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C.M.S. boasts the most extensive and versatile range of expanders on the market. This line represents another milestone in the technological development of machines produced by C.M.S. - to carry out the delicate and very important tube expansion phase into the fin collars, therefore, ensuring an optimal heat transfer. Depending on the size of the heat exchanger and the quantity of the tubes to expand, we offer both vertical and horizontal expansion; for the latter, we are the leading manufacturer worldwide. All our machines can operate with an automatic or semi-automatic cycle, minimizing the presence of an operator. For small coil series and for manufacturing prototypes, we produce a ball expander (water-impulse) that is extremely user-friendly and requires virtually no setup – Model MHO.

Horizontal Expander


Horizontal Expander ideal applications are in the case of tube lengths from 3 to 15 m, even for limited production lots, and are characterized by the speed and ease of programming (for coils already performed it is only necessary to call up the code).

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Vertical expanders


Vertical expanders are more suitable for repetitive production and high-volume manufacturing with heat exchanger’s length of up to 2.7 meters and a maximum number of simultaneously expandable tubes reaching 420.

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Horizontal Expander mocn


This machine is suitable for expand up to 72 tubes simultaniusly using the “pull” expansion technologies.

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Horizontal Expander mho


These ball expansion machines are very flexible machines studied for the expansion of coils of medium/large dimensions.

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To obtain an estimate or consultancy on the various machines for the production of heat exchangers, please contact the company.

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