Spiral router bit Finishing VHM Z2 D4 I15 L50 S4 RH negative

Two-flute VHM spiral cutter 4x15 mm from the SB51 series – ideal edge quality and high performance

Index: SB51.04.015.050.04R

High-performance spiral cutter made from solid sintered carbide (VHM) from the SB51 line, designed for precise cutting, shaping, grooving, and slotting on top spindle milling machines and CNC centres. The tool features a two-flute spiral geometry in Z2 configuration with a negative arrangement, which ensures effective chip removal downwards. The use of high-grade micrograin carbide provides high resistance to abrasive wear and significantly extends the cutting edge's durability. The ground shank with a tolerance class of H6 mitigates radial runout, protecting the spindle bearing system and ensuring an excellent standard of finish on the machined material.

Construction advantages and technical properties:

• Finishing geometry 2 (downward discharge): Two cutting edges directing the material downwards guarantee a clean upper edge of the workpiece and effectively prevent lifting of veneer or laminate.
• Premium sintered carbide monolith (VHM): The rigid, monolithic construction prevents deformation of the cutter during operation under high force, allowing for tight dimensional tolerances.
• Possibility of applying PVD coating: The option to apply protective layers (e.g., TiSiN or PLATINIUM) allows for significantly extending the lifespan of the edges, reduces friction, and protects against overheating.
• Low roughness of the shank: The shank surface with a roughness index of Ra ≤ 0.3 µm prevents the cutter from rotating in the holder and eliminates the risk of wear on the spindle taper.
• Dynamic balancing to G2.5 standard: Certified static-dynamic balancing in the stringent class G2.5 (according to ISO/EN) reduces noise and vibration generated at the highest speeds (up to 18,000 RPM).

Intended use and range of applications:

The tool is designed for cutting, contour milling, grooving, slotting, and edge finishing operations.

It performs excellently in machining materials such as: soft and hard wood, raw and laminated MDF board, raw and laminated plywood, and raw and laminated particleboard.