Spiral router bit with neck for 3D reliefs VHM Z3 D20 I40 L250 S20 RH Roughing positive

Three-fluted VHM roughing end mill with undercut for 3D models – upward chip evacuation

Index: SR34.20.040.250.20R

Industrial roughing end mill made of solid carbide (VHM) with profiled teeth, an undercut body (neck), and upward chip evacuation (positive geometry). Designed for efficient preliminary machining, deep cutting, and moulding of matrices and 3D models in aluminium, plastics, and composites. The chip breaker shreds the cut material into smaller pieces, reducing cutting resistance, minimising vibrations, and preventing chip clogging in the channels. The tapered body eliminates the risk of the gripping part rubbing against the material walls during deep penetration. The right-hand helical design efficiently removes chips from the bottom of the cut, ensuring a clean working environment. The ground shank in class H6 guarantees axial accuracy and protects the CNC machine spindle.

Design advantages and technical properties:

• Undercut design (neck): The tapered body prevents collisions with the material during deep milling, facilitates chip removal, and reduces friction.
• Roughing geometry with chip breaker: The profiled blades break the material into fine particles, reducing cutting resistance and preventing chip jamming.
• Three-fluted system (Z3): Three cutting edges provide a high level of rigidity, allowing operation with higher feed rates.
• 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 prevents aluminium from adhering to the body.
• Solid carbide (VHM): The rigid structure dampens vibrations and ensures a long tool life 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 balance G2.5: Compliance with ISO standards enables safe and smooth operation at very high speeds.

Intended use and application range:

This tool is intended for rough cutting operations, deep cutting, welding, and preliminary shaping of 3D models on CNC machines.

Used for machining materials such as: aluminium, plastics, and composite panels like CORIAN® and HPL.