Merit Abrasives 08834172118 Psa Disc 9 in 50 Grit

Product Description

The MERIT ABRASIVES 08834172118 is a 9-inch PSA (pressure-sensitive adhesive) abrasive disc designed for aggressive material removal on flat and contoured surfaces. Built with aluminum oxide abrasive on a flexible cloth backing, it delivers consistent cut at 50 grit, placing it firmly in the coarse grade range. The PSA backing allows fast, tool-free mounting to compatible disc pads, making disc changes efficient during production grinding and surface preparation tasks. This disc weighs 0.5 pounds and ships as a single unit. It is a standard choice for metalworking, woodworking, and general fabrication shops where high stock removal is the priority.

This disc is suited for surface preparation, weld blending, rust removal, and paint stripping in both light industrial and fabrication environments. The flexible cloth backing conforms to mild surface irregularities, extending contact area on workpieces that are not perfectly flat. At 50 grit coarse grade, it is best applied early in a grinding sequence before stepping up to finer grits. No vacuum holes are included, so it is intended for use on solid-face disc pads without dust extraction ports. Typical users include metal fabricators, welders, woodworkers, and maintenance technicians.

Key Features

• 9-inch diameter provides a large abrasive surface for efficient material removal
• 50 grit coarse aluminum oxide for aggressive stock removal and surface prep
• Flexible cloth backing allows moderate conformability to workpiece contours
• PSA adhesive backing enables fast, tool-free mounting and disc changes
• No vacuum holes — designed for use with solid-face backing pads
• Black disc color for easy visual identification during use

Compatibility

Designed for use with 9-inch PSA-style backing pads and disc sanders that accept pressure-sensitive adhesive abrasive discs without vacuum holes.

Installation Notes

Mounting is performed by peeling the release liner from the PSA backing and pressing the disc firmly onto a clean, dry 9-inch backing pad. Ensure the backing pad surface is free of debris, old adhesive, and moisture before applying the disc to achieve full adhesion. Always verify that the disc speed rating meets or exceeds the maximum RPM of the tool before operation. Disc installation and replacement should be performed with the tool unplugged or the air supply disconnected.