Robbjack C1-301-24 Square End Mill 3/4 in 3 Flute Carbide

Product Description

The ROBBJACK C1-301-24 is a solid carbide square end mill designed for precision milling operations in metalworking and machining applications. It features a 3/4 inch cutting diameter with a 1-1/2 inch length of cut, a 3/4 inch shank diameter, and a 4 inch overall length. The three-flute, right-hand spiral configuration with a 30-degree helix angle promotes efficient chip evacuation and stable cutting performance. This is an uncoated, centercutting end mill, meaning it can be used for plunge cutting as well as peripheral and slot milling. It is installed and applied by machinists and CNC operators in job shop and production environments.

This end mill is suited for slotting, profiling, and contouring operations on ferrous and non-ferrous materials in both manual and CNC milling setups. The C1-301 series regular-length geometry makes it a practical choice for general-purpose work where rigidity and tool reach are balanced. The solid carbide construction at material grade C2 provides hardness and wear resistance appropriate for demanding cutting conditions. Typical applications include milling steel, aluminum, and similar machinable alloys in light to medium-duty production runs.

Key Features

• Solid carbide construction at material grade C2 for hardness and wear resistance
• Three-flute spiral design with 30-degree helix angle for efficient chip evacuation
• Centercutting geometry allows direct plunge entry into workpiece material
• Right-hand cut and right-hand flute orientation for standard CNC and manual mill spindles
• Uncoated finish suitable for a broad range of general-purpose milling applications
• Regular-length series provides a balance of reach and rigidity

Compatibility

Designed as an OEM-style solid carbide square end mill for use in standard 3/4 inch collet or end mill holders on CNC machining centers and manual milling machines.

Installation Notes

Installation should be performed by a qualified machinist following the machine tool manufacturer's toolholding specifications. Ensure the machine spindle is fully stopped and the machine is powered down or in a safe-stop state before changing tooling. Seat the shank fully and securely in the collet or end mill holder to the recommended engagement depth to prevent tool pullout during cutting. Verify runout with a dial indicator before commencing cuts, as excessive runout accelerates wear and reduces surface finish quality.