The Hoerbiger ZAED, ZBED, and ZFED servo cylinders product leaflet provides specifications, installation, maintenance and ordering information.
This leaflet describes the three Hoerbiger servo cylinder types – ZAED, ZBED and ZFED – and their application for precise positioning of valves, slides, flappers and other mechanical components. It explains the operating principle, construction details, and the materials used for the housing, piston and diaphragm.
Installation instructions cover fastening methods, recommended inlet orientation, and required signal pressure connections. The document also lists technical data such as nominal diameter, maximum working pressure, stroke lengths, temperature range, and ordering details, and includes safety notes for handling the cylinders.
| Nominal diameter DN (mm) | 23 |
|---|---|
| Maximum working pressure (bar g) | 10 |
| Standard cylinder stroke (mm) | up to 40 |
| Active diaphragm area (mm²) | approx. 1670 |
| Temperature range (°C) | -20 to +90 |
| Materials | Housing, cover, piston aluminium; cylinder rod stainless steel |
| Weight (kg) | 0.95 |
The maximum working pressure is 10 bar (g).
Installation with inlet E facing downwards is recommended, using humid air to drain condensate.
Never attempt to disassemble a cylinder whilst under pressure.