Danobat Mikroturn Baseline

The Danobat Mikroturn Baseline is the only machine in the Mikroturn hard turning range that Danobat's table lists with a Fanuc 0i control; every other column shows Siemens Sinumerik One. In capacity it is level with the Mikroturn 100: 380 mm (15 in) of turning diameter without a tailstock, Ø200 x 350 mm (Ø7.8 x 13.7 in) between centers and a 4,000 rpm spindle.

Mikroturn machines are fully hydrostatic horizontal lathes for finishing hardened workpieces, up to 70 HRC according to Danobat, to tolerances that would otherwise call for grinding. The main spindle is hydrostatic with a guaranteed runout error of ≤ 0.1 µm. The guideways are hydrostatic too, with 1 µm positioning and 0.2 µm repeatability under linear scale control. Because nothing in spindle or slides touches metal to metal, there is nothing there to wear.

Both the base and the main spindle housing are natural granite, and vibration absorbing mounts isolate the granite from the machine's metal frame. Heat sources and vibrating elements are placed outside the machining area. All of that is common to the range, so the Baseline shares the precision platform of its siblings and differs in control and layout.

Two points need checking before an order. First, the control: the specification table says Fanuc 0i for this model, while the series text speaks of Siemens Sinumerik One or Fanuc 32i with 0.01 µm resolution. Second, floor space. The Baseline is listed at 8.6 m² (93 sqft), more than the 6.5 m² (70 sqft) of the Mikroturn 100, so it is the entry model by control rather than by size.