Spiral router bit Finishing VHM Z3 D20 I60 L120 S20 RH positive TiSiN

Three-bladed VHM spiral end mill with chip breaker and TiSiN coating 20x60 mm from the SC23 series – maximum lifespan and processing efficiency 

Index: SC23.20.060.120.20TR

High-performance spiral end mill made from solid sintered carbide (VHM) from the SC23 line, designed for formatting, cutting, and roughing-finishing operations on overhead spindle milling machines and CNC centres. The tool features a three-blade spiral geometry in a Z3R positive configuration, which ensures immediate upward dust and chip removal and maintains perfect cleanliness of the lower edge. The applied TiSiN protective coating significantly reduces friction, prevents overheating of the cutting edges, and greatly extends the tool's working time. The ground shank in tolerance class H6 eliminates radial runout, protecting the spindle's bearing system and ensuring flawless detail quality.

Construction advantages and technical properties:

• Advanced TiSiN protective coating: The PVD layer with microstructural hardness of 3570 HV 0.05, thickness of 1–4 µm, and low friction coefficient (0.5) displays resistance to thermal loads, reduces resistance, and significantly extends tool life.
• Z3R chip breaker geometry (upward discharge): The arrangement of three cutting edges with a chip breaker lowers operating resistance, enhances the discharge of crushed material, and allows for rapid feed while achieving an ideal finish on the lower edge.
• Premium sintered carbide monolith (VHM): The rigid monolithic design limits tool deflection under load and ensures high dimensional precision.
• Low roughness of the clamping part: The shank surface with a roughness indicator of Ra ≤ 0.3 µm protects the end mill from rotating in the holder and eliminates the risk of cone wear in the spindle.
• Dynamic balancing to G2.5 standard: Certified static-dynamic balancing in the strict G2.5 class (according to ISO/EN) reduces noise and vibration generated at the highest speeds.

Purpose and range of application:

The tool is intended for cutting, peripheral milling, dovetailing, and medium roughing and finishing operations.

It performs excellently in the machining of materials such as soft and hard wood, raw MDF board, plywood, and raw particle board.