Helical Solutions 34377 Corner Radius End Mill 3/4in 5 Flute

Product Description

The HELICAL SOLUTIONS 34377 is a solid carbide corner radius end mill designed for high-performance material removal in demanding machining environments. Built on the HEV-5 platform, this single-end, center-cutting tool features a 0.75 inch mill diameter, a 1.625 inch length of cut, and a 0.0300 inch corner radius. The five-flute geometry with variable pitch and right-hand spiral flutes supports both roughing and finishing operations in a single tool. An APLUS PVD coating extends tool life when cutting ferrous and hard materials. The 0.75 inch straight cylindrical shank is toleranced to h6 for accurate seating in high-precision toolholders.

The 34377 is suited for milling steel, cast iron, stainless steel, non-ferrous metals, superalloys, and titanium. The corner radius geometry reduces edge chipping and improves surface finish at part corners compared to a sharp-corner end mill. It is a regular-length tool appropriate for general-purpose profiling, slotting, and contouring where a blend radius is required. Machinists and CNC programmers in job shops, aerospace, and general manufacturing applications select this tool when consistent corner geometry and coating durability are priorities.

Key Features

• Solid carbide construction for rigidity and wear resistance in ferrous and hard-material applications
• APLUS PVD coating rated for steel, cast iron, stainless steel, superalloys, and titanium
• Five-flute, variable-pitch design reduces harmonic vibration during cut
• 0.0300 inch corner radius with a tight tolerance of -0.0020 to +0.0020 inch
• Center-cutting capability allows plunge entry without a pre-drilled hole
• Right-hand cut and right-hand flute direction; compatible with high-precision toolholders

Compatibility

Designed for use with high-precision toolholders. Primary workpiece materials are steel and cast iron; secondary workpiece materials include stainless steel, non-ferrous metals, superalloys, and titanium.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. Seat the straight cylindrical shank fully into a high-precision toolholder and verify runout does not exceed the 0.0005 inch TIR maximum before commencing a cut. Confirm spindle speed, feed rate, and depth of cut are programmed to match the workpiece material and coating requirements before engaging the part. Inspect the corner radius for wear or chipping regularly, as coating breakdown in hard-material applications can accelerate edge degradation.