Shrink Fitting – Meant to deliver great benefiting to manufacturing industry

Have you come across a situation where you wish to join two components together? There are different methods and techniques available in the industry but the success depends on the longevity of that joint. Recently I come to know about a highly effective technique known as Shrink Fitting. This technique is highly effective in conditions where an interference fit is required. This innovative method has replaced the conventional method of fitting a component into another by force lift method or to expand the outer component with heat. All of us know that there were several issues with conventional methods. For example, Force lift method can lead to mechanical damage between the two faces whereas the latter one can cause local damage or stress due to improper or poor heating procedures.

Shrink fitting is supposed to be a feasible alternative to applications where fitting is done by heating the outer components or force fitting. With Liquid Nitrogen shrink fitting the required clearance is obtained by shrinking the inner component (instead of expanding the outer one). This is done by immersing the inner component in a bath of Liquid Nitrogen at a temperature of -196C. After assembly the inner component warms up, expanding to form a tight distortion free interference fit.