Tru-maxx 69957323737 Quick-change Disc 320 Grit 3in

Product Description

The TRU-MAXX 69957323737 is a quick-change abrasive disc designed for precision surface finishing and material removal in metalworking and fabrication applications. The disc measures 3 inches in diameter and is coated with aluminum oxide abrasive at 320 grit, placing it in the extra fine grade range. It features a cloth backing with an X-weight designation, providing durability and flexibility under load. The disc is rated to a maximum of 20,000 RPM and uses a Type R / TR (Type III) quick-change attaching system. This disc is typically installed by machinists, metal fabricators, and maintenance technicians working with angle grinders or die grinders equipped with a compatible quick-change mandrel.

This disc is suited for light stock removal, blending, and finishing passes on metal surfaces in both shop and field environments. The 320-grit aluminum oxide construction performs well on ferrous and non-ferrous metals, delivering a consistent scratch pattern for pre-coating prep or surface refinement. The quick-change Type R compatibility allows fast disc swaps without tools, reducing downtime during high-volume finishing operations. Each package contains one disc, with a minimum order quantity of 50 units, making this product appropriate for shop replenishment and production-scale use.

Key Features

• 320 grit extra fine aluminum oxide abrasive for finish-level surface work
• 3-inch disc diameter compatible with standard quick-change mandrels
• Type R / TR (Type III) attaching system for tool-free disc changes
• X-weight cloth backing provides rigidity and resistance to tearing under pressure
• 20,000 RPM maximum speed rating for use with high-speed die grinders and angle grinders
• Brown disc color with black button for visual identification in multi-grit setups

Compatibility

Designed for use with quick-change mandrels and holders that accept Type R and TR (Type III) discs. Verify mandrel RPM rating meets or exceeds the disc maximum before mounting.

Installation Notes

Installation should be performed by qualified machinists or fabricators familiar with abrasive tooling safety. Before mounting, power down and disconnect the grinder from its power source. Confirm the tool spindle speed does not exceed the 20,000 RPM disc rating. Inspect the disc for cracks, tears, or delamination before each use and do not use damaged discs.