Merit Abrasives 69957399624 Quick-change Disc 320 Grit

Product Description

The MERIT ABRASIVES 69957399624 is a Type II TS quick-change abrasive disc designed for fast material removal and fine finishing on metal and similar surfaces. Measuring 1 inch in diameter, it features a 320 grit aluminum oxide abrasive coating classified as extra fine grade. The polyester backing provides a rigid support structure that maintains consistent contact across the work surface. The disc reaches a maximum speed of 40,000 RPM, making it compatible with high-speed rotary tools commonly used in metal fabrication, weld blending, and surface prep applications. Installation and removal follow the standard TS Type II quick-change attachment system, allowing for rapid disc swaps without additional tools.

This disc is suited for fine surface finishing and light material removal on metal workpieces in both shop and field environments. The extra fine 320 grit is typically used in later stages of surface preparation, such as smoothing prior welds, cleaning corrosion, or preparing surfaces for coating. The compact 1-inch diameter allows access to tight spaces and contoured surfaces. It is commonly used by machinists, pipefitters, fabricators, and general maintenance technicians working with angle grinders or die grinders equipped with a TS Type II quick-change arbor.

Key Features

• 320 grit extra fine aluminum oxide abrasive for late-stage surface finishing
• 1 inch diameter for access to tight spaces and detailed work areas
• Rigid polyester backing maintains consistent abrasive contact
• TS Type II quick-change attachment for tool-free disc swaps
• Maximum rated speed of 40,000 RPM for use with high-speed rotary tools
• Series R766 construction with silver button and brown disc color

Compatibility

Designed for use with rotary tools and die grinders equipped with a TS Type II quick-change attachment system. Verify that the tool arbor matches the TS Type II interface before installation.

Installation Notes

Installation and removal should be performed with the tool powered off and disconnected from its power source. Confirm the tool spindle speed does not exceed the 40,000 RPM rating of the disc before operation. Inspect the disc for damage before each use and discard any disc that shows cracking, fraying, or separation of the backing. Follow applicable ANSI B7.1 safety standards for abrasive wheel use and wear appropriate eye and face protection during operation.