SB-3 Carbide Burr 3/8″ x 3/4″ Cylindrical End Cut 1/4″ Shank Double Cut Die Grinder

SB-3 Cylindrical End Cut Carbide Burr – 3/8″ x 3/4″ (1/4″ Shank)

This listing is for a versatile, professional-grade SB-3 solid tungsten carbide burr. This 3/8″ diameter tool is a “must-have” for any fabricator’s, welder’s, or mechanic’s toolbox.

The SB-3 shape is cylindrical with cutting flutes on the end face. This critical design allows you to perform plunge cuts and bottom-facing inside of a slot, unlike standard “SA” burrs which only cut on the sides.

Technical Specifications & Improvements

• Model: SB-3 (Cylindrical Shape with End Cut)

• Material: Solid Tungsten Carbide (Lasts 10x-20x longer than HSS bits).

• Cut: Double Cut (Cross-Cut) – The preferred cut for general-purpose work.

• Cutter Diameter: 3/8″ (0.375″)

• Length of Cut (Flute Length): 3/4″ (0.750″)

• Shank Diameter: 1/4″ (0.250″) – Fits all standard die grinders.

Why Choose This Double-Cut Carbide Burr?

1. Double Cut (Cross Cut) Pattern: This burr features a double-cut pattern that produces fine, granular chips. This results in:

• Smoother Finishes: Reduces gouging and pulling.

• Greater Control: Easier to handle on contoured surfaces.

• Wide Application: Ideal for harder materials like Steel, Stainless Steel, Cast Iron, and Titanium.

2. Solid Tungsten Carbide Material: Engineered for high-heat and high-speed applications. The solid carbide construction maintains extreme sharpness and will not soften or dull when used on hardened metals.

3. SB-3 End-Cut Design: The cutting flutes on the face of the burr allow you to mill the bottom of a slot or pocket flat, or plunge-cut into material like a drill bit.

Common Applications

• Welding: Removing weld beads and spatter.

• Deburring: Cleaning up sharp edges on freshly cut metal.

• Automotive: Cylinder head porting and engine block cleanup.

• Fabrication: Contouring and shaping hard metals.

• Sculpting: Ideal for carving steel and other hard materials.

Safety Warning: Always use this tool in a proper Die Grinder or heavy-duty rotary tool. Always wear ANSI-approved eye protection (face shield recommended) and gloves.