Hertel SZ0020TW Abrasive Bur Tree Radius Double Cut 3/4 in

Product Description

The HERTEL SZ0020TW is a solid carbide double cut abrasive bur with a tree with radius end head shape, classified under industry specification SF-7. It is designed for material removal, deburring, shaping, and surface finishing in metal fabrication, tooling, and machining applications. The cutting head measures 3/4 inch in diameter with a 1-inch length of cut, and the 1/4-inch shank fits standard rotary tools, die grinders, and flexible shaft machines. The uncoated solid carbide construction delivers consistent cutting performance across ferrous and non-ferrous metals, hardened steels, and hard alloys. Installation and use are typically carried out by machinists, tool and die makers, and maintenance technicians.

The SZ0020TW is suited for use in precision metalworking environments where controlled material removal and contour finishing are required. The tree with radius end geometry allows access to curved surfaces, concave profiles, and internal radii that straight or cylindrical burs cannot reach efficiently. It is a single-piece unit packaged individually, making it appropriate for bench-level tool replacement or as a direct add to a rotary tool kit in industrial maintenance, mold making, and fabrication shops.

Key Features

• SF-7 industry specification tree with radius end head shape for contoured surface access
• Double cut tooth style for aggressive material removal with reduced chatter
• 3/4 inch cutting diameter with 1-inch length of cut for substantial stock removal
• 1/4 inch shank diameter compatible with standard die grinders and rotary tools
• Solid carbide head construction for durability in hard material applications
• Uncoated finish — no coating buildup concerns when working in close-tolerance areas

Compatibility

Designed as a direct-fit replacement or standard addition for rotary tools and die grinders accepting a 1/4-inch shank abrasive bur with SF-7 geometry.

Installation Notes

Installation is performed by securing the 1/4-inch shank into the collet of a compatible die grinder or rotary tool and tightening to the tool manufacturer specification. Always power down and disconnect the tool before changing burs. Wear appropriate eye protection and gloves when handling carbide tooling. Inspect the shank and cutting head for chips or cracks before each use and do not operate above the maximum RPM rated for the tool.