Spiral router bit Finishing VHM Z2 D8 I42 L90 S8 RH negative

Two-flute VHM spiral end mill 8x42 mm from the SB51 series – ideal edge quality and high performance

Index: SB51.08.042.090.08R

High-performance spiral end mill made from solid sintered carbide (VHM) from the SB51 line, designed for precise cutting, shaping, grooving, and slotting on overhead spindle milling machines and CNC centres. The tool utilises two-flute spiral geometry in a Z2 negative configuration, which enforces effective chip removal downwards. The use of high-quality micro-grain carbide ensures high resistance to abrasive wear and significantly extends the lifespan of the cutting edge. The ground shank in tolerance class H6 eliminates radial runout, protecting the spindle bearing system and guaranteeing an excellent standard of finish on the machined material.

Design advantages and technical properties:

• Finishing geometry 2 (downward ejection): Two cutting edges directing the chips downward guarantee a clean upper edge of the workpiece and effectively prevent lifting of veneer or laminate.
• Premium sintered carbide monolith (VHM): Rigid, monolithic construction prevents distortion of the mill during high force work, allowing for narrow dimensional tolerances to be maintained.
• Possibility of PVD coating: The option to apply protective coatings (including TiSiN or PLATINIUM) allows for several times extension of the edge lifespan, 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 mill from rotating in the holder and eliminates the risk of wear on the spindle cone.
• Dynamic balancing in G2.5 standard: Certified static-dynamic balancing in an advanced G2.5 class (according to ISO/EN) eliminates noise and reduces vibrations generated at high speeds (up to 18,000 RPM).

Intended use and application range:

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

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