Walter Surface Technologies 15R458 Flap Disc 80 Grit

Product Description

The WALTER SURFACE TECHNOLOGIES 15R458 is a Type 27 flap disc engineered for aggressive material removal and surface blending on metal workpieces. Built with zirconia alumina abrasive at 80 grit, it falls in the medium grade range, delivering a balance of cut rate and finish quality suited for weld seam grinding, deburring, and surface preparation. The plastic backing supports the flat grinding profile of the Type 27 geometry. Rated at 13,300 RPM maximum, it is designed for use on standard 7/8 inch arbor angle grinders commonly used in fabrication, structural steel, and general metalworking trades.

This disc is well suited for residential fabrication shops, commercial construction sites, and industrial maintenance environments where consistent metal stock removal is required. It is appropriate for use on mild steel, stainless steel, and other ferrous metals where a medium-cut abrasive is specified. The 80 grit zirconia alumina construction handles both initial grinding passes and intermediate blending steps, making it a practical choice for welders, pipefitters, ironworkers, and general contractors working with structural or sheet metal.

Key Features

• Type 27 flat profile for grinding and blending applications on flat and contoured surfaces
• Zirconia alumina abrasive provides aggressive cut with extended disc life compared to standard aluminum oxide
• 80 grit medium grade balances material removal rate with surface finish quality
• Plastic-backed construction supports consistent abrasive flap performance throughout disc life
• 13,300 RPM maximum speed rating compatible with standard 4-1/2 inch to 5 inch angle grinders
• 7/8 inch arbor hole fits the most common angle grinder spindle sizes used in trades

Compatibility

Designed for use on angle grinders with a 7/8 inch arbor and a maximum operating speed of 13,300 RPM or lower, consistent with standard Type 27 flap disc fitment on 4-1/2 inch to 5 inch grinders.

Installation Notes

Installation should be performed by a qualified operator familiar with angle grinder safety requirements. Always confirm the grinder's no-load RPM does not exceed the 13,300 RPM maximum rating of the disc before mounting. Inspect the disc for damage before each use and ensure the arbor nut is tightened securely using the appropriate spanner wrench. Follow ANSI B7.1 and applicable workplace safety standards when operating grinding equipment.