Robbjack T6-400-04 Square End Mill 1/8 in 4 Flute Carbide

Product Description

The ROBBJACK T6-400-04 is a solid carbide square end mill designed for precision milling operations in a wide range of metalworking and machining applications. Measuring 0.125 inches in diameter with a 0.1875-inch length of cut and a 2.5-inch overall length, this stub-length tool is built for rigidity and accuracy in tight setups. The double-end configuration provides two usable cutting ends, extending tool life between changes. With a 30-degree helix angle and four spiral flutes, it delivers efficient chip evacuation and a smooth cutting action. The right-hand cut and right-hand flute geometry are standard for conventional CNC and manual milling operations. Material grade is Tuffy solid carbide, uncoated.

This end mill is suited for use in CNC machining centers, knee mills, and manual milling machines across job shops, tool rooms, and production environments. The stub length and 0.1875-inch straight cylindrical shank make it a practical choice for applications requiring reduced overhang and improved deflection control. Centercutting capability allows it to plunge directly into material. It is typically run by machinists and CNC operators working with ferrous and non-ferrous materials where close tolerances and surface finish are priorities.

Key Features

• Solid carbide Tuffy grade construction for hardness and wear resistance
• Double-end design provides two cutting ends per tool
• Four spiral flutes with 30-degree helix angle for efficient chip removal
• Centercutting geometry allows direct plunge entry
• Right-hand cut and right-hand flute for standard mill spindle operation
• Stub length reduces deflection and improves rigidity in close-clearance setups

Compatibility

Designed as an OEM-style replacement or direct application fit for milling operations requiring a 0.1875-inch straight cylindrical shank and a 0.125-inch cutting diameter, consistent with Series T6-400 tooling specifications.

Installation Notes

Installation is performed by machinists or CNC operators using a compatible collet or end mill holder sized for a 0.1875-inch shank. Ensure the spindle is fully stopped and the machine is powered down or in an e-stop state before tool changes. Verify runout at the collet before operation. Consult the machine tool manufacturer guidelines for recommended feed rates and speeds appropriate to the workpiece material.