Helical Solutions 83243 Corner Radius End Mill 3/16 in 4 Flute

Product Description

The HELICAL SOLUTIONS 83243 is a solid carbide corner radius end mill designed for precision metal removal in demanding machining environments. It carries a 3/16 inch (0.1875 inch) mill diameter with a 0.0100 inch corner radius, a 5/8 inch length of cut, and a 2.5 inch overall length. The four-flute, single-end geometry supports both roughing and finishing passes. A Tplus PVD coating enhances wear resistance and thermal stability. The variable pitch design reduces harmonic chatter during aggressive cuts. This tool is intended for use by machinists and CNC operators working with high-performance tooling setups requiring tight tolerances and consistent surface finish.

The 83243 is engineered primarily for stainless steel, high-temperature alloys, superalloys, titanium, and hardened steel. It also performs in steel and cast iron applications. The right-hand cut, right-hand spiral flute configuration makes it compatible with standard vertical and horizontal CNC machining centers. The straight-cylindrical shank seats in high precision toolholders, which is the recommended holder type for this tool. It is well suited to precision component work in aerospace, medical, and industrial manufacturing where tight corner radius tolerances are critical.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard and exotic materials
• Tplus PVD coating provides thermal and abrasion resistance for extended tool life
• Variable pitch reduces chatter and improves surface finish at aggressive feed rates
• 0.0100 inch corner radius with a tolerance of -0.0020 to 0.0020 inches for consistent edge geometry
• Centercutting design allows plunge entry without a pre-drilled hole
• Right-hand flute direction and right-hand cutting for use with standard CNC spindles

Compatibility

Designed for use with high precision toolholders. Primary workpiece materials include stainless steel, high-temperature alloys, superalloys, titanium, and hardened steel. Secondary workpiece materials include steel and cast iron. Part of the HSV-4 series.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the machine spindle is fully stopped and the toolholder is clean and free of chips before seating the tool. Use a high precision toolholder to stay within the 0.0005 inch maximum TIR specification. Verify runout with a dial indicator before beginning a production run to avoid premature edge wear or part-dimension errors.