Alpha PSG-658 Pneumatic Grinder – 6 in., 5/8 in.-11 Spindle, 8,500 RPM
Alpha PSG-658 Pneumatic Grinder – 6 in., 5/8 in.-11 Spindle, 8,500 RPM
The Alpha PSG-658 Pneumatic Grinder is a 6 in. pneumatic grinder for grinding and dressing stone rated to 8,500 RPM. It runs on compressed air rather than mains power, so there is no electric motor to fail in a wet shop.
It needs a compressed air supply — this is not a corded tool. Alpha AIR-008 Rust Inhibitor Oil protects the air motor from the moisture that compressed air and wet stone work both carry, and the Alpha Water Hose, 30 ft. x 1/4 in., is the replacement water line Alpha lists for its wet pneumatic tools.
Key Features
- 6 in. capacity
- 5/8 in.-11 spindle
- 8,500 RPM
- Pneumatic — runs on compressed air
Who Is This For?
Stone fabrication shops and countertop installers — an air-driven tool for a shop already running a compressor.
Frequently Asked Questions
What speed does it run?
Alpha rates the PSG-658 to 8,500 RPM.
What size tooling does it take?
6 in. — see the specification list above.
Does it need an electrical supply?
No. The tool is pneumatic and runs on compressed air.
How do I keep the air motor from rusting?
Alpha supplies AIR-008 Rust Inhibitor Oil for its pneumatic tools. Compressed air carries moisture and wet stone work adds more, so the oil lubricates the motor and inhibits corrosion.
What thread is the spindle?
5/8 in.-11, which takes standard backer pads, adapters and tooling.