The Rittal 4050.887 milling cutter is built for precise material removal on aluminium, copper, plastic and steel. With a 12 mm shank and a 10 mm cutting diameter, this solid cutter suits small-diameter profiling, slotting and finishing operations in both manual and CNC milling setups. Its geometry and material selection are intended to provide consistent cutting performance across non-ferrous and ferrous substrates while fitting standard 12 mm collets and holders.
Advantages
The cutter combines a compact 10 mm working diameter with a 12 mm shank for improved rigidity in small-tool applications. Its cutting geometry is optimised for a balance of chip evacuation and surface finish when working with aluminium, copper and plastics, and is also suitable for light-duty steel machining. The tool’s standard shank size simplifies mounting in common milling spindles and router chucks, enabling quick tool changes and repeatable concentricity.
Suitable for
- Precision profiling and contouring on aluminium and copper components
- Slotting and pocketing in plastic parts such as PMMA or ABS
- Fine finishing and deburring of small ferrous parts under light cuts
- Machining operations in small CNC routers and manual mills with 12 mm collets
When it may not be suitable
This cutter is not designed for heavy roughing or large material removal on hard steels; its 10 mm cutting diameter and small flute volume limit its capacity for high-feed, heavy-duty cuts. For high‑volume production on hardened materials or for very deep slotting operations, a larger-diameter or purpose-built roughing tool would be more appropriate.
Key specifications
- Shank diameter: 12 mm
- Cutting (working) diameter: 10 mm
- Suitable materials: aluminium, copper, plastics, steel (light operations)
- Typical applications: profiling, slotting, contouring, finishing
How to use
Mount the milling cutter securely in a compatible 12 mm collet or tool holder, ensuring correct runout and concentricity. Select spindle speed and feed rate appropriate for the material: higher speeds and moderate feeds for aluminium and plastics, reduced speeds and lighter feeds for steel. Use multiple light passes rather than a single deep cut to preserve tool life and achieve a consistent surface finish. Maintain adequate chip evacuation and, where appropriate, use coolant or air blast to clear swarf when machining metals.
What to consider before purchase
- Confirm your machine accepts a 12 mm shank tool and provides suitable clamping accuracy.
- Match cutter geometry and coating (if applicable) to the primary work material for optimal life.
- Plan cutting parameters for small-diameter tooling to avoid excessive deflection and premature wear.
Usage recommendations
For best results use this 10 mm cutter for light finishing and profiling passes; when machining aluminium and plastics, employ higher spindle speeds with moderate feed to maximise surface quality, and reduce speed and depth of cut when working with steel. Regularly inspect tool edges and check runout to maintain precision.
