Kennametal 6693875 ER16 Collet Chuck CV40 Taper Shank

Product Description

The KENNAMETAL 6693875 is an ER16 collet chuck designed for precision toolholding in CNC machining centers and milling applications. It features a CV40 taper shank for direct spindle mounting and accepts ER16 collets with a clamping range of 0.5 mm to 10 mm. The chuck is balanced to 20,000 RPM, making it suitable for high-speed cutting operations where runout control and vibration reduction are critical. A through-coolant design channels coolant directly to the cutting zone, extending tool life and improving chip evacuation. With a 4-inch projection and an overall length of 169.85 mm, this chuck positions tooling accurately within the work envelope. Machinists and toolroom technicians install this chuck as a standard toolholding solution on compatible machining centers.

This collet chuck is intended for use on CNC vertical and horizontal machining centers equipped with a CV40 spindle interface. The ER16 collet system accommodates a wide range of end mills, drills, and reamers within the 0.5 mm to 10 mm capacity range. The 4-inch projection suits applications where extended reach is needed to clear fixtures or deep-pocket workpiece geometries. Through-coolant capability makes it well suited for materials and operations that require directed coolant flow at the cutting edge.

Key Features

• ER16 collet system with 0.5 mm to 10 mm clamping capacity
• CV40 taper shank for direct spindle mounting
• Balanced to 20,000 RPM for high-speed machining applications
• Through-coolant design for directed coolant delivery to the cutting zone
• 4-inch projection for extended reach within the work envelope
• Overall length of 169.85 mm for consistent tool length management

Compatibility

Designed for use with CNC machining centers equipped with a CV40 taper spindle interface and ER16 collets within the 0.5 mm to 10 mm capacity range.

Installation Notes

Installation and removal should be performed by a qualified machinist or toolroom technician with the spindle fully powered down and locked. Use a properly rated torque wrench and ER collet nut spanner to seat collets and tighten the retention nut to the machine tool builder's specified torque. Inspect the taper shank and spindle bore for contamination or wear before assembly, as debris on the taper interface directly affects runout. Verify through-coolant port alignment with the machine spindle coolant passage before initiating coolant flow.