Norton 69957370208 Fiber Disc 80 Grit 4.5 Inches Ceramic Alumina

Product Description

The NORTON 69957370208 is a ceramic alumina fiber disc designed for aggressive material removal on metal, stainless steel, and other hard surfaces. Part of the F970 BlazeX series, it uses a resinoid bond to hold ceramic alumina abrasive grain to a fiber backing, delivering consistent cut rate and long disc life under sustained pressure. Rated to 11,000 RPM, the disc mounts via a 5/8-11 threaded arbor hole for use with a Norton Speed-Change back-up pad on a standard right-angle grinder. It is suited to HVAC fabricators, pipefitters, welders, and sheet metal contractors who need reliable coated abrasive performance across high-volume grinding and blending tasks.

This disc is sized at 4.5 inches in diameter with a 5/8-11 threaded center hole, making it a common fit for 4.5-inch angle grinders used in residential and commercial mechanical contracting, fabrication shops, and field service work. The 80-grit ceramic alumina formulation places it in the medium-grade coated abrasive range, appropriate for weld blending, surface conditioning, and stock removal on ferrous and non-ferrous metals. It is sold individually with a minimum order quantity of 25 units per order.

Key Features

• Ceramic alumina abrasive grain on a fiber backing for extended disc life and fast cut rate
• 80 grit medium grade suits weld blending, deburring, and stock removal
• Resinoid bond provides heat resistance during sustained grinding
• 11,000 RPM maximum speed rating for use with 4.5-inch right-angle grinders
• 5/8-11 threaded arbor hole mounts directly to Norton Speed-Change back-up pads
• F970 BlazeX series orange disc for easy identification in the shop or field

Compatibility

Designed for use with the Norton Speed-Change back-up pad. Fits 4.5-inch right-angle grinders equipped with a 5/8-11 threaded spindle. No additional compatible model numbers were specified in the product data.

Installation Notes

Installation is performed by trades professionals including HVAC fabricators, pipefitters, and welders using standard 4.5-inch angle grinders. Ensure the grinder is fully powered down and unplugged before mounting or removing the disc. Verify that the grinder spindle speed does not exceed the 11,000 RPM disc rating before operation. Inspect the disc for cracks or damage before each use and never force or overtighten the back-up pad against the disc face.