Low-temperature compatible hexapods

Low-temperature compatible ETR hexapods (-40°C)

Accuracy and stability in thermally extreme environments

Symétrie Extended Temperature Range (ETR) positioning hexapods are designed to operate in low-temperature conditions down to –40°C without compromising accuracy, stability, or mechanical reliability.
These extreme environments, typical of testing, outdoor winter installations, or aerospace test campaigns, place severe constraints on materials, lubricants, and electronic components.

Thanks to a rigid and compact parallel architecture, our hexapods guarantee reproducible, high-resolution positioning, even in the presence of significant temperature variations.

Specific design for low temperatures

Each ETR Symétrie hexapod is developed according to strict specifications to guarantee performance in cold conditions:

• Use of materials with low thermal expansion coefficients, such as INVAR or stabilized stainless steel, limiting dimensional variations during thermal cycles.
• Special low-temperature lubricants, ensuring the mobility of joints and cylinders without gumming or hardening.
• Sensors, cables, and connectors selected for their resistance to thermal shock and signal stability.
• Software management of motor intensity, optimizing drive current to maintain smooth and precise operation in cold conditions.
• Possible integration of heating patches to regulate the internal temperature of the system or stabilize critical areas (sensors, actuators).

These provisions ensure stable and repeatable kinematics during the cooling, holding, and reheating phases.

Some low temperature (-40°C) specific projects