Spiral router bit Roughing VHM Z3 D16 I120 L170 S16 RH positive NaDia

Three-flute roughing spiral end mill VHM for lock cavities

Index: SF30.16.120.170.16XR

Industrial spiral end mill made of solid carbide (VHM) from the SF30 series, designed for efficient roughing and chiselling of deep cavities for door locks on CNC machining centres and overhead milling machines. The tool features a three-flute spiral geometry with a roughing profile (Z3) and upward chip evacuation (positive), which ensures efficient chip removal and a clean lower edge of the material. The roughing tooth design with a chip breaker reduces cutting resistance and decreases spindle load. The extended body with a taper allows for deep penetration into the material without the risk of rubbing or burning the edges. The ground shank in accuracy class H6 eliminates radial runout, protecting the drive system and ensuring process stability.

Design advantages and technical properties:

• Three-flute roughing design Z3 (positive): Dedicated roughing profile breaks chips into small pieces, reduces cutting resistance, efficiently evacuates chips upwards and guarantees a clean lower edge of the machined element.
• Solid carbide (VHM): The rigid monolithic structure reduces tool deflection under load and allows for high dimensional precision.
• Extended body with a recess: The recessed non-cutting part provides technological clearance, allowing for deep chiselling of lock cavities without the risk of the body rubbing against the material walls.
• Low shank roughness (Ra ≤ 0.3 µm): The ground surface of the shank prevents slipping in the tool holder and protects the spindle taper from wear.
• Dynamic balancing in class G2.5: Balancing according to ISO standards eliminates vibrations and reduces noise at high rotational speeds.

Purpose and range of application:

The tool is designed for chiselling and rough milling of cavities for door locks and cutting and deep recessing in door leaves on CNC machines.

It excels in machining materials such as: softwood and hardwood, plywood, and raw particle board and raw MDF.