Accupro 12183149 Corner Radius End Mill 3/4in 4 Flute Ticn

Product Description

The ACCUPRO 12183149 is a solid carbide corner radius end mill designed for precision milling in ferrous and hardened materials. It features a 3/4 inch diameter with a 0.09 inch corner radius and four right-hand spiral flutes, delivering smooth cutting action and extended tool life. The TiCN (Titanium Carbonitride) coating increases surface hardness and reduces built-up edge, making it well suited for high-speed operations in steel, stainless, and cast iron. With a micrograin carbide substrate, this tool holds tight tolerances and resists chipping under aggressive feed rates. Machinists and toolroom professionals install this type of end mill in CNC machining centers and manual mills for profiling, slotting, and finishing applications.

This end mill is built for industrial cutting environments where a standard square-end tool would leave sharp corners or cause stress concentrations in the workpiece. The long-length geometry with a 2.25 inch length of cut and 5 inch overall length allows access into deeper pockets and cavities without tool holder interference. It is a single-end, centercutting design, meaning it can plunge directly into the material, which is useful for ramping or helical entry paths in CNC programs. Right-hand cutting direction is standard for conventional CNC spindle rotation.

Key Features

• 0.09 inch corner radius reduces stress concentration and improves surface finish in milled pockets
• TiCN coating provides increased hardness and wear resistance over uncoated carbide
• Micrograin solid carbide substrate maintains edge integrity at elevated cutting temperatures
• Four flutes with right-hand spiral geometry for efficient chip evacuation and smooth finish
• Centercutting design enables direct plunge, ramp, and helical interpolation entry
• Long-length configuration with 2.25 inch LOC and 5 inch OAL for deep pocket access

Compatibility

Designed as a direct-fit replacement or standard toolroom end mill for CNC machining centers and manual vertical mills accepting a 3/4 inch diameter straight shank with a standard collet or end mill holder.

Installation Notes

Installation should be performed by a qualified machinist or CNC toolsetter. Ensure the spindle is fully stopped and the machine is in an estop or locked-out state before changing tooling. Secure the shank to the published shank diameter tolerance range using a properly sized collet or hydraulic holder to minimize runout. Verify tool reach and holder clearance before running the first cut, particularly in deep-pocket applications given the extended overall length.