YCM TC-46/3200

Longest two-axis lathe YCM lists, the TC-46/3200 has a maximum turning length of 3,200 mm (125.98 in) with a ø750 mm (ø29.53 in) turning diameter. Chuck, spindle nose and motor follow the family: 15", A2-11 and 30/37 kW (40/50 HP).

Three metres between centres is specialist territory. Propeller and drive shafts, long rolls for paper and steel plants, hydraulic cylinder barrels and oil-field tubulars are what fill a bed of this length. For the tubular work, the standard ø130 mm (ø5.12 in) spindle bore can be replaced by the optional big-bore A2-15 spindle with a ø182 mm through hole, so that pipe passes through the headstock and only the end being threaded sits in the work zone.

The tailstock quill row gives 3,025 mm (119.09 in) of stroke, which is nearly the whole bed. Z rapid is 12 m/min (472.44 ipm), the lowest of the four bed lengths. End to end the carriage therefore needs about a quarter of a minute, which matters little against cutting passes that take many minutes each.

The servo turret has 10 stations, 12 optional, and clamps through a 3-piece curvic coupling for which YCM quotes a clamping force of 9,050kgf-m. Spindle speeds are 1,800, 1,600 or 1,200 rpm according to chuck size. Machine weight is 15,500 kg (34,171 lb), and its length makes the foundation and the crane coverage along the bed part of the purchase.