Customers have long wanted a portal machine based on the proven POSmill E 2050. POS has responded to this request and developed the POSmill H 2200 U on the basis of a portal machine. Here, the head is pivoted by torque drive and the 5. axis in an integrated rotary table. This concept enables unprecedented degrees of freedom. Optionally, tools up to 1,250 mm in length can be used to drill deep holes, for example. An interference circuit of 1,900 mm enables the machining of oversized parts in this class. In this case, cast steel is used as a homogeneous building material in order to ensure uniform thermal behaviour. Today, one often hears of so-called mineral casting. This should be thermally even better than cast steel. But is it really? In this case, however, it is repeatedly “concealed” that you then have to screw linear guides made of steel onto this mineral casting (synthetic resin + concrete). That is to say, two materials with two different coefficients of expansion meet one another. Tensions arise between the two materials. The expansion advantage is thus eliminated. Then why is mineral casting still used? The answer is in the price! The production costs are only ¼ as high as in the case of cast steel. Do you get this price advantage from the machine manufacturers, or does the shareholder get this price advantage? POS relies on cast steel for technical reasons in order to be technically optimally positioned. At 30 tons, it is massive like no other. And in this class, despite the higher investment, a pricecracker seeking its equal. Something you must have seen.