The ER20 sealed tap collets with square drive series ERC MRF, compliant with DIN ISO 15488 (DIN 6499), are designed for high-precision synchronized tapping operations on CNC machining centers, automatic lathes and modern machine tools. The integrated internal square drive ensures direct torque transmission from the spindle to the tap, providing a secure and stable connection during threading operations and preventing tool slippage.

This design clamps the nominal tap shank diameter with h8 tolerance, ensuring accurate and repeatable tool positioning. The collets are specifically designed for standard taps DIN 371, DIN 374 and DIN 376, widely used in industrial metalworking and precision machining applications.

The MRF version incorporates neoprene sealing inserts which provide coolant sealing up to 25 bar, improving lubrication and heat dissipation during tapping operations. This increases tool life, reduces tap wear and ensures higher thread quality even in demanding production environments.

Installation is performed using ER collet nuts with eccentric extraction, enabling fast tool replacement and reliable clamping inside ER toolholders. The optimized collet geometry ensures high rigidity and uniform clamping force distribution, maintaining system concentricity and machining stability.

The ER20 MRF tap collets are widely used in precision engineering, automotive manufacturing, machine tool production and industrial metalworking, where consistent thread quality and reliable tool clamping are essential for efficient and stable machining processes.