Dynabrade 50605 Disc Backing Pad 5/16-24 12000 Rpm

Product Description

The DYNABRADE 50605 is a rubber disc backing pad designed for use with random orbital sanders. It mounts via a 5/16-24 male threaded connection and is rated to a maximum of 12,000 RPM. This backing pad serves as the interface between the sander and the abrasive disc, absorbing vibration and providing consistent surface contact during grinding, sanding, or finishing operations. It is installed and replaced by machinists, metalworkers, auto body technicians, and fabricators working in both production and job-shop environments. The rubber construction allows slight flexion across the work surface, helping maintain even abrasive contact on contoured or flat workpieces.

The 50605 is suited for random orbital sander applications where a threaded backing pad mount is required. The 5/16-24 male thread is a common spindle thread specification found on many handheld and inline random orbital sanders. This pad is appropriate for use in metal fabrication, woodworking, auto body prep, and general surface finishing where disc abrasives are used at moderate to high rotational speeds.

Key Features

• 5/16-24 male threaded mount for secure spindle attachment
• 12,000 RPM maximum speed rating for high-speed sanding applications
• Rubber construction provides surface flex and vibration absorption
• Designed for random orbital sander compatibility
• Threaded mount type allows tool-free disc changes on compatible spindles

Compatibility

Designed for use with random orbital sanders equipped with a 5/16-24 threaded spindle.

Installation Notes

Installation and replacement of backing pads should be performed by qualified personnel familiar with abrasive tool safety. Power down and disconnect the tool from its air supply or power source before removing or installing the backing pad. Thread the pad onto the spindle by hand until fully seated and snug — do not overtighten. Always verify that the spindle speed of the tool does not exceed the 12,000 RPM rating of this pad before operating.