Iscar 4505252 Shrink-fit Tool Holder Adapter

Product Description

The ISCAR 4505252 is a shrink-fit tool holder adapter designed for precision CNC machining applications. It features a straight shank with a 0.5-inch shank diameter and accepts tooling with a 0.125-inch hole diameter. The adapter delivers a 0.76-inch projection and a 0.394-inch nose diameter, enabling close-clearance cutting in confined workpiece features. Through-coolant capability directs cutting fluid directly to the cutting zone, supporting extended tool life and chip evacuation in demanding operations. This adapter is installed by CNC machinists and toolroom technicians working with shrink-fit toolholding systems on machining centers.

This adapter is suited for use on CNC vertical and horizontal machining centers equipped with shrink-fit toolholding systems. The 0.5-inch straight shank allows direct mounting into compatible shrink-fit chucks. With a clamping depth of 0.39 inches and through-coolant support, it is well-suited for high-speed drilling, reaming, and milling operations where thermal clamping and precise runout control are required. It is appropriate for both production and prototype machining environments where tool rigidity and repeatability are priorities.

Key Features

• Straight shank, 0.5 inches in diameter, for shrink-fit chuck mounting
• 0.125-inch hole diameter accommodates small-diameter cutting tools
• 0.76-inch projection for access to confined or deep features
• 0.394-inch nose diameter supports close-clearance applications
• Through-coolant construction directs fluid to the cutting edge
• 0.39-inch clamping depth provides secure thermal grip on the tool shank

Compatibility

Designed as an OEM-style adapter for use with shrink-fit toolholding systems that accept a 0.5-inch straight shank input.

Installation Notes

Installation is performed by qualified CNC toolroom technicians using a shrink-fit induction heating unit to expand the chuck bore before seating the adapter. Always allow the assembly to return fully to ambient temperature before use. Verify runout and concentricity with a dial test indicator after assembly. Consult the machining center manufacturer and toolholder supplier guidelines for proper shrink-fit heating temperatures and procedures.