Dynabrade 51151 Disc Backing Pad 7 Inch Medium Grade

Product Description

The DYNABRADE 51151 is a 7-inch threaded disc backing pad designed to support abrasive discs in disc sander applications. It mounts via a 5/8-11 threaded connection and is rated for a maximum operating speed of 8,500 RPM. The medium-density construction provides a balance of conformability and support, making it suitable for surface preparation, finishing, and blending operations. This backing pad is installed by professional metal fabricators, bodywork technicians, and industrial finishing trades who require consistent disc backing performance across flat and moderately contoured workpieces.

The DYNABRADE 51151 is intended for use with disc sanders in production and maintenance environments. Its 7-inch diameter accommodates standard 7-inch abrasive discs commonly used in metal, wood, and composite surface work. The medium grade density suits general-purpose finishing passes where neither an aggressive firm pad nor a soft conformable pad is required. Typical installations include shop fabrication, weld blending, and surface conditioning in both commercial and light industrial settings.

Key Features

• 7-inch pad diameter supports standard 7-inch abrasive discs
• 5/8-11 threaded mount for secure connection to compatible disc sanders
• 8,500 RPM maximum rated speed
• Medium density construction balances rigidity and disc contact
• Threaded center hole diameter of 0.63 inches for precise fit

Compatibility

Designed as an OEM-style replacement backing pad for disc sanders accepting a 5/8-11 threaded mount and a 7-inch disc pad.

Installation Notes

Installation is typically performed by abrasives technicians or finishing trades. Before mounting or removing the backing pad, ensure the disc sander is fully powered down and disconnected from its power source. Thread the pad onto the sander spindle by hand until snug, then verify the abrasive disc is properly centered before resuming operation. Do not exceed the rated maximum RPM of 8,500 during use.