Tru-maxx 66254443429 Flap Disc 60 Grit 4.5 in Type 29

Product Description

The TRU-MAXX 66254443429 is a Type 29 zirconia alumina flap disc designed for aggressive grinding and blending on steel and stainless steel surfaces. Measuring 4.5 inches in diameter with a 7/8 inch arbor hole, it accepts standard angle grinder spindles without an adapter. The 60-grit medium grade removes weld spatter, mill scale, and surface defects efficiently while leaving a workable finish. A poly-cotton backing provides flexibility that conforms to contoured workpieces. Rated at 13,300 RPM, it meets the speed demands of common 4.5 inch angle grinders used in fabrication and maintenance work.

This disc fits standard grinding applications in metal fabrication shops, field welding operations, and structural steel work. The Type 29 angled flap orientation delivers more aggressive stock removal compared to a flat Type 27 disc and is preferred when working on flat or slightly contoured surfaces. The GP-Z series zirconia alumina abrasive is well suited for ferrous metals and stainless steel, where aluminum oxide discs wear prematurely. It is sold individually and is a practical choice for service work, job-site grinding, and shop maintenance tasks.

Key Features

• Type 29 angled flap design for aggressive stock removal on flat and mildly contoured surfaces
• 60-grit medium grade suitable for weld blending, deburring, and surface prep
• Zirconia alumina abrasive for extended life on steel and stainless steel
• Poly-cotton backing provides flexibility and conforms to workpiece contours
• 7/8 inch arbor hole fits standard angle grinder spindles directly
• 13,300 RPM maximum speed rating compatible with common 4.5 inch angle grinders

Compatibility

Designed for use on steels and stainless steel. Fits angle grinders with a 4.5 inch wheel capacity and a 7/8 inch spindle or with an appropriate reducing arbor. Arbor hole attachment type.

Installation Notes

Flap discs are installed and changed by qualified operators or tradespeople using an angle grinder wrench. Always power down and unplug or lock out the grinder before mounting or removing the disc. Verify that the grinder free-speed RPM does not exceed the 13,300 RPM rating marked on the disc before operation. Wear appropriate PPE including a face shield and gloves, and inspect the disc for damage before each use.