Spiral router bit Finishing VHM Z2 D3,17 I12,7 L50,8 S6,35 RH negative

Two-flute VHM spiral mill 3.17x12.7 mm from the SB51 series – ideal edge quality and high efficiency

Index: SB51.32.127.508.64R

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

Construction advantages and technical properties:

• Finishing geometry 2 (downward chip removal): Two cutting edges directing the chips downward ensure a clean top edge of the workpiece and effectively prevent the lifting of veneer or laminate.
• Monolith of premium sintered carbide (VHM): The rigid, monolithic construction prevents deformation of the mill during operation under high force, allowing for narrow dimensional tolerances to be maintained.
• Possibility of PVD coating application: The option to apply protective coatings (including TiSiN or PLATINIUM) allows for multiple extensions of the edge lifespan, reduces friction, and protects against overheating.
• Low roughness of the shank: The surface of the shank with a roughness index of Ra ≤ 0.3 µm protects the mill from rotating in the collet and eliminates the risk of wear on the spindle cone.
• Dynamic balancing to G2.5 standard: Certified static-dynamic balancing in the high category of G2.5 (according to ISO/EN) reduces noise and decreases vibrations generated at high speeds (up to 18,000 RPM).

Intended use and scope:

The tool is designed for cutting operations, peripheral milling, grooving, notching, and edge finishing machining.

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