Spiral router bit for acrylic & plastics VHM Z1 D3 I6 L60 S3 RH Finishing negative

Single-flute VHM spiral end mill for PLEXI with downward chip exit – ideal upper edge

Index: ST51.03.006.060.03R

Industrial single-flute spiral end mill made of solid carbide (VHM) with negative geometry (downward chip exit). Designed for precise cutting, edge jointing and trimming, pocketing, and grooving in plexiglass, plastics, and composites on CNC machines and overhead milling machines. The left-hand helical flute presses the workpiece against the table and evacuates chips downwards, making it ideal for machining small parts and flexible sheets of material. The special finishing geometry with one 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 in accuracy class H6 eliminates radial runout, protecting the machine's drive system.

Design features and technical properties:

• Single-flute Z1 design (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 re-welding of chips to the body.
• Finishing geometry of the blade: Precisely ground edge ensures perfect edge quality without fraying or damage to the upper surface.
• Solid carbide (VHM): High structural stiffness of VHM eliminates vibrations and allows for dimensional stability.
• Low shank roughness (Ra ≤ 0.3 µm): The ground shank surface protects the holder and spindle cone from wear and prevents slippage.
• 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, edge jointing and trimming, pocketing, and grooving operations in plastics on CNC machining centres.

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