Dynabrade 51347 Back-up Pad Medium Density 3/8-24

Product Description

The DYNABRADE 51347 is a medium-density back-up pad designed to support abrasive discs during grinding, sanding, and finishing operations on powered disc tools. It features a 3/8-inch-24 female thread mounting interface, allowing direct attachment to compatible right-angle and straight-line pneumatic or electric disc grinders. Medium-density construction provides a balance between conformability and backing support, making it suitable for flat and moderately contoured work surfaces. This part is installed by metalworkers, fabricators, and industrial maintenance technicians as a replacement or spare component in abrasive disc tool assemblies.

Back-up pads like the 51347 are used across a range of industrial and manufacturing environments, including metal fabrication shops, automotive body repair facilities, and general maintenance operations. The pad mounts to the tool spindle via its female thread and holds hook-and-loop or pressure-sensitive adhesive abrasive discs in place during use. It is suited for applications requiring consistent disc backing on flat panels, weld seams, and surface preparation work.

Key Features

• Medium-density construction balances surface conformability with stable disc support
• 3/8-inch-24 female thread for direct spindle mounting on compatible disc tools
• Designed as a replacement back-up pad for DYNABRADE disc tool assemblies
• Compatible with standard abrasive disc attachment systems used in industrial finishing

Compatibility

Designed as an OEM-style replacement back-up pad for DYNABRADE disc-type power tools that accept a 3/8-inch-24 female thread spindle connection.

Installation Notes

Installation should be performed by a qualified technician with the power tool fully disconnected from its air supply or electrical source before beginning. Thread the back-up pad onto the tool spindle by hand until firmly seated, following the tool manufacturer's torque guidance. Inspect the pad for wear, cracking, or delamination before each use and replace if damage is present. Always select an abrasive disc rated for the tool's maximum RPM.

Technical Specifications

• Thread Size: 3/8-24 female
• Density: Medium

Standard Information

• Brand: DYNABRADE
• Manufacturer Part Number: 51347