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

Three-flute roughing end mill VHM for lock sockets

Index: SF30.16.120.170.16R

Industrial spiral end mill made from solid carbide (VHM) from the SF30 series, designed for efficient rough machining and deep socket chiselling 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 a positive chip evacuation upwards, ensuring efficient chip removal and a clean lower edge of the material. The roughing teeth with a chip breaker reduce cutting resistance and lower spindle load. The extended body with taper allows for deep penetration into the material without the risk of rubbing or burning the edges. The ground shank in accuracy class H6 minimises radial runout, protecting the drive system and ensuring process stability.

Design advantages and technical properties:

• Three-flute roughing design Z3 (positive): The dedicated roughing profile breaks chips into small pieces, lowers cutting resistance, effectively evacuates chips upwards, and guarantees a clean lower edge of the machined element.
• Solid carbide (VHM): The rigid monolithic construction reduces tool deflection under load and maintains high dimensional precision.
• Extended body with counter-bore: The counter-bored non-cutting part provides technological clearance, allowing for deep chiselling of lock sockets 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 cone from wear.
• Dynamic balancing in class G2.5: Balancing according to ISO standards eliminates vibrations and reduces noise at high rotational speeds.

Intended use and scope of application:

The tool is intended for chiselling and rough milling of sockets for door locks, as well as cutting and deep sinking in door panels on CNC machines.

It performs excellently when machining materials such as: soft and hardwood, plywood, as well as raw particle board and raw MDF.