Forney Industries Inc 72321 Backing Pad 4.5in 5/8-11

Product Description

The FORNEY INDUSTRIES INC 72321 is a heavy-duty flexible backing pad designed to mount sanding discs and buffing bonnets on angle grinders and similar rotary tools. Measuring 4.5 inches in diameter with a 5/8-11 spindle nut connection, this pad is rated to a maximum of 10,000 RPM. The flexible construction allows the pad to conform slightly to irregular or curved surfaces, helping maintain consistent contact between the abrasive and the workpiece. It is a standard consumable accessory used by metalworkers, fabricators, and finishing tradespeople in both shop and field environments.

This backing pad is suited for use with 4.5-inch sanding discs and buffing bonnets on 4.5-inch angle grinders. Typical applications include surface preparation, weld cleanup, rust removal, and light buffing on metal, wood, or composite surfaces. The 5/8-11 threaded spindle nut is the standard connection for most 4.5-inch angle grinders in the North American market. Sold in a package quantity of 6 units, making it practical for shop stocking or multi-tool setups.

Key Features

• 4.5-inch diameter pad fits standard 4.5-inch sanding discs and buffing bonnets
• 5/8-11 spindle nut connection matches most North American angle grinders
• Maximum rated speed of 10,000 RPM for safe high-speed operation
• Heavy-duty flexible construction for consistent surface contact on irregular workpieces
• Packaged in quantities of 6 for convenient shop stocking

Compatibility

Designed for use with 4.5-inch sanding discs and buffing bonnets on angle grinders equipped with a 5/8-11 threaded spindle. Do not exceed the rated maximum of 10,000 RPM.

Installation Notes

Installation and removal should always be performed with the grinder unplugged or the battery pack removed. Thread the 5/8-11 spindle nut securely onto the grinder arbor before attaching the abrasive disc or buffing bonnet. Inspect the pad for wear, tears, or deformation before each use and replace if damaged. Always verify that the abrasive accessory being mounted carries a speed rating equal to or greater than the grinder operating speed.