Spiral router bit Finishing VHM Z2 D6 I27 L70 S6 RH positive

Two-flute ball-nose spiral end mill VHM, positive from the SI01 series – precise carving and 3D machining

Index: SI01.06.027.070.06R

Industrial ball-nose spiral end mill made from solid carbide (VHM) from the SI01 series, with positive geometry (chip removal upwards). Designed for precise carving, machining of 3D models, cutting, as well as welding and edge trimming on CNC machining centres and overhead milling machines. The ball-nose front radius combined with finishing geometry of the cutting edges (Z2) allows for perfectly smooth, flowing surface transitions when machining bas-reliefs and 3D spatial forms. The right-handed helical flute efficiently evacuates chips upwards, protecting the cutting zone from overheating. The ground shank with an accuracy class of H6 eliminates radial runout, safeguarding the drive system and ensuring high process stability.

Design advantages and technical properties:

• Two-flute ball design Z2 (positive): The rounded front profile enables precise contour milling, bas-relief carving, and spatial modelling in 3D.
• Positive design with upward chip removal: The right-handed spiral effectively evacuates chips from deep grooves and 3D spaces, ensuring a clean bottom edge of the machined material.
• Finishing geometry of the cutting edges: Precisely ground cutting edges guarantee a high standard of surface finish without the need for manual grinding.
• Solid carbide (VHM): The rigid monolithic structure reduces tool deflection under load and maintains dimensional precision.
• Low shank roughness (Ra ≤ 0.3 µm): The ground shank surface prevents slipping in the tool holder and protects the spindle taper from wear.
• Dynamic balancing in class G2.5: Balancing in accordance with ISO standards guarantees stability and quiet operation at maximum rotational speeds.

Intended use and range of applications:

The tool is intended for milling operations on 3D models, carving, cutting, as well as welding and edging on CNC machines.

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