Hydraulic and pneumatic systems are among the most important drive technologies in mechanical engineering. They are used wherever high forces, rapid movements, or precise positioning are required. Whenever machine components rotate continuously and must be supplied with hydraulic oil or compressed air at the same time, rotary unions provide the technical solution for safe and permanently leak-tight fluid transfer.

They connect stationary lines to rotating assemblies and ensure reliable operation even under high pressures, varying loads, and during continuous operation.

Hydraulic and pneumatic systems are used in clamping devices, machine tools, robots, packaging systems, rotary indexing tables, and many other types of machinery. Without rotary unions, hoses would twist with every rotation and become damaged within a short time. The rotary union prevents this and ensures an uninterrupted supply of media.

Multi-channel rotary unions: Many machines require hydraulic fluid, compressed air, or other media simultaneously. Multi-channel rotary unions enable the separate transmission of multiple media within a single compact assembly and simplify the design of complex machines.

Requirements: high pressure resistance, high leak tightness, low-wear sealing systems, long service life, low-maintenance design, and compact construction.

Selection criteria: Medium, operating pressure, speed, temperature, number of channels, material, seal material, connection type, and installation space.

Maintenance and Service Life: Regular inspections, clean media, and adherence to the permissible operating parameters significantly extend service life. High-quality materials and precision-engineered sealing systems minimize wear and reduce unplanned plant downtime.