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Alpha Tools PSG-125 Pneumatic Grinder 5" 5/8"-11 - PSG-125

Alpha Tools PSG-125 Pneumatic Grinder 5" 5/8"-11 - PSG-125

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Alpha Tools PSG-125 Pneumatic Grinder 5" 5/8"-11 - PSG-125

Alpha Tools PSG-125 Pneumatic Grinder 5" 5/8"-11

Alpha Professional Tools is excited to announce its latest performance tool with the PSG-125 5” Pneumatic Grinder. This industrial quality grinder has a powerful 1.4 HP motor with a speed control governor. It is compact and has an ergonomic aluminum body, a reversible safety lever throttle, and two auxiliary handle positions. Its adjustable rotating exhaust and built-in oil port make this tool great for any environment! A wet-cutting kit and several specialty kits for various applications are also available.

Features
  • Powerful 1.4 HP Motor with Speed Control Governor
  • Compact Ergonomic Aluminum Body
  • Reversible Safety Lever Throttle
  • Kink-Free Air Hose for Easy Maneuverability and Reducing Operator Fatigue
  • Two Auxiliary Handle Positions
  • Built-in Oil Port for Easy Maintenance
  • Adjustable Rotating Exhaust
  • 2,000 Hour Duty Cycle
  • Wet Cutting Kit Available (sold separately)
Included
  • Blade Safety Guard
  • Lock Nut with 7/8" Arbor
  • Inner Flange
  • Side Handle
  • Hex Wrench (1/4")
  • Pin Wrench
  • Double End Wrench (1" / 32mm)
  • Handle Bracket
  • Washer and Seal Set
  • Screw
  • Rust Inhibitor Oil (8oz / 237ml) (AIR-008)
  • Air Hose Assembly (15ft / 4.5m)
Specifications
Air Pressure 90 PSI (6.2 Bar)
Air Consumption Max 33 CFM (934L/min)
No Load Speed 12,000 RPM
Weight 4.6 lbs (2.1 kgs)
Length 11-3/4” (298mm)
Air Inlet 3/8” NPSM
Spindle 5/8”-11
Maximum disc capacity 5” x 1/4” x 7/8”
Max. HP 1.4 HP
What Our Experts Think
  • Powerful Pneumatic Performance: Air-powered for consistent, high-torque grinding without overheating.
  • Precision Grinding & Shaping: Ideal for stone, concrete, and hard surfaces, delivering smooth and accurate results.
  • Lightweight & Ergonomic: Designed for comfortable handling and reduced operator fatigue during extended use.
  • Durable Construction: Built to withstand tough job site conditions for long-lasting performance.
  • Versatile Compatibility: 5" grinding capacity with a standard 5/8"-11 spindle for use with a variety of grinding wheels.
  • Dust-Resistant Design: Perfect for wet and dry applications, minimizing airborne dust for a cleaner workspace.
Q&A

Q: What is the Alpha Tools PSG-125 Pneumatic Grinder - 5" 5/8"-11?
A: The Alpha PSG-125 is a high-performance 5-inch pneumatic grinder designed for precision grinding, shaping, and material removal on stone, concrete, and other hard surfaces.

Q: Why choose this pneumatic grinder?
A: It delivers powerful, consistent performance with minimal vibration, making it ideal for professional stone fabricators and contractors.

Q: What materials can it be used on?
A: This grinder is perfect for granite, quartz, marble, concrete, and engineered stone applications.

Q: Does it require an air compressor?
A: Yes, it operates using compressed air, ensuring a reliable and efficient power source without the need for electricity.

Maintenance Tips
  • Clean After Each Use: Wipe down the grinder to remove dust, debris, and residue. Use compressed air to clean internal components.
  • Lubricate Regularly: Apply pneumatic tool oil to the air inlet before and after use to keep internal parts running smoothly.
  • Inspect the Grinding Disc: Check for cracks, uneven wear, or dullness. Replace if damaged to ensure safe and effective grinding.
  • Check Air Supply: Ensure the compressor provides the correct PSI and CFM for optimal performance. Drain moisture from the air lines regularly.
  • Secure Fasteners: Periodically tighten screws, bolts, and disc attachments to prevent loosening during operation.
  • Monitor Air Hoses: Inspect hoses for leaks, cracks, or kinks. Replace any damaged hoses to maintain steady airflow.
  • Use Proper Grinding Pressure: Let the tool do the workβ€”excessive force can cause overheating and premature wear.