Kennametal 2024394 Modular Tool Holding Extension KM80ATC

Product Description

The KENNAMETAL 2024394 is a modular tool holding extension designed for use in CNC machining centers and turning applications that require extended reach from the spindle. Built around the KM80ATC modular connection interface, this extension provides a rigid, repeatable coupling between the machine spindle and the cutting tool assembly. It measures 6.496 inches overall length with an extension length of 4.724 inches and a body diameter of 3.15 inches. Weighing 5.51 pounds, this is a precision-machined component intended for installation by qualified CNC machinists and tooling technicians in production or job-shop environments.

This extension is suited for applications where standard-length tool holders do not provide sufficient clearance or reach, such as deep-cavity milling, workpiece protrusion machining, or fixtures that position the spindle face away from the cut zone. The KM80ATC interface is a quick-change modular system that allows tools to be swapped at the machine without removing the extension from the spindle, reducing changeover time in high-mix production settings. It is appropriate for both horizontal and vertical machining centers equipped with KM80ATC-compatible spindle interfaces.

Key Features

• KM80ATC modular connection provides repeatable, high-rigidity tool coupling
• 6.496 inch overall length with 4.724 inch extension length for deep-reach applications
• 3.15 inch body diameter for robust cross-sectional rigidity under cutting loads
• Precision-machined construction supports consistent tool runout performance
• Compatible with KM80ATC quick-change modular tooling systems

Compatibility

Designed for use with KM80ATC modular tooling interfaces. Consult your machine tool documentation to confirm spindle interface compatibility before ordering.

Installation Notes

Installation should be performed by a qualified CNC machinist or tooling technician. Power down and lock out the machine spindle before mounting or removing the extension. Use the appropriate KM-series clamping tools as specified by the modular system manufacturer to ensure proper seating and clamping force. Do not force-fit or impact the modular interface, as this may damage the precision mating surfaces.