Hertel 750378 Square End Mill 1/4 in 4 Flute Solid Carbide Tin

Product Description

The HERTEL 750378 is a solid carbide square end mill designed for precise milling operations in metalworking and machining applications. With a 0.25-inch cutting diameter and 1.5-inch length of cut, it delivers rigid, accurate material removal in ferrous and non-ferrous metals. The four-flute spiral design with a 30-degree helix angle promotes efficient chip evacuation and smooth cutting action. A titanium nitride (TiN) finish increases surface hardness and extends tool life in moderate- to high-production environments. This end mill is used by CNC machinists and manual mill operators in job shops, toolrooms, and production facilities.

This end mill is suited for slotting, profiling, and peripheral milling in steel, aluminum, cast iron, and similar workpiece materials. The centercutting geometry allows plunge cuts directly into the workpiece without a pre-drilled entry hole. The right-hand cutting direction matches the standard spindle rotation on vertical machining centers and knee mills. With a 0.25-inch shank diameter and 4.0-inch overall length, it fits standard collets and end mill holders commonly found in light to medium-duty machining setups.

Key Features

• Solid carbide construction provides high rigidity and wear resistance compared to HSS tooling
• Four-flute spiral design with 30-degree helix angle for efficient chip evacuation and surface finish
• Centercutting capability allows direct plunge entry into workpiece material
• TiN coating increases tool hardness and reduces friction at the cutting edge
• Right-hand cut, consistent with standard CNC and manual milling machine spindle rotation
• 0.25-inch shank diameter fits industry-standard ER and end mill collet systems

Compatibility

Designed as an OEM-style replacement or direct-fit cutting tool for vertical machining centers, knee mills, and CNC milling machines accepting a 0.25-inch shank end mill holder or collet.

Installation Notes

Installation should be performed by a qualified machinist familiar with tool holding systems and safe machine operation. Ensure the spindle is fully stopped and the machine is powered down before changing tooling. Secure the shank to the specified collet or end mill holder torque per the holder manufacturer's guidelines. Verify runout with a dial indicator before initiating a cutting program to avoid premature tool wear or workpiece damage.