FANAR solid carbide end mill, model X-MILL 440N, diameter 4.0 mm, 11/57, Z4, HB6, VHM

FANAR solid carbide end mill X-MILL 440N, diameter 4.0 mm, is a four-flute (Z4) VHM cutting tool designed for precision milling and semi-finishing in metalworking. The cutter features HB6 geometry and a robust tungsten carbide body that provides high rigidity for stable cutting with small-diameter tools. AT 440N and 11/57 parameters indicate the tool's design orientation toward hard-material finishing where accuracy and surface quality are required.

Advantages

The solid carbide construction ensures wear resistance and consistent edge retention when machining harder alloys. Four flutes (Z4) combine efficient chip evacuation with a good balance between feed rate and surface finish. HB6 geometry improves tool strength and reduces vibration during high-speed or interrupted cuts. The 4.0 mm diameter offers access to narrow features and fine detail while maintaining rigidity compared with slimmer cutters.

Suitable for

• Precision finishing and semi-finishing on hardened steels and high-strength alloys
• Milling of small features, slots and pockets where a 4.0 mm cutter is required
• High-speed machining with emphasis on surface quality
• Operations requiring high rigidity and low runout in compact toolpaths

Key specifications

• Material: solid tungsten carbide (VHM)
• Number of flutes: 4 (Z4)
• Cutting diameter: 4.0 mm
• Geometry: HB6
• Application focus: finishing and semi-finishing on hard materials

How to use

Select appropriate spindle speed and feed per tooth based on the workpiece material and machine rigidity; start with manufacturer-recommended cutting parameters for hard materials and adjust to optimize surface finish and tool life. Ensure proper tool clamping with minimal runout and use suitable coolant or air blast to assist chip evacuation when machining abrasive or sticky alloys. For interrupted cuts or deep pockets, reduce radial engagement or use climb milling where appropriate to minimize tool stress.

Usage recommendations

Use the FANAR X-MILL 440N for applications demanding dimensional accuracy and improved surface quality on hard metals. Monitor wear and change the tool when cutting edges become dull to prevent increased forces and poor finishes.