UCT Gem Carbide Rotary Burr SB-1 1/4 Inch (1/4 Inch Shank Solid Tungsten Carbide Cylindrical Radius End Double Cut 30000 Max RPM Weld Grinding)

UCT Gem Carbide SB-1 1/4-Inch Cylindrical Radius End Solid Carbide Rotary Burr

The UCT Gem Carbide SB-1 1/4-Inch Cylindrical Radius End Solid Carbide Rotary Burr is a rotary grinding and contouring bit engineered for blending fillet welds, shaping internal radiused corners, deburring steel tubing, and porting engine manifolds without digging sharp shoulders into target workpieces. Rated for operational speeds up to 30,000 RPM on a standard 1/4-inch shank, this solid tungsten carbide bit features a ball-nose cylindrical head profile and double-cut cross-flute geometry that breaks material into fine chips to reduce chatter. Outfitted with a 1/4-inch head diameter and a 5/8-inch length of cut across a 2-1/2-inch overall length, this 0.12-pound rotary tool accessory executes high-speed metal removal.

Best Used For:

• Fillet Weld Blending & Contour Finishing: Smoothing curved fillet weld seams flush without gouging adjacent metal sidewalls.
• Internal Radius Pocket & Groove Shaping: Machining rounded bottom grooves, keyways, and internal radius contours in steel fabrications.
• Die & Mold Cavity Deburring: Removing sharp burrs and flash lines from intricate steel, cast iron, and aluminum mold cavities.

Key Performance & Safety Features

• Solid Tungsten Carbide Construction: Single-piece carbide formulation maintains cutting edge hardness under intense frictional heat.
• Cylindrical Radius End (Ball Nose) Profile: Radius end geometry prevents gouging when working inside rounded corners and internal fillets.
• Double-Cut Cross-Flute Design: Opposing cutting flutes produce granular metal chips to minimize tool chatter and deliver smooth surface finishes.
• 30,000 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 shank inserts 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 SB-1 1/4-Inch Double Cut Cylindrical Radius End Solid Carbide Burr

Technical Specifications

Pro-Tip: Maintain a light touch and continuous smooth movement when working in internal fillets; taking light, high-speed passes near 30,000 RPM prevents chatter and maximizes carbide tooth life on hardened steel alloys.