Alpha Tools PSP-158 Pneumatic Polisher - PSP-158

Alpha Tools PSP-158 Pneumatic Polisher - PSP-158

Alpha is excited to introduce its new flagship pneumatic polisher, the PSP-158. With its power and precision speed control, it will modernize the polishing operation.

Features

• New Flagship Polisher from Alpha
• High-Performance, Pneumatic Polisher
• Powerful New Motor for Demanding Applications
• Spindle Lock for Easy/Fast Tool Changes
• Comes With 30' Kink-Free Twin-Air/Water Hose for Better Maneuverability
• All-Weather Hoses with Flexibility Down To -40°F Or +140°F
• Quarter-Turn Switches for Precise Control
• Central Water-Feed System Delivers Ample Water Regardless of Position
• No-Load RPM- 5,500
• Silicon Gear Head Cover Provides Cushion and Keeps Hands Warm
  

Included

• Air/Water Twin Hose Assembly (30ft / 9.1m)
• Rust Inhibitor Oil (3.4oz / 100ml)
• Exhaust Hose with Clamp
• Water Quick Coupler w/ Shut Off Valve
• Toolbox

Specifications   

What our Experts Think

• Industrial-grade pneumatic performance: Alpha Tools PSP-158 is a high-output air-powered wet polisher designed for stone fabrication, shaping, and finishing work
• Strong, consistent speed control: Runs at ~5,500 RPM no-load speed, delivering stable polishing power for granite, marble, quartz, and engineered stone
• Built for wet stone finishing: Integrated central water-feed system ensures continuous cooling and dust reduction during polishing and profiling
• Jobsite-ready durability: Lightweight (~3 lbs) but rugged design for extended professional use in fabrication shops and on-site work
• High-efficiency air system: Requires ~21 CFM at 90 PSI, making it a true shop-air tool for professional compressors
• Ergonomic control design: Includes quarter-turn air/water valves and a spindle lock for fast accessory changes and precise control
• Complete professional kit: Typically supplied with 30 ft twin air/water hose, accessories, and a transport case for field mobility
• Best for: Stone fabricators, countertop installers, and contractors needing precision wet polishing and shaping on hard materials
• Key consideration: Requires air compressor setup (not electric), plus proper water handling and operator skill for best results

Q&A

Q: What is the Alpha PSP-158 Pneumatic Polisher?
A: It is a high-performance, air-powered wet polisher designed for professional stone fabrication, polishing, shaping, and finishing of granite, marble, quartz, and engineered stone.

Q: How does the PSP-158 work?
A: It runs on compressed air (about 90 PSI) and uses a water-fed system to cool the surface during polishing, reducing dust and improving finish quality.

Q: What is the RPM of this polisher?
A: The PSP-158 operates at up to 5,500 RPM (no-load speed) for fast and controlled polishing.

Q: What materials can it be used on?
A: It is designed for natural stone, granite, marble, quartz, porcelain, and engineered stone fabrication and finishing.

Q: Is it suitable for wet polishing?
A: Yes, it includes a central water-feed system that ensures consistent water flow for wet polishing applications and dust control.

Q: What makes this polisher professional-grade?
A: It features high air efficiency, precision quarter-turn controls, a spindle lock for fast tool changes, and a durable industrial build for job-site use.

Q: What is included with the tool?
A: It typically comes with a 30-ft twin air/water hose, quick-connect valve, exhaust hose, rust inhibitor oil, and a carrying toolbox.

Q: Is it heavy or easy to handle?
A: It is lightweight (about 3 lbs tool body), designed for better maneuverability and reduced operator fatigue.

Q: What is it mainly used for?
A: It is used for edge polishing, profiling, shaping, beveling, and finishing stone surfaces on countertops and slabs.

Maintenance Tips

• Flush water system after every use: Prevent slurry buildup and internal clogging
• Lubricate air inlet regularly: Keeps pneumatic motor running smoothly
• Inspect hoses for cracks/leaks: Ensures stable air + water flow
• Clean spindle and attachments: Prevents dust affecting accessory fit
• Check air pressure (90 PSI): Incorrect pressure reduces performance or damages motor
• Store dry in case: Protects from corrosion and internal rust
• Keep exhaust port clean: Maintains cooling efficiency during long polishing sessions
• Replace worn seals/O-rings: Prevents air loss and performance drop