Iscar 4500627 Tapping Chuck ER32 Taper Shank

Product Description

The ISCAR 4500627 is a taper shank tapping chuck designed for tension and compression tapping operations on CNC machining centers and manual machine tools. It uses an ER32 collet system to hold taps securely during both the cutting and retraction cycle, allowing the spindle to drive the tap in without rigid coupling stresses. The chuck projects 0.787 inches from the modular connection face and accommodates a collet with a 0.5-inch capacity, making it suited for medium-size tap holders. The nose diameter measures 0.866 inches, and a hole diameter of 0.367 inches runs through the body. Machinists and toolroom technicians install this chuck where floating tap control is required to protect tap life and thread quality.

This tapping chuck is used in production and job-shop environments where tapping is performed on vertical or horizontal machining centers with taper spindle interfaces. The ER32 collet series is a widely adopted standard, and this chuck is appropriate for applications requiring controlled axial float during thread-forming or thread-cutting cycles. It does not include through-coolant capability and is not a quick-change design, positioning it for standard fixed-station tapping setups where cycle time is less critical than dimensional accuracy and tap protection.

Key Features

• Tension and compression tapping style provides axial float to reduce tap breakage
• ER32 collet system with 0.5-inch collet capacity for medium-size taps
• Taper shank modular side connection for secure spindle mounting
• 0.787-inch projection from connection face for clearance in confined setups
• 0.866-inch nose diameter and 0.367-inch through-hole diameter
• No quick-change mechanism — fixed-station design for stable, repeatable tapping

Compatibility

Designed for use with ER32 series tap collets on machine tool spindles equipped with a compatible taper shank interface.

Installation Notes

Installation is performed by qualified machinists or toolroom technicians. Power down and lock out the machine spindle before mounting or removing the chuck. Ensure the taper bore is clean and free of chips or burrs before seating the shank to achieve full contact and runout accuracy. Verify collet seating and tap retention torque per the collet manufacturer's specifications before initiating a tapping cycle.