Walter Surface Technologies 15W454 Flap Disc 40 Grit

Product Description

The WALTER SURFACE TECHNOLOGIES 15W454 is a Type 27 zirconia alumina flap disc designed for aggressive material removal on steel surfaces. Rated at 13,300 RPM, it mounts to a standard angle grinder via a 7/8-inch arbor hole and measures 4.5 inches in diameter. The wood fiber backing provides a rigid but trimmable platform, allowing the disc to be shaped as needed during use. At 40 grit coarse grade, this disc removes stock quickly and is well suited for general-purpose shop work. Licensed trades and fabrication shops handling steel grinding and blending tasks will find this disc a practical everyday consumable.

The 15W454 is intended for use on steel with an angle grinder. Its Type 27 flat-profile design keeps the disc face flush to the work surface, making it effective for flat grinding passes and surface preparation. The AllSteel series designation indicates suitability for general steel fabrication environments including weld blending, deburring, and surface conditioning. The coarse 40-grit cut rate makes this disc appropriate for initial stock removal before transitioning to finer grits.

Key Features

• Type 27 flat profile for flush surface contact during grinding
• 40 grit coarse grade for aggressive stock removal on steel
• Zirconia alumina abrasive for durability and consistent cut rate
• Wood fiber backing with trimmable design for flexible use
• 13,300 RPM maximum speed rating for standard angle grinders
• AllSteel series - suited for general-purpose shop and fabrication use

Compatibility

Designed for use with angle grinders accepting a 7/8-inch arbor attachment. Material application is steel. Compatible with standard angle grinders commonly used in fabrication, welding, and maintenance environments.

Installation Notes

Install and remove flap discs with the grinder unplugged or the power source isolated. Verify the grinder RPM rating meets or exceeds the disc maximum of 13,300 RPM before mounting. Always use the appropriate guard per ANSI and tool manufacturer requirements. Inspect the disc for damage before each use and do not operate a disc that shows signs of delamination or cracking.