The Alpha PSP-158/114 Pneumatic Polisher is a pneumatic polisher engineered for wet polishing and grinding of stone, concrete, and masonry surfaces. The tool operates using compressed air and incorporates a central water-feed system that delivers consistent water flow directly to the polishing interface.
Designed as Alpha’s flagship pneumatic platform, the tool uses a powerful motor and precision control components to support demanding surface finishing tasks. It operates at a maximum no-load speed of 5,500 RPM while consuming 21 CFM at 90 PSI, providing controlled material removal and surface refinement.
Two spindle configurations are available to support common polishing accessories: a 5/8"-11 spindle on the PSP-158 model and an M14-2 spindle on the PSP-114 model. Lightweight construction and integrated ergonomic features support extended operation with reduced operator fatigue.
Key Features
- Pneumatic Drive System: Operates using compressed air for wet polishing and grinding.
- Central Water-Feed System: Delivers water directly to the polishing surface regardless of orientation.
- High-Performance Motor: Supports demanding surface finishing applications.
- Precision Speed Control: Quarter-turn switches allow controlled operation.
- Dual Spindle Options: Available with 5/8"-11 or M14-2 spindle.
- All-Weather Hose Assembly: Includes 30 ft twin air/water hose rated from -40°F to +140°F.
- Reusable Toolbox: Supplied for storage and transport.
Specifications
| Specification | Details |
|---|---|
| Models | PSP-158 / PSP-114 |
| Air Pressure | 90 PSI (6.2 Bar) |
| Air Consumption | 21 CFM (594 L/min) |
| No Load Speed | 5,500 RPM |
| Weight | 3 lbs (1.37 kg) |
| Spindle Options | 5/8"-11 or M14-2 |
| Max Horsepower | 0.70 HP |
Kit Includes
- Air/water twin hose assembly (30 ft)
- Rust inhibitor oil (3.4 oz)
- Exhaust hose with clamp
- Quick connect ball valve
- Reusable toolbox
This pneumatic polisher is used for wet surface finishing where consistent water delivery and controlled air-powered operation are required.