Tru-maxx 66254443440 Flap Disc 4-1/2 in 60 Grit Type 27

Product Description

The TRU-MAXX 66254443440 is a Type 27 zirconia alumina flap disc designed for aggressive material removal on steel and stainless steel. At 4-1/2 inches in diameter with a 7/8 inch arbor hole, it mounts directly to standard angle grinders. The 60-grit coarse abrasive removes material quickly while the high-density poly-cotton backing distributes wear evenly across the flaps. Rated to 13,300 RPM, this disc maintains cutting performance through extended use. The fiberglass backing plate adds rigidity for flat and depressed-center grinding applications. Fabricators, welders, and pipe fitters reach for this disc when speed and control matter on common ferrous and non-ferrous metals.

This flap disc is suited for light industrial and fabrication work where surface prep involves beveling, weld seam removal, or edge deburring. The Type 27 flat profile keeps the disc flush to the workpiece, making it effective on flat stock, plate, structural steel, and tubing. The zirconia alumina grain fractures during use to expose fresh cutting edges, extending disc life compared to standard aluminum oxide. It is a practical choice for production shops and field welders who need a reliable disc in the 60-grit range.

Key Features

• 60-grit zirconia alumina abrasive for coarse, fast material removal
• Type 27 flat profile for beveling, weld removal, and edge deburring
• High-density construction extends disc life under continuous load
• Poly-cotton backing with fiberglass backing plate for added rigidity
• 13,300 RPM max speed compatible with standard 4-1/2 inch angle grinders
• Suitable for steel and stainless steel applications

Compatibility

Designed for use with standard 4-1/2 inch angle grinders fitted with a 7/8 inch arbor. Rated for steel and stainless steel material applications.

Installation Notes

Installation and use should be performed by qualified personnel following ANSI B7.1 grinding safety standards. Verify the grinder's rated RPM meets or exceeds the disc's 13,300 RPM maximum before mounting. Always inspect the disc for cracks or damage before use and ensure the arbor nut is properly tightened with the correct flange. Wear appropriate PPE including face shield, gloves, and hearing protection during operation.