Niigata HN130D-FC

The Niigata HN130D-FC is the largest facing center in the maker's range, taking parts up to φ3,200 mm × 3,000 mm and 8,000 kg (17,637 lb) on a 1,320 mm × 1,320 mm pallet. Work of that size with turned features usually goes to a large vertical lathe and then to a boring mill. This machine is Niigata's proposal for doing both in one clamping.

Its spindle head has two working elements. The faceplate slide, the U axis, has 130 mm (5.1 in) of travel, or 230 mm (9.1 in) in the optional twin U spindle version, and carries an NT50 short-taper tool for facing, grooving and taper cuts. The W axis is a φ130 spindle with a BT50 shank that feeds out 300 mm for boring, milling and drilling at up to 2,500 min-1. Torque is 659.5 N·m (486 lb-ft) from an AC 26/22 kW motor.

X travel is 3,050 mm (120.1 in), Y is 1,850 mm (72.8 in) and Z is 1,420 mm (55.9 in). Rapid traverse is 18 m/min in X and 12 m/min in Y and Z, the same rates as the plain HN130D, with 5 m/min on W and U.

One detail separates it from the two smaller FC models. The pallet's minimum indexing angle is 0.001° in the standard specification, with no coarser table listed, so every HN130D-FC has a continuously positioning B axis. Niigata lists no heavier pallet option for this model. The magazine holds 62 tools and can be supplied with 88, 128, 175 or 255.