UCT Gem Carbide Rotary Burr SD-5 1/2 Inch (1/4 Inch Shank Tungsten Carbide Ball Shape Double Cut 20000 Max RPM Weld Grinding Pipe Hollowing)

UCT Gem Carbide SD-5 1/2-Inch Ball Shape Carbide Rotary Burr

The UCT Gem Carbide SD-5 1/2-Inch Ball Shape Carbide Rotary Burr is a rotary grinding and hollowing bit engineered for carving spherical recesses, machining concave profiles, deburring pipe interiors, and blending internal radii in metal fabrications. Rated for operational speeds up to 20,000 RPM on a standard 1/4-inch steel shank, this tungsten carbide head bit features a spherical ball profile and double-cut cross-flute geometry that breaks material into fine chips to eliminate chatter. Outfitted with a 1/2-inch head diameter and a 7/16-inch length of cut across a 2-5/8-inch overall length, this 0.25-pound rotary tool accessory executes high-volume metal removal.

Best Used For:

• Internal Pipe & Hole Deburring: Removing sharp internal burrs and slag from large drilled holes and pipe cutouts without binding.
• Concave Profile & Spherical Pocket Carving: Machining smooth spherical depressions, concave radii, and ball sockets in heavy metal dies.
• Weld Seam Blending & Radius Finishing: Blending interior curved weld beads flush in restricted iron and structural steel assemblies.

Key Performance & Safety Features

• Tungsten Carbide Cutting Head: High-density carbide composition maintains cutting edge hardness under intense frictional heat during heavy grinding.
• Spherical Ball (SD-5) Head Profile: Ball shape geometry permits multi-directional hollowing and smooth concave surface profiling.
• Double-Cut Cross-Flute Design: Opposing cutting flutes produce granular metal chips to minimize tool chatter and deliver smooth surface finishes.
• 20,000 Maximum RPM Speed Rating: Precision-balanced construction accommodates pneumatic and electric 1/4-inch die grinders at full operating speed.
• Hardened 1/4-Inch Steel Shank: Precision-ground steel shank mounts securely into standard 1/4-inch collets to eliminate rotational runout.
• Multi-Metal Substrate Compatibility: Cuts efficiently through structural steel, cast iron, stainless steel, brass, bronze, and aluminum alloys.

What's Included

• (1) UCT Gem Carbide SD-5 1/2-Inch Double Cut Ball Shape Solid Carbide Burr

Technical Specifications

Pro-Tip: Maintain high die grinder rotational speeds near 20,000 RPM while using continuous circular sweeps; light pressure allows the spherical ball flutes to carve smooth concave radii without digging or stalling.