21.H6.ACU-11B0

The KEB 21.H6.ACU-11B0 hydraulic actuator from KEB offers a robust and compact solution within the H6 Combivert Multi-Axis Drives series, engineered for precision motion control in industrial automation. This actuator delivers a stroke length of 100 mm and a bore size of 63 mm, providing substantial linear travel and force capacity in a streamlined design. Constructed from aluminum alloy with an anodized surface finish, the 21.H6.ACU-11B0 resists corrosion and wear in demanding operating environments. With a rod diameter of 25 mm and a maximum operating pressure of 210 bar, this actuator ensures reliable force transmission and positional accuracy under high loads. Its modular geometry enables straightforward integration into multi-axis systems, maximizing machine flexibility and performance.

The 21.H6.ACU-11B0 actuator features a flange mount mounting style that simplifies installation and alignment on machine frames and tooling fixtures. Fluid compatibility with mineral hydraulic oil ensures long service life of internal components and stable performance across duty cycles. Sealing is provided by nitrile rubber (NBR) elements optimized for high-pressure applications, preventing leakage and maintaining system integrity. The actuator supports cycle speeds of up to 60 cycles/min, enabling rapid actuation sequences without compromising stability. Designed for continuous operation at temperatures ranging from -20 degrees C to +80 degrees C, this unit maintains sealing performance and material strength under wide thermal conditions.

Operational performance of the 21.H6.ACU-11B0 excels through its balanced combination of speed, force, and durability. At maximum pressure, the actuator achieves consistent actuation speeds while delivering precise positioning over its full 100 mm stroke length. The anodized aluminum construction contributes to a lightweight total mass of 6.5 kg, reducing inertial loads on mechanical linkages and drive components. Maintenance intervals are extended by corrosion-resistant finishes and robust seal formulation, minimizing downtime and lifecycle cost. Furthermore, the flange mounting interface and standardized mounting dimensions support rapid replacement or reconfiguration in modular automation cells.

System integration is streamlined by the actuator’s compatibility with the wider H6 Combivert Multi-Axis Drives environment, allowing centralized control of hydraulic and electric axes. Designers can leverage the compact footprint and standardized mounting footprint to optimize control cabinet and machine layouts. Target applications include industrial automation tasks such as press feeding, robot-assisted assembly, material handling, and packaging operations where high repeatability and force density are essential. The 21.H6.ACU-11B0 delivers a balanced combination of performance, reliability, and ease of integration for advanced manufacturing systems.