Sandvik Coromant 5727988 ER16 Collet Chuck C4 Shank

Product Description

The SANDVIK COROMANT 5727988 is an ER16 collet chuck with a modular connection shank designed for precision CNC milling, drilling, and boring applications. The C4 modular connection provides a rigid, repeatable interface for quick tool changes on compatible tooling systems. With a projection of 2.7559 inches (70.00 mm) and an overall length of 3.7008 inches (94.00 mm), this chuck positions the cutting tool accurately relative to the spindle nose. The unit is balanced to 39,000 RPM, making it suitable for high-speed machining centers where vibration control is critical. Through-coolant capability directs fluid directly to the cutting zone, supporting tool life and chip evacuation in demanding operations. Licensed machinists and CNC setup technicians are the primary installers.

This ER16 collet chuck is used in CNC machining centers equipped with a C4 modular connection interface. The ER16 collet series accommodates a range of small-diameter cutting tools, making this chuck appropriate for finish milling, reaming, and light drilling in both production and job-shop environments. The through-coolant feature makes it a practical choice for deep-hole drilling and high-speed finishing passes where heat buildup and chip packing are concerns. It is actuated by wrench for secure collet engagement.

Key Features

• ER16 collet system accepts a range of small-diameter tooling for versatile machining operations
• C4 modular connection shank provides a repeatable, rigid interface for fast tool changes
• Balanced to 39,000 RPM for use on high-speed machining centers
• Through-coolant design directs coolant to the cutting zone for improved tool life and chip evacuation
• Nose diameter of 1.1024 inches (28.00 mm) and projection of 2.7559 inches for precise reach into workpieces
• Wrench-actuated collet engagement for secure clamping

Compatibility

Designed for use with CNC machining centers equipped with a C4 modular connection interface and compatible with the ER16 collet series.

Installation Notes

Installation and tool changes should be performed by a qualified CNC machinist or setup technician with the machine spindle fully stopped and the machine in a safe, locked-out state. Use the appropriate ER16 collet wrench and spanner nut to secure the collet to the manufacturer-specified engagement procedure. Verify the modular connection is clean and free of chips or contamination before seating the chuck. Confirm runout and balance compliance before operating at elevated spindle speeds.