Sandvik Coromant 5728002 ER25 Collet Chuck C4 Modular

Product Description

The SANDVIK COROMANT 5728002 is an ER25 collet chuck with a modular connection shank designed for precision rotating tool applications on CNC machining centers and turning centers equipped with a C4 modular interface. The chuck accepts the full range of ER25 collets and features through-coolant capability for direct coolant delivery to the cutting zone. With a projection of 1.4961 inches and a nose diameter of 1.6535 inches, it is balanced to 39,000 RPM, making it suitable for high-speed machining operations. Installation and removal are performed with a standard ER wrench. This chuck is intended for use by professional machinists and toolroom technicians in production and job-shop environments.

This chuck is suited for high-speed milling, drilling, reaming, and tapping operations where accurate tool runout and coolant delivery are required. The C4 modular connection shank allows quick changeover on machines equipped with a compatible Coromant Capto or equivalent modular tooling system. The 1.4961-inch projection and 2.4409-inch overall length keep gauge-line distances manageable in tight workholding setups. Through-coolant passages support chip evacuation and tool life in deep-hole and high-feed applications on both horizontal and vertical machining centers.

Key Features

• ER25 collet system accepts a wide range of ER25 collet bore sizes for versatile toolholding
• C4 modular connection shank enables fast, repeatable tool changes on compatible machine interfaces
• Balanced to 39,000 RPM for stable performance in high-speed machining applications
• Through-coolant capability delivers coolant directly to the cutting edge
• 1.4961-inch projection and 2.4409-inch overall length suit compact workholding setups
• Actuated by standard ER wrench — no special tooling required for collet changes

Compatibility

Designed for use with ER25 collets on CNC machining centers and turning centers equipped with a C4 modular connection interface. Specific machine model compatibility should be confirmed against the machine tool builder documentation before installation.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician familiar with modular tooling systems. Ensure the machine spindle and all tooling interfaces are clean and free of chips or debris before assembly. Torque the collet nut to the toolholder manufacturer's specification using the correct ER25 spanner wrench — do not use pipe wrenches or improvised tools. Verify runout after assembly and before initiating any cutting cycle.