Hertel 750308 Square End Mill 3/16 Inch 4 Flute Carbide

Product Description

The HERTEL 750308 is a 4-flute solid carbide square end mill designed for precision milling in ferrous and non-ferrous materials. Built from micrograin carbide stock, it carries an AlTiN finish that extends tool life under elevated cutting temperatures. The 30-degree right-hand spiral flute geometry promotes efficient chip evacuation while maintaining a clean, square shoulder cut. At 3 inches OAL with a 1-1/8-inch length of cut, this is an extra-long configuration suited for jobs requiring deeper reach without a separate extended-reach holder. Machinists and tool-and-die professionals handling production milling work are the primary users.

This end mill fits applications where a 3/16-inch diameter tool is needed in steel, stainless, cast iron, aluminum, and similar materials. The centercutting design allows direct plunge entry, making it useful for slot milling, pocketing, and contour work in a single setup. The extra-long length of cut range of 1.0 to 1.25 inches suits deep-slot and step-feature milling where a standard-length tool cannot reach. It is equally at home in manual knee mills and CNC machining centers running appropriate feeds and speeds for 3/16-inch carbide tooling.

Key Features

• Solid micrograin carbide construction for rigidity and wear resistance in demanding cuts
• AlTiN coating provides high heat resistance and extends tool life in dry or semi-dry machining
• 4-flute, 30-degree right-hand spiral design balances chip load and surface finish
• Centercutting geometry enables direct plunge milling without a pre-drilled pilot hole
• Extra-long 1-1/8-inch length of cut reaches deep slots and stepped features
• Right-hand cut and right-hand flute configuration suits standard CNC and manual mill spindles

Compatibility

Designed as a direct-fit replacement or standard tooling selection for any milling machine or machining center equipped with a collet, end mill holder, or shrink-fit chuck accepting a 3/16-inch straight shank.

Installation Notes

Installation should be performed by a qualified machinist following shop safety protocols. Ensure the spindle is fully stopped and the machine is locked out before inserting or removing the tool from its holder. Seat the shank to the minimum recommended insertion depth for the holder type in use to prevent pullout under cutting loads. Verify runout with a dial indicator after seating, as micrograin carbide is brittle and sensitive to uneven clamping forces that can cause premature chipping.