Iscar 4509099 ER11 Collet Chuck Straight Shank Through Coolant

Product Description

The ISCAR 4509099 is an ER11 collet chuck with a straight shank, designed for precision workholding in CNC machining centers, lathes, and milling applications. It accepts ER11-series collets with a clamping range of 0.022 to 0.278 inches, making it suitable for small-diameter tooling. The chuck features through-coolant capability, delivering coolant directly to the cutting zone for improved chip evacuation and tool life. The shank diameter is 0.75 inches, with an overall length of 3.234 inches and a projection of 0.734 inches. Installation requires a wrench-actuated nut. Machinists and CNC tooling technicians are the primary installers of this component.

This collet chuck is suited for precision machining environments where small-diameter end mills, drills, or reamers must be held securely with minimal runout. The ER11 collet system is a widely used standard in high-speed spindle applications, benchtop CNC routers, Swiss-style lathes, and compact machining centers. The through-coolant design is particularly useful in deep-hole drilling and high-speed cutting operations where directed coolant flow reduces heat buildup and extends cutting tool life. The part ships as a single unit and is intended for professional toolroom and production machining use.

Key Features

• ER11 collet system with a clamping capacity of 0.022 to 0.278 inches
• Straight shank with a 0.75-inch shank diameter for standard spindle compatibility
• Through-coolant design with through-spindle coolant delivery
• Projection of 0.734 inches for compact tool reach
• Overall length of 3.234 inches for low-profile setups
• Wrench-actuated nut for secure, repeatable collet engagement

Compatibility

Designed as an OEM-style replacement or direct-fit collet chuck for spindles and toolholding systems that accept ER11-series collets with a 0.75-inch straight shank interface.

Installation Notes

Installation should be performed by a qualified CNC machinist or toolroom technician. Power down and lock out the machine spindle before mounting or removing the collet chuck. Use the appropriate ER11 collet wrench and spanner to achieve proper clamping torque - avoid over-tightening the collet nut, which can damage the collet taper. Verify through-coolant port alignment with the spindle coolant delivery system before operation.