Spiral router bit Finishing VHM Z2 D3 I23 L70 S6 RH negative

Two-flute VHM spiral end mill 3x23 mm from the SB51 series – ideal edge quality and high efficiency

Index: SB51.03.023.070.06R

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

Design advantages and technical properties:

• Finishing geometry 2 (downward thrust): Two cutting edges directing the material downwards ensure a clean upper edge of the raw material and effectively prevent chip lifting of veneer or laminate.
• Premium sintered carbide monolith (VHM): The stiff, monolithic construction prevents tool deformation during operation under high forces, allowing for the maintenance of narrow dimensional tolerances.
• Option to apply PVD coating: The option to apply protective layers (including TiSiN or PLATINIUM) allows for multiple extensions of the edge lifetime, reduces friction, and protects against overheating.
• Low roughness of the shank: The shaft surface with a roughness indicator of Ra ≤ 0.3 µm protects the end mill from spinning in the holder and eliminates the risk of wear on the cone in the spindle.
• Dynamic balancing to standard G2.5: Certified static-dynamic balancing in the stringent class G2.5 (according to ISO/EN) reduces noise and vibrations generated at high speeds (up to 18,000 RPM).

Applications and range of use:

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

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 particle board.