Cold shrinking

Cryogenic Shrinking – What Happens in This Physical Process?

Cryogenic shrinking, now widely used in industry, is a physical process that has made a name for itself especially in metalworking and electrical engineering. By exposing the component to extremely low temperatures, it contracts so that precision assembly can take place.

Cryogenic Shrinking in Practice: The Individual Steps

1. Cooling: Liquid nitrogen at −196 °C cools the component rapidly.


2. Contraction: Because of the low temperature, the workpiece contracts and becomes significantly smaller.


3. Assembly: Thanks to its much smaller size, the component can now be fitted almost effortlessly.


4. Warming and Fixing: As it returns to room temperature, the component expands and sits permanently in a form‑fit connection.

Advantages of Cryogenic Shrinking

• Precise fit: no additional fastening elements required


• Gentle installation: assembly without mechanical load


• High strength: dimensional change creates a form‑fit bond


• No gluing or welding necessary: substantial reduction in assembly costs possible

Cryogenic shrinking is used today, for example, for shaft‑hub connections and bearing assemblies. It offers industry a proven technique for precise, durable, and highly load‑bearing joints.

HeMaTech – Your Expert for Cryogenic Shrinking and Joining Machines

Rely on our team’s high quality standards and expertise for cryogenic shrinking. We support you with state‑of‑the‑art technology and help you achieve optimal results. Any questions? Write to us or arrange a consultation appointment by phone.