Spiral router bit for acrylic & plastics with low helix VHM Z1 D8 I12 L60 S8 RH Finishing positive

Single-flute spiral cutter VHM for PLEXI with upward chip ejection – clean bottom edge and efficient chip removal

Index: ST28.08.012.060.08R

Industrial single-flute spiral cutter made from solid carbide (VHM) with positive geometry (upward chip ejection). The tool is equipped with a small spiral line tilt, which effectively prevents lifting and vibrations of the machined material. It performs excellently in precision cutting as well as edge joining and aligning thin materials with thicknesses from 1 mm to 8 mm on CNC machines and overhead milling machines. The finishing geometry with a single cutting edge (Z1) combined with a polished fluted groove prevents sticking and melting of the material. The ground shank in precision class H6 eliminates radial runout, protecting the machine's drive system and ensuring stability during machining.

Design advantages and technical properties:

• Dedicated to thin materials (1–8 mm): Reduced spiral eliminates upward pulling forces, preventing the lifting of flimsy sheets.
• Single-edge Z1 (positive) design: The single cutting edge allows for efficient chip removal, minimizing friction and the risk of overheating the material.
• Polished fluted groove: The mirror-like surface of the spiral prevents sticking and secondary welding of chips to the tool body.
• Finishing geometry of the blade: Precisely ground edge ensures perfect edge quality without fraying.
• Low grip roughness (Ra ≤ 0.3 µm): The ground surface of the shank prevents slipping in the holder and protects the spindle cone from wear.
• Dynamic balancing in class G2.5: Balancing in accordance with ISO standards ensures vibration-free operation at very high speeds.

Intended use and scope:

The tool is designed for cutting operations as well as edge joining and aligning edges in thin plastic sheets on CNC machining centres.

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