Point legend according to drawing image:

1) Chamber system: When the chamber system is filled with hydraulic fluid, it has a damping effect on the clamped tool.

2) Expansion sleeve: The expansion sleeve evenly expands against the tool shank. This clamping process first centers the tool shank before fully clamping it over the whole surface.

3) Base body: The machine-side interface is located on the base body.

4) Length-setting screw: For fast and easy tool presetting.

5) Dirt groove: The enormous clamping pressure of the TENDO Slim 4ax hydraulic expansion toolholder creates a displacement of oil, grease, or grease residues into the groove and therefore the clamping surfaces remain dry.

The SCHUNK TENDO Slim 4ax hydraulic expansion toolholder sets the benchmark for both axial machining and fine radial operations, being the only toolholder in its class capable of meeting every requirement. Designed with a geometry in compliance with ISO 69882-8, it combines easy handling, minimal machine setup time, long service life, high flexibility, and Plug & Work compatibility, meaning it can be integrated seamlessly into existing processes without reprogramming, while also supporting minimum quantity lubrication.

A key feature of the TENDO Slim 4ax is its coolant management. In the Cool Flow version, internal channels deliver the coolant directly to the cutting edge, ensuring reliable cooling and effective chip evacuation. This not only enhances machining quality but also extends tool life and improves process reliability. With a standard fine balancing of G2.5 at 25,000 rpm, it is ideally suited for HSC and high-speed machining, guaranteeing stability, precision, and smooth performance even under extreme conditions.

Features:

Outstanding run-out accuracy of less than 0.003 mm ensures consistent concentricity, tight geometric tolerances, and excellent surface finishes, while tool changes can be performed within seconds using just a hex key, eliminating the need for additional devices. This significantly reduces downtime and peripheral costs. The excellent vibration damping minimizes chatter and micro-blowholes, improves surface quality, protects the machine spindle, and further extends tool life, resulting in lower overall production costs.

Structurally, the hydraulic chamber system is filled with fluid, providing a damping effect on the clamped tool shank, while the expansion sleeve expands uniformly to center and clamp the tool shank securely along its full surface. The base body hosts the machine-side interface, while the adjustment screw enables quick and precise presetting of tool length with a tolerance of 0.01 mm and an adjustment range of 10 mm. The integrated dirt groove ensures clean and dry clamping surfaces by pushing away oil or grease residues under high clamping pressure.

With its excellent radial rigidity, the TENDO Slim 4ax prevents lateral deflections during demanding machining operations, ensuring maximum dimensional accuracy. It is perfectly suited for mold making and 5-axis machining centers, where it excels in boring, countersinking, chamfering, and threading applications. Its compatibility with all standard shank types according to ISO 1835 and ISO 6535 (HA, HB, HE) further enhances its versatility, while reduction sleeves with coolant sealing or peripheral cooling expand the range of clamping possibilities for different tool diameters.

The SCHUNK TENDO Slim 4ax hydraulic expansion toolholder is not just a clamping device, but a high-precision system designed to maximize productivity, reduce setup and operating costs, and guarantee flawless machining results even in the most demanding conditions.