Rotary burr GRAPHITE 55H372 — single-piece metal cutting/engraving tool, 35 g

GRAPHITE rotary burr 55H372 is a single-piece carbide cutting and shaping accessory for rotary tools, supplied as one piece with a net weight of 35 g. Shaped as an ogival (rounded) head, this burr is intended for metalworking tasks such as material removal, deburring, profiling and engraving on metals, aluminium and plastics. It is designed for use with straight grinders and die grinders; it is not intended for use with standard handheld drills. The cutter’s double-groove tooth pattern reduces chip size and improves chip evacuation, supporting consistent cutting performance in demanding conditions.

Advantages

The tool is made of cemented carbide which provides high hardness and abrasive wear resistance for extended service life even under heavy use. Double notches in the cutting profile enable efficient material removal with smaller chips, reducing load on the cutting edges and improving stability during operation. The ogival rounded shape offers controlled, precise contact for profiling and finishing of edges and contours. The burr’s diameter and geometry are suitable for medium-speed operation, balancing cutting performance and durability.

Suitable for

• Removing excess material and deburring metal workpieces
• Profiling and shaping contours on aluminium and non-ferrous parts
• Engraving and detail work on plastics and soft metals
• Cleaning weld seams and preparing edges for finishing

Key specifications

• Head shape: ogival (rounded) — type F
• Material: cemented carbide (hard metal)
• Tooth pattern: double notches for improved chip removal
• Dimensions: 12 mm head diameter × 25 mm head length (overall geometry for medium speeds)
• Weight (net): 35 g per piece
• Recommended tool type: straight grinder / die grinder (not for use with handheld drill)

How to use

Mount the GRAPHITE 55H372 burr securely in the collet of a compatible straight grinder or die grinder, ensuring proper clamping and concentricity. Operate the tool at medium spindle speeds consistent with the burr diameter and the manufacturer's guidelines for carbide rotary cutters. Apply moderate, steady pressure and move the burr along the workpiece to remove material, deburr edges or shape contours. Maintain a consistent feed and avoid side-loading or excessive force which can reduce tool life. Use appropriate cutting fluids or air cooling if recommended for the specific material and application.

Usage recommendations

Ensure proper personal protective equipment: eye protection, gloves and respirator or dust extraction when machining metals or plastics. Inspect the burr before use for secure mounting and signs of damage. For best results on hard metals, use controlled feeds and intermittent contact to avoid overheating. Do not use the burr with a drill; operate only with compatible rotary grinders designed for high-speed rotary cutters.