Spiral router bit with neck for 3D reliefs VHM Z3 D16 I40 L150 S16 RH Roughing positive

Three-flute VHM spiral mill with undercut for 3D models – upward chip removal

Index: SR34.16.040.150.16R

Industrial roughing mill made from solid carbide (VHM) with a profiled cutting edge, body undercut (neck) and upward chip removal (positive geometry). Designed for efficient rough machining, deep cutting and forming of dies and 3D models in aluminium, plastics and composites. The chip breaker reduces the machined material into smaller pieces, which limits cutting resistance, reduces vibrations and prevents chip evacuation channels from clogging. The narrowed body eliminates the risk of the gripping part rubbing against the material walls during deep penetration. The right-hand spiral efficiently removes the workpiece from the bottom of the cut, ensuring a clean working environment. The ground shank in H6 tolerance guarantees axial precision and protects the CNC machine spindle.

Design advantages and technical properties:

• Undercut design (neck): The narrowed body prevents collisions with the material during deep milling, facilitates chip removal and reduces friction.
• Roughing geometry with chip breaker: The profiled blades break down the workpiece into fine particles, reducing cutting resistance and preventing chip jamming.
• Three-flute design (Z3): Three cutting edges provide a high level of rigidity, enabling operation at higher feed speeds.
• Upward chip evacuation (positive): The right-hand chip channel lifts dust and chips, protecting the bottom of the cut and the underside of the material from damage.
• Polished chip grooves: The smooth surface of the spiral reduces friction and counteracts aluminium sticking to the body.
• Solid carbide (VHM): The rigid structure dampens vibrations and ensures a long lifespan when machining with large allowances.
• Low roughness of the shank (Ra ≤ 0.3 µm): The ground shank prevents slipping in the holder and protects the spindle taper from wear.
• Dynamic balancing G2.5: Compliance with ISO standards ensures safe and smooth operation at very high speeds.

Purpose and range of application:

The tool is intended for rough cutting, deep carving, joining and preliminary shaping of 3D models on CNC machines.

Used in processing materials such as: aluminium, plastics and composite boards like CORIAN® and HPL.