UCT Gem Carbide Rotary Burr SF-3 3/8 Inch (1/4 Inch Shank Tungsten Carbide Tree Shape Radius End Double Cut 25000 Max RPM Weld Grinding)

UCT Gem Carbide SF-3 3/8-Inch Tree Shape Radius End Carbide Rotary Burr

The UCT Gem Carbide SF-3 3/8-Inch Tree Shape Radius End Carbide Rotary Burr is a specialized rotary grinding and deburring bit engineered for navigating acute angles, grinding narrow V-grooves, blending internal radiused weld seams, and shaping tight corner contours without digging into target workpieces. Rated for operational speeds up to 25,000 RPM on a standard 1/4-inch steel shank, this tungsten carbide head bit features a tree-shape radius-end head profile and double-cut cross-flute geometry that breaks material into fine chips to eliminate chatter. Outfitted with a 3/8-inch head diameter and a 3/4-inch length of cut across a 2-1/2-inch overall length, this 0.15-pound rotary tool accessory executes precision metal removal.

Best Used For:

• Acute-Angle & V-Groove Joint Grinding: Reaching deep into narrow angled weld preparations and tight interior radiused corners to remove excess bead material.
• Internal Contouring & Recessed Deburring: Shaving sharp flash lines and burs from narrow cavities and radiused channels in steel castings and machined components.
• Engine Cylinder Head & Manifold Porting: Shaping and smoothing narrow internal runner transitions and curved port walls in automotive cylinder heads.

Key Performance & Safety Features

• Tungsten Carbide Cutting Head: High-density carbide composition brazed to a hardened steel shank maintains cutting edge hardness under intense heat.
• Tree Shape Radius-End (SF-3) Head Profile: Rounded tree geometry provides smooth clearance in narrow V-cuts, acute angles, and rounded fillets without gouging.
• Double-Cut Cross-Flute Design: Opposing cutting flutes produce granular metal chips to minimize tool chatter and deliver smooth surface finishes.
• 25,000 Maximum RPM Speed Rating: Precision-balanced construction accommodates pneumatic and electric 1/4-inch die grinders at full operating speed.
• Standard 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.

What's Included

• (1) UCT Gem Carbide SF-3 3/8-Inch Double Cut Tree Shape Radius End Solid Carbide Burr

Technical Specifications

Pro-Tip: Guide the radius-end tree head smoothly through narrow V-grooves without jamming; maintaining steady die grinder speeds near 25,000 RPM with light pressure prevents tooth chipping and ensures even stock removal.