Dry, wet, and dry and wet milling
Milling machines divide by the materials they cut and by whether they cut dry, wet, or both. Dry milling suits zirconia and PMMA work where a dry cut keeps the workflow simple, wet milling suits glass ceramic and metal work where coolant protects the bur and the piece, and dry and wet machines cover both routes in one frame. The XT-60 is listed as a dry and wet machine, which places it in the broadest of the three groups, while the RX-8H is listed as a metal milling machine, which places it in the most specialised group.
The milling machine buying guide develops those three groups in more detail, comparing them by the materials each one handles and the case types each one suits. A laboratory should choose a milling group from its case mix first, and then a machine within that group, rather than choosing a machine and discovering later that its case mix needs a different group. That order of decisions saves more time than any single machine feature.
XT-60: the machine with a published table
The XT-60 dry and wet milling machine is the only product on this site whose source page published a full specification table, and its product page reproduces that table in the source page's own terms. The table lists the machine's size, weight, axis ranges, power, positioning accuracy, tool magazine, spindle speed, working pressure, voltage, machinable materials and processing types, including veneers, inlays, high-mounted inlays, full crowns and implant-supported restorations. A buyer can therefore check the XT-60 against a case list directly from its product page.
The XT-60 page carries a specification table, and the other product pages do not. A buyer who needs a comparable figure for the RX-8H should ask for it in an inquiry, naming the figure and the machine, and the answer can then be checked against the actual requirement.
RX-8H: metal milling in descriptive terms
The RX-8H metal milling machine is described on its product page in plain language, without a specification table. Ask for its specification table in an inquiry. The description covers its role as a metal milling machine in the XANGTECH range, its place beside the XT-60, and the questions a buyer should confirm before ordering, such as the metals to be milled and the milling mode required. Those questions are the practical content of the page, and they are written to be answered in an inquiry rather than guessed on a catalogue page.
Metal milling differs from zirconia milling in bur choice, coolant needs and machine rigidity, and a laboratory moving into metal work should discuss those points before ordering. The RX-8H page does not prescribe a bur or a coolant routine, because those depend on the metal and the case, and the inquiry form has room to name both. A short message naming the metal and the case type will get a more useful answer than a general question about the machine alone.
XT-50, mentioned but not given a page
A third milling machine name, XT-50, appears in a home page about column as a 5-axis zirconia dry milling machine. A buyer who needs the XT-50 should ask about it in an inquiry, quoting the mention, so the company can confirm whether it is a current product.
The same caution applies to any machine name a buyer finds on a platform listing but not on this site. Platform listings repeat products under variant titles, and a title alone does not prove a distinct machine. Quoting the title in an inquiry lets the company confirm whether it matches XT-60, RX-8H or a different machine entirely, which is faster than ordering against a title that turns out to be a variant.
Milling burs and extraction, beside the machines
A milling machine is only half a milling setup. The burs that cut the material and the extraction that clears the dust both affect the result, and both have their own pages on this site. Burs are listed by the material they mill, zirconia, ceramic glass, PMMA and metal, with third-party system names appearing only as compatibility references. The vacuum cleaner page describes a dust extraction system listed for zirconia milling equipment, in descriptive terms. Ask for its table in an inquiry.
A laboratory ordering a milling machine should confirm the bur and extraction combination in the same inquiry, naming the materials to be milled and the machine chosen. That combined question lets the company answer the setup rather than the machine alone, and it avoids a second order for burs that do not fit the holder, or an extraction unit that does not match the machine's connection.
Choosing between the two machines
The choice between XT-60 and RX-8H turns on the materials a laboratory mills most. A laboratory milling zirconia, PMMA, PEEK, titanium block and glass ceramic across a mixed case load will look first at the XT-60, whose published table lists exactly those materials. A laboratory milling metal as its main work will look first at the RX-8H, whose description places it in the metal group. A laboratory doing both may need both machines, or may need to discuss the split of work in an inquiry before deciding.
Ask for laboratory outcome, throughput and comparison figures for either machine in an inquiry. The pages give the evidence that was available, name the questions that remain, and point those questions to the inquiry form, where they can be answered for a specific case mix rather than guessed for a general one.