Merit Abrasives 69957399609 Quick-change Disc 150 Grit

Product Description

The MERIT ABRASIVES 69957399609 is a quick-change coated abrasive disc designed for high-speed surface finishing and material removal in metalworking and fabrication applications. Measuring 3/4 inches in diameter, it uses a Type S Power-Lock attaching system for fast disc swaps without tools. The abrasive grain is aluminum oxide at 150 grit, placing it in the very fine grade range. It is backed by rigid polyester cloth (Y-weight) and rated for a maximum of 40,000 RPM. This disc suits grinding, deburring, and blending tasks performed by machinists, fabricators, and metal finishing technicians.

This disc is intended for use with Type S quick-change mandrels on die grinders and right-angle tools common in production metalworking, automotive bodywork, and precision fabrication shops. Its 3/4-inch diameter fits tight access areas where larger discs cannot reach. The 150-grit aluminum oxide grain is well suited for light stock removal, surface prep before coating, and final blending passes on ferrous and non-ferrous metals. This item is sold individually but carries a minimum order quantity of 100 units, making it appropriate for shop or production line procurement.

Key Features

• 150-grit aluminum oxide abrasive for very fine surface finishing and blending
• Type S Power-Lock attaching system enables tool-free disc changes on compatible mandrels
• 3/4-inch diameter fits confined work areas inaccessible to standard discs
• Rigid Y-weight polyester backing resists flex for consistent contact pressure
• 40,000 RPM maximum speed rating supports high-speed die grinder use
• Brown coated construction with silver button for quick visual identification

Compatibility

Designed for use with Type S quick-change mandrels on die grinders and rotary tools that accept Power-Lock Type S accessories.

Installation Notes

This disc is installed and removed by a licensed or trained metalworking technician using a compatible Type S quick-change mandrel. Always confirm the mandrel and tool RPM rating meets or exceeds 40,000 RPM before mounting. Ensure the tool is powered off and disconnected from the power source before changing discs. Wear appropriate eye protection and follow applicable ANSI B7 and OSHA abrasive safety guidelines during use.