Norton 66623340053 Quick-change Disc 4in 150 Grit

Product Description

The NORTON 66623340053 is a Type R quick-change non-woven abrasive disc engineered for surface conditioning, blending, and finishing across a wide range of metal substrates. At 4 inches in diameter with a 150 grit (Very Fine) aluminum oxide abrasive grain, this disc mounts directly to Type R quick-change systems for fast tool-free swaps in production and maintenance environments. The high-loft polyester fiber construction and Clean Bond resin technology resist smearing and loading, maintaining cut rate throughout the disc life. Maximum operating speed is 15,000 RPM. Sold in packages of 25 discs, with a minimum order quantity of 25.

This disc is suited for surface prep, light deburring, and smear-free finishing on stainless steel (300 and 400 series), hard and soft carbon steels, cast iron, ductile iron, gray iron, brass, bronze, copper, titanium, tool steels, super alloys, and fiberglass composites. Compatible machines include die grinders and handheld disc sanders. The flexible backing conforms to contoured workpiece surfaces, making it practical for weld blending and pre-inspection surface conditioning in fabrication and maintenance shops.

Key Features

• 150 grit aluminum oxide abrasive grain for Very Fine cut rate on metal and composite surfaces
• High-loft nylon fiber construction extends disc service life under continuous use
• Clean Bond resin technology delivers smear-free finishes on stainless and non-ferrous metals
• Type R quick-change attaching system allows tool-free disc changes on compatible grinders
• Flexible polyester backing conforms to curved and contoured work surfaces
• Rated to 15,000 RPM for use on standard die grinders and handheld disc sanders

Compatibility

Designed for use with Type R quick-change disc systems on die grinders and handheld disc sanders. Material compatibility includes 300 Series Stainless, 400 Series Stainless, Brass, Bronze, Cast Iron, Copper, Ductile Iron, Fiberglass and Composites, Gray Iron, Hard Carbon Steels, Soft Carbon Steels, Super Alloys, Titanium, and Tool Steels.

Installation Notes

Mount the disc onto a Type R quick-change mandrel; ensure the mandrel and disc are fully engaged before operating. Verify the tool's free speed does not exceed the disc's 15,000 RPM rating before use. Always wear appropriate eye protection and follow ANSI B7.1 safe-use guidelines for abrasive products. Inspect the disc for damage before each use and do not use damaged or delaminated discs.