You too got confused by hearing this term, "Shrink Fitting", didn't you? When this term came in my mind's library I too was in dilemma and found myself in the threshold to find its meaning. As, I love searching new things just thought to share it with you all so that you get well acquainted with it. Its the traditional way of fitting a component into another either by the hit of the force method or by expanding the outer component of the shaft with heat.
First the end of the shaft in Shrink Fitting is immersed in the liquid Nitrogen cooling tank where it is allowed to cool down at a temperature of -196 °C. Then the shaft and inner component warms up expanding to form a tight distortion free interference fit where the sleeve is held in place with a retaining bolt.
Both these methods have disadvantages in that the former can lead to mechanical damage between the two faces and the latter can cause local damage or stress due to uneven or poor heating procedures, as well as the practicalities of heating large frames or housings. As these were traditional methods, there are some disadvantages with them.
First the end of the shaft in Shrink Fitting is immersed in the liquid Nitrogen cooling tank where it is allowed to cool down at a temperature of -196 °C. Then the shaft and inner component warms up expanding to form a tight distortion free interference fit where the sleeve is held in place with a retaining bolt.
Both these methods have disadvantages in that the former can lead to mechanical damage between the two faces and the latter can cause local damage or stress due to uneven or poor heating procedures, as well as the practicalities of heating large frames or housings. As these were traditional methods, there are some disadvantages with them.
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