Dynabrade 51401 Pneumatic Buffer 0.4 Hp 3 Inch Pad

Product Description

The DYNABRADE 51401 is a handheld pneumatic rotary buffer designed for surface finishing, polishing, and compounding tasks in professional trade and industrial environments. Powered by a high-torque planetary-geared air motor, it delivers 0.4 hp at 5,000 RPM through a 3-inch pad diameter. The tool operates on a standard 90 psi compressed air supply and consumes 24 SCFM, making adequate air supply capacity a key installation consideration. The 3/8-24 spindle thread and 1/4 NPT air inlet are industry-standard interfaces. At 1.7 pounds, the 51401 is compact and manageable for extended handheld use. It is suited for body shop technicians, industrial finishers, and trade professionals who require a lightweight, consistent-speed rotary action buffer.

The DYNABRADE 51401 fits a wide range of surface finishing applications including paint correction, clear coat polishing, and light material removal on metal, composite, and painted surfaces. Its standard rotary action is appropriate for tasks that benefit from a consistent circular motion pattern. The rear exhaust location directs air away from the work surface, reducing contamination of wet compounds or coatings during operation. This tool is typically deployed in automotive body shops, manufacturing finishing lines, and skilled trade environments where pneumatic tooling is the standard.

Key Features

• High-torque planetary-geared air motor delivers consistent 5,000 RPM rotary action
• 3-inch pad diameter suits compact surface finishing and detail work
• Standard 3/8-24 spindle thread accepts a wide range of backing plates and pads
• 1/4 NPT air inlet integrates with standard shop air systems at 90 psi
• Rear exhaust keeps air and debris away from the work surface
• Lightweight at 1.7 pounds for reduced operator fatigue during extended use
• CE and EAC certified for use in applicable regulated environments

Compatibility

Designed for use with standard 3-inch backing plates and pads utilizing a 3/8-24 spindle thread. Connects to shop air systems equipped with a 1/4 NPT fitting operating at 90 psi with sufficient volume to supply 24 SCFM.

Installation Notes

Installation and operation should be performed by qualified pneumatic tool technicians or tradespeople familiar with compressed air systems. Before attaching or changing pads, disconnect the tool from the air supply to prevent accidental activation. Verify that the air compressor and distribution system can sustain 24 SCFM at 90 psi to maintain rated performance and prevent motor damage from under-supply. Ensure all fittings are properly sealed and the air line is free of moisture and contaminants before connecting the 1/4 NPT inlet.