Spiral router bit for acrylic & plastics VHM Z1 D4 I12 L60 S6 RH Finishing negative

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

Index: ST51.04.012.060.06R

Industrial single-edge spiral milling cutter made from solid carbide (VHM) with negative geometry (downward chip removal). Designed for precise cutting, edging, and flattening, grooving and milling in plexiglass, plastics, and composites on CNC machines and overhead milling machines. The left-hand threaded design compresses the workpiece against the table and removes chips downwards, making it ideal for machining small parts and flexible sheets of materials. The specially finished geometry with a single blade (Z1) combined with a polished chip flute effectively prevents material sticking and melting, providing a perfectly finished upper surface edge. The ground shank in accuracy class H6 eliminates radial runout, protecting the machine 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 operating table.
• Polished chip flute: The mirror-like surface of the spiral counteracts chip sticking and secondary welding to the body.
• Finishing edge geometry: Precisely ground edge ensures perfect edge quality without fraying and damage on the upper surface.
• Solid carbide (VHM): The high structural rigidity of the VHM eliminates vibrations and allows for dimensional stability.
• Low shank roughness (Ra ≤ 0.3 µm): The ground shank surface protects the holder and spindle taper from wear and prevents slippage.
• Dynamic balancing in class G2.5: Balancing in accordance with ISO standards guarantees vibration-free operation at very high speeds.

Purpose and range of applications:

The tool is designed for cutting, edging, and flattening operations, grooving and milling in plastics on CNC machining centres.

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