Drill bit Proxxon 28760 milling drill bit 5 mm, 1 pc

Proxxon 28760 is a single 5 mm milling drill bit designed for use in compact machine tools and standard tool holders. Manufactured for precision tasks, this cutter is intended for drilling and milling in a range of materials including steel, cast steel, non-ferrous metals and plastics, depending on machine power and material compatibility. Supplied as one piece with a 3 mm (7/64") shank and a 5 mm cutting diameter, it is suitable for applications that require vibration-free operation and high dimensional accuracy.

Advantages

The Proxxon 5 mm milling drill bit provides vibration-free milling for improved surface finish and repeatable accuracy. Its geometry and build are optimized for work on extremely hard materials as well as softer substrates, ensuring consistent chip removal and reduced risk of tool chatter. The small, standardized shank fits typical collets and tool holders, allowing quick installation and reliable concentricity during precision engraving, circuit-board milling or technical model work.

Suitable for

• Precision drilling and milling in steel and cast steel
• Milling and drilling non-ferrous metals
• Plastics machining and model making
• Engraving and circuit-board milling
• Technical and workshop prototyping

Key specifications

• Cutting diameter: 5 mm
• Shank diameter: 3 mm (7/64")
• Quantity: 1 piece
• Intended materials: steel, cast steel, non-ferrous metals, plastics
• Designed for vibration-free, high-accuracy milling

How to use

Install the milling drill bit into a compatible collet or tool holder ensuring secure clamping of the 3 mm shank to maintain concentricity. Set the machine speed and feed appropriate for the work material—use lower speeds and light feeds for hard steels and higher speeds for softer non-ferrous metals and plastics. Ensure the workpiece is firmly clamped to prevent movement. Use steady, controlled passes and avoid excessive axial force to prolong tool life and maintain dimensional accuracy.

Usage recommendations

Before milling, verify machine compatibility with a 3 mm shank and choose cutting parameters recommended for the specific material. Apply appropriate coolant or air blast when machining metals to clear chips and control temperature. For delicate tasks such as circuit-board milling or engraving, use minimal depths of cut and fine feed increments to ensure clean edges and prevent material tear-out.