Helical Solutions 30142 Square End Mill 1/4 in 4 Flute Carbide

Product Description

The HELICAL SOLUTIONS 30142 is a solid carbide square end mill designed for precision milling operations in metal fabrication and machining environments. With a 0.25 inch mill diameter and a 0.5 inch length of cut, this single-end tool delivers accurate, repeatable results on ferrous and non-ferrous materials. The four-flute configuration with variable index geometry reduces harmonic vibration during cutting, improving surface finish and extending tool life. An APLUS coating adds wear resistance and thermal stability at the cutting edge. This tool is used by machinists and CNC operators working in job shops, production facilities, and tool rooms.

This end mill is suited for slotting, profiling, and peripheral milling applications where tight tolerances are required. The 0.25 inch straight cylindrical shank fits standard ER collet chucks and end mill holders commonly found on vertical machining centers and CNC mills. The 2.5 inch overall length provides adequate reach for most standard-depth pockets and contours without excessive overhang. Right-hand cutting and right-hand flute direction make this a direct fit for conventional CNC spindle setups.

Key Features

• Solid carbide construction for rigidity and wear resistance in demanding cuts
• APLUS coating for improved heat resistance and extended tool life
• Variable index flute spacing reduces chatter and improves surface finish
• Center-cutting capable, allowing plunge entry into workpiece
• Right-hand cut, right-hand helix for use with standard CNC spindle rotation
• Straight cylindrical shank for compatibility with common collet and end mill holder systems

Compatibility

Designed as a direct-fit replacement or standard tooling option for CNC vertical machining centers and manual mills equipped with 1/4 inch ER collet chucks or end mill holders accepting a 0.25 inch straight shank.

Installation Notes

Installation should be performed by a qualified machinist or CNC operator. Ensure the spindle is fully stopped and the machine is in an e-stop or powered-down state before changing tooling. Seat the shank fully into the collet or holder and torque the retention nut to the tool holder specification. Verify runout with a dial indicator before initiating the first cut.