Iscar 4505058 Shrink-fit Tool Holder Adapter 3/4 in

Product Description

The ISCAR 4505058 is a shrink-fit tool holder adapter designed for precision CNC machining applications. It features a straight shank with a 0.75 inch shank diameter and a 0.25 inch hole diameter, making it suitable for securing small-diameter cutting tools in shrink-fit tooling systems. With an overall length of 8 inches and a 2.3 inch projection, this adapter provides extended reach while maintaining rigidity at the spindle interface. Through-coolant capability directs cutting fluid directly to the tool tip, supporting chip evacuation and thermal management during high-speed or deep-cavity operations. Machinists and tooling technicians working in production or job shop environments are the primary installers.

This adapter is used in machining centers and CNC milling setups where shrink-fit tooling systems are employed. It is suited to operations requiring precise tool runout control and consistent clamping depth. The 1.38 inch clamping depth and 0.433 inch nose diameter accommodate standard shrink-fit collet arrangements. Applications include finish milling, drilling, and reaming operations where tool concentricity and vibration damping are critical to part quality.

Key Features

• Straight shank design with 0.75 inch shank diameter for rigid spindle engagement
• 0.25 inch hole diameter sized for small-diameter tool shanks
• 2.3 inch projection for extended reach into deep cavities or pockets
• Through-coolant compatible to direct fluid to the cutting zone
• 1.38 inch clamping depth for secure tool retention
• 0.433 inch nose diameter compatible with standard shrink-fit induction heating equipment

Compatibility

Designed as an OEM-style shrink-fit tool holder adapter for use with standard shrink-fit induction heating systems and CNC machining center spindles accepting a 0.75 inch straight shank interface.

Installation Notes

Installation requires a shrink-fit induction heating unit to expand the bore before inserting or removing the cutting tool - never attempt to press or hammer tools into a shrink-fit bore. Ensure the spindle and tool holder are clean and free of burrs before assembly. Power down the machining center and follow the equipment manufacturer's safe handling procedures when working with heated tooling components. Tooling setup should be performed by qualified machinists or tooling technicians familiar with shrink-fit systems.