Tru-maxx Fdt A100-125 Fiber Disc 100 Grit 5 in

Product Description

The TRU-MAXX FDT A100-125 is a 5-inch aluminum oxide fiber disc designed for aggressive material removal and surface finishing on metal, weld seams, and other hard substrates. It runs on a resinoid bond with a fiber backing, delivering consistent cut rate and durability under load. The disc mounts via a 7/8-inch arbor hole and is rated to a maximum of 12,250 RPM, making it compatible with standard right-angle grinders used in fabrication and maintenance environments. At 100 grit, it falls in the fine grade range, suited for blending, light stock removal, and surface prep before coating or inspection. Licensed tradespeople and production floor operators handling steel, aluminum, and similar materials are the primary users.

This disc fits common grinding and finishing tasks in metal fabrication shops, welding operations, pipefitting, and general industrial maintenance. The 5-inch diameter and 7/8-inch arbor hole are standard dimensions for Type 27 and Type 29 backup pad configurations used in those trades. The aluminum oxide abrasive performs reliably on ferrous and non-ferrous metals and is a practical choice for deburring weld flash, removing mill scale, and blending surface transitions on structural components.

Key Features

• 5-inch disc diameter with 7/8-inch arbor hole for standard grinder compatibility
• 100 grit aluminum oxide abrasive in a fine grade for surface blending and light stock removal
• Resinoid bond construction holds abrasive grain firmly under high-speed use
• Fiber backing provides rigidity and heat resistance during extended grinding passes
• Rated to 12,250 RPM maximum for use with standard right-angle grinders
• Maroon disc color for quick grit-grade identification in the shop

Compatibility

Designed as a standard replacement fiber disc for use with 5-inch right-angle grinders and backup pads accepting a 7/8-inch arbor hole mount.

Installation Notes

Installation is typically performed by metalworkers, pipefitters, or maintenance technicians using a compatible backup pad and right-angle grinder. Verify the grinder spindle speed does not exceed the disc maximum of 12,250 RPM before mounting. Inspect the disc for cracks or damage before each use and discard any disc showing signs of delamination or edge wear. Always wear appropriate PPE including a face shield, gloves, and hearing protection during grinding operations.