Spiral router bit for acrylic & plastics with low helix VHM Z1 D4,76 I15,87 L63,5 S4,76 RH Finishing positive

Single-edged spiral milling cutter VHM for PLEXI with upward chip discharge – clean bottom edge and efficient chip removal

Index: ST28.48.159.635.48R

Industrial single-edged spiral milling cutter made from solid carbide (VHM) with positive geometry (upward chip discharge). The tool is equipped with a small helix angle, effectively preventing pulling and vibrations of the machined material. It excels in precise cutting as well as edge bonding and levelling of thin materials from 1 mm to 8 mm thick on CNC machines and overhead milling machines. The finishing geometry with a single blade (Z1) combined with a polished chip groove prevents adhesion and melting of the material. The ground shank with H6 accuracy class eliminates radial run-out, protecting the machine’s drive system and ensuring machining stability.

Construction advantages and technical properties:

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

Intended use and application range:

The tool is intended for cutting operations as well as edge bonding and levelling in thin plastic sheets on CNC machining centres.

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