Spiral router bit for acrylic & plastics VHM Z1 D4 I12 L60 S4 RH Finishing negative

Single-edged spiral milling cutter VHM for PLEXI with downward chip removal – ideal upper edge

Index: ST51.04.012.060.04R

Industrial single-edged spiral milling cutter made from solid carbide (VHM) with negative geometry (downward chip removal). Designed for precise cutting, edge bonding and alignment, mortising and grooving in PLEXI, plastics, and composites on CNC machines and overhead spindle mills. The left-hand helical flute pushes the work material down to the table and removes chips downwards, which is ideal for machining small parts and flexible plastic sheets. The special finishing geometry with a single cutting edge (Z1) combined with a polished chip groove effectively prevents material sticking and melting, ensuring a perfectly finished edge on the upper surface. The ground shank with an accuracy class of H6 eliminates radial runout, protecting the machine's drive system.

Design advantages and technical properties:

• Single edge design Z1 (negative): The single cutting edge efficiently removes chips downwards, stabilising the material on the work table.
• Polished chip groove: The mirror-like surface of the spiral counteracts sticking and secondary welding of chips to the body.
• Finishing edge geometry: Precisely ground edge ensures perfect edge quality without fraying or damage on the upper surface.
• Solid carbide (VHM): High structural rigidity of VHM eliminates vibrations and maintains dimensional stability.
• Low shank roughness (Ra ≤ 0.3 µm): Ground surface of the shank protects the holder and spindle taper from wear and prevents slipping.
• Dynamic balance class G2.5: Balancing in accordance with ISO standards guarantees vibration-free operation at very high speeds.

Intended use and application range:

The tool is designed for cutting, edge bonding and alignment, mortising, and grooving operations in plastics on CNC machining centres.

Used for machining materials such as: PLEXI (acrylic), plastics, ALUCOBOND® sheets, ALUCOBOND® A2, as well as composites like CORIAN® and HPL.