerful 30 HP (22 kW) WEG electric motor, available in 230V or 480V with single- or three-phase configurations, this grinder delivers exceptional torque and consistent performance for demanding concrete grinding, polishing, coating removal, and surface preparation applications. Its variable-speed drive, adjustable pocket-weight system, and integrated water tank allow operators to fine-tune grinding pressure and easily transition between wet and dry operation, while the four included tool plates deliver efficient multi-head grinding performance and support for six tools.
Designed for projects up to 10,000 sq ft (1,000 m²), the Prep/Master 3030 combines the production capacity of large floor grinders with a compact, maneuverable design that is easy to transport and operate on job sites. Measuring 86″ L × 30″ W × 52″ H and weighing approximately 1,338 lbs, it is ideal for concrete grinding and polishing, epoxy and coating removal, terrazzo finishing, warehouse and commercial floor preparation, adhesive and mastic removal, and stone and marble polishing. Offering lower emissions for indoor environments, eliminating propane fuel handling, and maintaining reliable power in controlled conditions, the Prep/Master 3030 is fully compatible with STI tooling systems and provides the productivity, durability, and finishing quality professional contractors require.
Applications
- Concrete grinding and polishing
- Epoxy and coating removal
- Terrazzo surface finishing
- Warehouse and commercial floor preparation
- Adhesive and mastic removal
- Stone polishing
- Marble polishing
Electric Concrete Floor Grinder 30″ Main Features
- 30″ grinding width for maximum production
- Powerful 30 HP (22 kW) WEG electric motor
- Available in 230V or 480V
- Single-phase or three-phase configurations
- Variable speed drive
- Adjustable pocket weight system
- Built-in water tank for wet or dry operation
- Includes 4 tool plates
- Supports 6 grinding tools
- Compatible with STI tooling systems
- Designed for projects up to 10,000 sq ft (1,000 m²)
- Lower emissions for indoor applications
- Easy to transport and maneuver
- Ideal for concrete, terrazzo, stone, and marble surfaces
STI Electric Concrete Floor Grinder 30″ Specifications
| Property | Value |
|---|---|
| Model | Prep/Master 3030 |
| Working Width | 30″ (76 cm) |
| Motor | WEG 30 HP (22 kW) Electric |
| Voltage | 230V or 480V |
| Power Configuration | Single Phase or Three Phase |
| Variable Speed | Yes |
| Tool Plates | 4 |
| Total Tool Capacity | 6 Tools |
| Water Tank | Integrated |
| Operation | Wet or Dry |
| Adjustable Weight System | Yes |
| Recommended Project Size | Up to 10,000 sq ft (1,000 m²) |
| Dimensions | 86″ L × 30″ W × 52″ H |
| Weight | Approx. 1,338 lbs (606 kg) |
| Compatible Tooling | STI Tooling Systems |
Electric Concrete Floor Grinder 30″ Video
Learn How The Prep Master 3030 Can Help All Surface Prep Contractors
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