UCT Gem Carbide Rotary Burr SM-5 1/2 Inch (1/4 Inch Shank Tungsten Carbide Pointed Cone Double Cut 20000 Max RPM Weld Grinding Chamfering)

UCT Gem Carbide SM-5 1/2-Inch Pointed Cone Carbide Rotary Burr

The UCT Gem Carbide SM-5 1/2-Inch Pointed Cone Carbide Rotary Burr is a specialized rotary grinding and chamfering bit engineered for beveling hole edges, deburring 14-degree angled recesses, countersinking drilled passages, and dressing internal cone contours without binding in tight spaces. Rated for operational speeds up to 20,000 RPM on a standard 1/4-inch steel shank, this tungsten carbide head bit features a pointed cone 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 1-inch length of cut across a 2-3/4-inch overall length, this 0.25-pound rotary tool accessory executes high-volume metal removal.

Best Used For:

• Edge Chamfering & Hole Countersinking: Beveling 14-degree chamfers onto drilled plate holes and outer metal edges prior to welding.
• Angled Recess & Narrow Cone Deburring: Removing sharp flash lines and burs from narrow conical cavities in steel castings and machined parts.
• Cylinder Head & Porting Modifications: Shaping and smoothing narrow internal runner transitions and angled port entrances in automotive 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.
• 14-Degree Pointed Cone (SM-5) Profile: Narrow conical geometry provides maximum clearance for chamfering and deep hole deburring without gouging.
• 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.

What's Included

• (1) UCT Gem Carbide SM-5 1/2-Inch Double Cut Pointed Cone Carbide Rotary Burr

Technical Specifications

Pro-Tip: Align the 14-degree cone side evenly against workpiece edges during chamfering; running at steady die grinder speeds near 20,000 RPM with light lateral pressure prevents chatter and leaves smooth bevels.