Forney Industries Inc 71930 Flap Disc 4.5 in 36 Grit Type 29

Product Description

The FORNEY INDUSTRIES INC 71930 is a Type 29 depressed-center flap disc designed for use with right-angle grinders. It measures 4.5 inches in diameter and mounts via a 5/8-11 inches arbor. The disc is constructed with multiple layers of jumbo blue zirconia cloth flaps that continuously expose fresh, sharp grinding points as the disc wears. A reinforced fiberglass backing plate provides structural support, and each disc is balance-tested to minimize vibration during grinding and finishing operations. The package contains 10 discs and weighs 4.1 pounds.

This flap disc is suited for both rough material removal and fine finishing on metal surfaces. The zirconia abrasive construction is appropriate for fabrication shops, welding operations, and general metalworking applications where fast stock removal and extended disc life are priorities. Each disc is laminated using automated equipment for consistent flap placement and balanced performance across the full working life of the disc.

Key Features

• Type 29 depressed-center geometry for aggressive contact angle on flat and contoured surfaces
• Jumbo blue zirconia cloth flaps for fast cutting and extended service life
• Multiple flap layers continuously expose new sharp abrasive points as disc wears
• Reinforced fiberglass backing plate for durability under load
• Balance-tested for vibration-free grinding and finishing
• Fits standard 5/8-11 inches arbor right-angle grinders

Compatibility

Designed for use with right-angle grinders equipped with a standard 5/8-11 inches arbor.

Installation Notes

Installation should be performed by a qualified operator familiar with angle grinder safety practices. Ensure the grinder is unplugged or the power source is isolated before mounting or removing the disc. Verify the grinder RPM rating meets or exceeds the disc RPM rating before operation. Wear appropriate PPE including eye protection and gloves when operating grinding equipment.