Helical Solutions 46101 Corner Radius End Mill 0.25in 3 Flute

Product Description

The HELICAL SOLUTIONS 46101 is a solid carbide corner radius end mill designed for high-performance material removal in both roughing and finishing operations. It features a 0.25-inch mill diameter, a 0.015-inch corner radius, and three flutes with a variable pitch, right-hand helical flute geometry. The Zplus PVD coating is applied to extend tool life and improve performance in aluminum and non-ferrous metals. With a 0.375-inch length of cut and 3.0-inch overall length, this end mill is suited for tight-tolerance machining in professional CNC environments. It is intended for use in high-precision toolholders and is a center-cutting, single-end design in the H40ALV-RN-3 series.

This end mill is configured for primary use in aluminum and non-ferrous metals, with secondary capability across steel, stainless steel, cast iron, high-temperature alloys, and hard materials. The extended reach design, with a 1.125-inch reach length and 0.237-inch neck diameter, supports deeper pocket and slot work where clearance is a concern. It is suitable for high-speed CNC milling in aerospace, automotive, and general precision machining applications. A straight-cylindrical shank provides secure clamping in collet chucks and shrink-fit toolholders. This tool is sold as a single unit and is best installed in a high-precision toolholder to achieve rated runout performance.

Key Features

• Solid carbide construction with Zplus PVD coating optimized for aluminum and non-ferrous metals
• Variable pitch flutes reduce chatter and improve surface finish at higher feed rates
• 0.015-inch corner radius with a tolerance of -0.002 to 0.002 inches for controlled edge geometry
• Center-cutting, single-end design supports plunge entry and full-slot milling
• Extended reach with 1.125-inch reach length and reduced 0.237-inch neck diameter for deep-feature access
• Maximum TIR of 0.0003 inches supports tight-tolerance finish work when used with precision toolholders

Compatibility

Designed for use with high-precision toolholders. Primary workpiece material is aluminum and non-ferrous metals; secondary workpiece materials include steel, stainless steel, cast iron, high-temperature alloys, and hard materials. Part of the H40ALV-RN-3 series.

Installation Notes

Installation should be performed by a qualified CNC machinist or tooling technician. Before mounting, ensure the spindle and toolholder are clean and free of chips or debris that could affect runout. Seat the shank fully in a high-precision collet or shrink-fit holder and torque to the toolholder manufacturer specification. Verify runout with a dial indicator before beginning a cut, as this tool carries a maximum TIR rating of 0.0003 inches.