MaxPro Pneumatic Wet Grinder

The 4" MaxPro Pneumatic Wet Grinder is a heavy-duty rear exhaust air polisher engineered for powerful wet sanding and polishing of granite, marble, and other natural stone surfaces. Built for durability and consistent performance, the MaxPro delivers strong torque while maintaining a balanced, ergonomic design to help reduce operator fatigue.

Designed with a side handle and protective head cover, this water-feed air grinder is ideal for trim work, edge polishing, and general fabrication applications in both shop and jobsite environments.

Technical Specifications

• Backing Pad: 4"
• Sanding Disc: 4"
• Spindle Size: 5/8"-11
• Max No-Load Speed: 5,000 RPM
• Average Air Consumption: 5.75 CFM @ 90 PSI
• Operating Pressure: 90 PSI
• Air Inlet: 1/4"
• Recommended Air Hose (ID): 3/8"
• Exhaust: Rear Exhaust

Intended Use

Designed for wet sanding and polishing of marble, granite, and other stone materials. Ideal for edge work, trim applications, and general fabrication polishing.

Care & Maintenance

Proper maintenance is essential to maximize tool life and maintain warranty coverage.

• Lubricate daily (or before each use) with air tool oil.
• Add a few drops of oil into the air inlet before operation.
• After use, disconnect the air supply and oil again before storage.
• Run the tool briefly after oiling to distribute lubrication evenly.
• Do not operate above 90 PSI.
• Store in a dry environment to prevent internal rusting.

Warranty

• 10 Days: Tool Replacement
• 90 Days: Warranty Repair
• After 90 Days: Repair at Cost

Failure to properly maintain the machine will void the warranty. Always grease properly and follow operating guidelines. When sending in for repair, do not include hoses or attachments and clearly indicate the issue with the machine.

Key Benefits

• Heavy-duty construction for professional fabrication
• Powerful 5,000 RPM performance
• Water-feed design for wet polishing applications
• Ergonomic design to reduce operator fatigue
• Reliable shop and jobsite durability