Measure	Extension stroke E	Nut
ER11	8mm	Hexagonal
ER16	8mm	Mini
ER20	12mm	Hexagonal
ER25 *	12mm	Standard
ER25	16mm	Standard
ER32	16mm	Standard
ER40	16mm	Standard

 

 

Tapping holders are essential in mechanical processing, primarily used on production machines such as single-spindle and multi-spindle lathes, CNC machining centers, drills, and transfer machines. These tools are indispensable for all threading operations, significantly improving tool life and reducing the risk of breakage during the machining process.

 

One of the main features of tapping holders is their ability to compensate for any misalignment between the machine spindle and the workpiece. This function is ensured by internal springs that allow axial movement of the tool holder section where the tap is mounted. This axial play is particularly important during the phase when the tap’s rotation direction is reversed, as it helps compensate for load variations and minimizes mechanical stress, thereby improving threading precision and reliability.

 

In addition to axial movement, tapping holders are also designed to offer slight radial play. This feature is crucial for correcting minor alignment errors and ensuring uniform and precise machining, contributing to high-quality threads and preventing premature tool wear.

 

To ensure maximum performance and reliability, tapping chucks are made from certified high-alloy steel, subjected to heat treatments for hardening to enhance durability and wear resistance. Each component is then fully ground to ensure precise and consistent dimensional tolerances.

 

The entire production cycle of the tapping holders is carried out entirely in Italy, using high-precision machine tools and subjecting each phase of the process to rigorous quality controls. This meticulous attention to detail and production quality ensures reliable and long-lasting tools, ideal for the most complex and demanding threading applications.