Forney Industries Inc 71669 Resin Fibre Disc 50 Grit 4.5 in 3pk

Product Description

The FORNEY INDUSTRIES INC 71669 is a 3-pack of 4.5-inch resin fibre sanding discs designed for use on right angle grinders. Each disc is constructed with a heavy vulcanized fibre backing and coated with aluminum oxide abrasive grains bonded with a tough, heat-resistant resin. This construction delivers fast cutting action and extended disc life under demanding conditions. At 50 grit, these discs remove material aggressively while leaving a surface ready for finishing or coating. Metalworkers, fabricators, and welding professionals reach for this disc when fast stock removal and durability both matter on the same job.

These discs are suited for weld grinding, blending, finishing, and deburring across a range of materials including most types of steel, fiberglass, and plastics. The 7/8-inch arbor hole is the standard fit for most right angle grinder backing pads. Typical applications include structural steel fabrication, light sheet metal work, and general-purpose surface prep in both shop and field environments. The 3-pack format reduces downtime by keeping spares on hand during extended grinding sessions.

Key Features

• 50 grit aluminum oxide abrasive for aggressive material removal on steel, fiberglass, and plastics
• Heavy vulcanized fibre backing provides rigidity and durability under load
• Heat-resistant resin bond resists glazing and maintains cutting performance during extended use
• 4.5-inch diameter with 7/8-inch arbor fits standard right angle grinder backing pads
• Suitable for weld grinding, blending, finishing, and deburring applications
• Comes in a 3-pack to minimize tool downtime on the job

Compatibility

Designed for use on right angle grinders fitted with a standard 4.5-inch resin fibre disc backing pad with a 7/8-inch arbor.

Installation Notes

Disc mounting and removal should be performed by a qualified operator with the grinder unplugged or the power source isolated. Inspect the disc for cracks, chips, or delamination before each use and discard any damaged disc immediately. Follow the grinder manufacturer's maximum RPM rating and confirm the disc speed rating meets or exceeds the tool's no-load speed before operation. Eye protection and appropriate PPE are required during grinding operations per applicable safety standards.