Tru-maxx 66254443407 Flap Disc 40 Grit Type 27 7 in

Product Description

The TRU-MAXX 66254443407 is a Type 27 zirconia alumina flap disc designed for aggressive material removal on steel and stainless steel surfaces. The disc measures 7 inches in diameter with a 7/8-inch arbor hole and spins at a maximum of 8,600 RPM. At 40 grit coarse grade, it cuts fast and handles heavy stock removal, weld blending, and surface conditioning tasks. The poly-cotton backing provides flexibility and durability through demanding grind cycles. Metalworkers, fabricators, and maintenance technicians working with angle grinders reach for this disc when a grinding wheel leaves too much heat or surface damage behind.

The 66254443407 fits standard 7-inch angle grinders with a 7/8-inch arbor. The Type 27 depressed-center profile keeps the disc face nearly flat to the workpiece, making it well-suited for flat surface grinding and moderate edge work on structural steel, weld seams, and stainless steel fabrications. The GP-Z series designation indicates a general-purpose zirconia blend balanced for both cut rate and disc life across carbon steel and stainless applications common in shop and field settings.

Key Features

• Zirconia alumina abrasive delivers high cut rate and extended disc life compared to aluminum oxide
• Type 27 flat-face profile suited for surface grinding on flat and contoured workpieces
• 40 grit coarse grade for aggressive stock removal and weld blending
• Poly-cotton backing adds flexibility and absorbs vibration during use
• Rated to 8,600 RPM maximum for use with standard 7-inch angle grinders
• Suitable for steels and stainless steel per GP-Z series material application rating

Compatibility

Designed for use on 7-inch angle grinders with a 7/8-inch arbor hole. Rated for material removal on steels and stainless steel per manufacturer application data.

Installation Notes

Installation and disc changes must be performed with the grinder unplugged or the power source locked out. Verify the grinder guard is in place and the spindle speed does not exceed the 8,600 RPM maximum rating before mounting. Always inspect the disc for cracks or damage before use and discard any disc that shows signs of delamination or structural compromise. Wear appropriate PPE including a face shield, gloves, and hearing protection during operation.