Newsletter 2020/05

Newsletter Bieri micro power unit for heavy load transportation

Bieri micro power unit for heavy load transportation

In cooperation with Hydac AB Süd and HTS - Hydraulische Transportsysteme GmbH we developed a modularly designed micro power unit which enables very compact motor-pump and power unit solutions for confined installation spaces.

Due to the modular design, valves of the type WVH-4B can be flange-mounted as individual valves or in a valve bank, depending on the functional requirements. As an alternative, numerous valves from the HYDAC mini-valve kit are available for combination with the motor-pump assembly.

The micro unit was installed in the HTS ECO-Skate eMotion 40H from HTS.


Technical data

  • Pressure range up to 500 bar
  • extremely low installation height of the hydraulics of < 90 mm
  • Overall system height < 180 mm
  • Transport of loads up to 40'000 kg



Our products and services


You will find powerful Radial Piston Pumps up to 1000 bar as well as space-optimizing Axial Piston Pumps with the smallest flow rates and high pressures.


Our valves in nominal sizes 4 and 6 with pressures up to 1000 bar have been well tested and are reliable. They are available in several switching positions and designs.

Systems and accessories

Modular High-Pressure Power Units, Pressure Switches, Level Switches and various accessories complete our product range.

Bieri Hydraulik AG
Könizstrasse 274
CH-3097 Liebefeld

Tel. +41 31 970 09 09