Floating tap holders with extension and ERC collet, featuring a Morse taper shank, are an advanced technical solution for threading operations on machine tools. They are designed to ensure high thread quality, extended tool life, and effective compensation of alignment errors during machining. This system is particularly suitable for use on single-spindle and multi-spindle lathes, CNC machining centers, drilling machines, and transfer lines.

The operating principle is based on a floating system with controlled extension stroke (E = 16 mm), allowing axial movement of the tap through internal springs. This mechanism compensates differences between machine feed and thread pitch, preventing tool overload and significantly reducing the risk of breakage. A slight controlled radial play further absorbs misalignment errors between spindle and workpiece, improving the final thread quality.

During reversal phases, typical in tapping operations, axial compensation is essential to avoid excessive stress on the tool. The combined axial and radial oscillation ensures optimal working conditions even when machine tolerances are not perfectly aligned, maintaining process stability and reducing scrap.

The system is designed for use with ERC collets according to DIN 6499/B (ERC25, ERC32, ERC40), providing wide application flexibility depending on tap diameter. The different dimensional configurations allow adaptation to specific machining requirements while maintaining the right balance between rigidity and compensation capability.

From a construction standpoint, the tap holders are manufactured from certified high-alloy steel, heat-treated and fully ground to ensure wear resistance, geometric precision, and long-term stability. The entire production process is carried out in Italy using high-precision machine tools and is strictly quality controlled.

These tap holders are widely used in automotive, industrial production, subcontract machining, and machine tool manufacturing. They are ideal for intensive production cycles where thread quality, reduced tool breakage, and process reliability are critical.

Selection should consider the taper type (Morse taper), ERC collet size, and operating conditions, especially in threading processes where synchronization compensation is required. This is a reliable and versatile solution for technicians, CNC operators, and process engineers.