The ER16 sealed collets with neoprene inserts according to DIN ISO 15488 (DIN 6499) are designed to provide precise clamping of tools equipped with internal coolant supply while ensuring reliable sealing of the coolant during machining operations.

The neoprene seals integrated into the 30° taper of the collet guarantee an effective coolant seal. The coolant flows through the internal lubrication channels of the cutting tool, enabling direct cooling and lubrication at the cutting zone. This improves chip evacuation, reduces machining temperatures, and increases tool life.

These sealed ER collets feature a four-slot elastic structure, which ensures high clamping rigidity and uniform force distribution around the tool shank. This design allows an average runout accuracy up to 0.008 mm, a critical parameter for high-precision machining and applications requiring tight tolerances.

The system provides stable and repeatable clamping of cylindrical shank tools along the full clamping length, which is essential for maintaining coolant sealing and machining stability.

The collets are compatible with ER16 collet chuck systems and can be used with eccentric extraction clamping nuts, simplifying tool installation and removal.

The maximum permitted coolant pressure is 25 bar, while the clamping collapse range is 0.1 mm, allowing accurate adaptation to the nominal tool diameter.

The ER16RF series covers a clamping range from 3 mm to 10 mm, making these collets highly versatile for many machining applications.

Sealed ER collets are commonly used in CNC machining centers, automatic lathes, milling and drilling operations with internal coolant supply, where precision, rigidity and controlled coolant delivery are essential for process reliability and machining performance.

Thanks to their combination of precision, coolant sealing capability and mechanical reliability, these collets are an ideal solution for industrial production, automotive manufacturing, aerospace machining and precision engineering applications.