Chicago Pneumatic 6151939778 Air Disc Sander 14000 Rpm

Product Description

The CHICAGO PNEUMATIC 6151939778 is a pneumatic handheld disc sander designed for surface preparation, material removal, and finishing work across metal fabrication, automotive bodywork, and general industrial applications. Running at 14,000 RPM on a 90 psi air supply, it draws 21 CFM at full load and delivers 0.50 HP through a 7/16-20 spindle. The 1/4 inch air inlet connects to standard shop lines, and the tool accepts pad sizes of 3 inches, 4.5 inches, and 5.5 inches, giving technicians flexibility across disc diameters up to 5 inches. Journeymen fabricators, auto body technicians, and industrial maintenance trades are the primary users of this tool.

This sander is suited for both production and maintenance environments where a lightweight, air-powered sanding platform is needed. The multi-pad compatibility makes it adaptable to a range of disc sizes, allowing one tool to handle rough stock removal with a larger pad or detail work with a smaller one. It is appropriate for ferrous and non-ferrous metals, composite panels, and painted surfaces depending on abrasive selection. At 2.2 pounds, it reduces operator fatigue during extended use. A compressor capable of sustaining the required 21 CFM at 90 psi is necessary for consistent performance.

Key Features

• 14,000 RPM free speed for fast material removal and finishing
• Accepts three pad sizes: 3 inches, 4.5 inches, and 5.5 inches
• 0.50 HP air motor powered at 90 psi operating pressure
• 21 CFM air consumption at full load — requires an adequate compressor supply
• 1/4 inch air inlet fits standard shop quick-connect fittings
• 7/16-20 spindle thread for compatible backing pads and discs
• Compact 2.2 pound weight reduces operator fatigue

Compatibility

Designed for use with standard 5 inch abrasive discs and backing pads with a 7/16-20 spindle thread. Pad sizes of 3 inches, 4.5 inches, and 5.5 inches are supported.

Installation Notes

Connection and operation should be performed by personnel familiar with pneumatic tool safety practices. Before connecting to an air supply, verify the line pressure does not exceed 90 psi and that the compressor can sustain 21 CFM at load. Use a properly rated air fitting and ensure the hose is rated for the operating pressure. Inspect the backing pad and disc for damage before each use and confirm the disc is securely mounted before starting the tool.