Helical Solutions 45242W Corner Radius End Mill 3/8 in 5 Flute

Product Description

The HELICAL SOLUTIONS 45242W is a 5-flute, solid carbide corner radius end mill designed for high-performance metal removal in both roughing and finishing operations. It features a 3/8 inch mill diameter, a 1-1/4 inch length of cut, and a 0.0300 inch corner radius. The APLUS PVD coating extends tool life and supports dry or minimal-coolant cutting. A variable pitch design reduces harmonic chatter, making this end mill well-suited for aggressive cuts in steel, cast iron, stainless steel, non-ferrous metals, superalloys, and titanium. It is a single-end, center-cutting tool from the HEV-5 series with a Weldon flat shank for positive drive in high-precision toolholders.

This end mill is intended for use in CNC machining centers and high-speed milling applications across job shops, production facilities, and tool rooms. Primary workpiece materials include steel and cast iron. Secondary applications cover stainless steel, non-ferrous metals, superalloys, and titanium. The 3/8 inch shank diameter and Weldon flat configuration make it compatible with high-precision collet chucks and end mill holders where runout control is critical. The HEV-5 series is engineered for shops that need a single tool capable of handling both roughing passes and finish contours without a tool change.

Key Features

• 5-flute solid carbide construction for rigidity and extended tool life in ferrous and non-ferrous materials
• APLUS PVD coating reduces heat buildup and improves wear resistance in steel and cast iron
• Variable pitch (variable index) geometry minimizes chatter during aggressive cuts
• 0.0300 inch corner radius protects the cutting edge and reduces stress concentrations in workpiece corners
• Center-cutting design allows plunge entry without a pre-drilled pilot hole
• Weldon flat shank ensures positive seating and prevents pullout in high-torque cuts
• Right-hand cut and right-hand spiral flute direction; compatible with standard CNC spindle rotation

Compatibility

Designed for use with high-precision toolholders. Suitable for CNC milling applications in steel, cast iron, stainless steel, non-ferrous metals, superalloys, and titanium. Verify toolholder bore diameter accepts a 3/8 inch Weldon flat shank before installation.

Installation Notes

Installation should be performed by a qualified machinist or CNC setup technician. Ensure the spindle is fully stopped and locked out before loading or unloading the tool. Seat the Weldon flat fully against the setscrew in the toolholder and torque the setscrew to the toolholder manufacturer specification. Confirm runout does not exceed the 0.0005 inch TIR maximum before beginning a cut.