Nakamura-Tome SC-300IIL

The Nakamura-Tome SC-300IIL is the long-bed member of the SC-300II family: it turns parts up to 1,135 mm (44.7 in) long and 360 mm (14.2 in) in diameter, with 1,213.5 mm (47.8 in) between centers and 1,310 mm (51.6 in) between spindles.

Length is the reason to buy it over the SC-300II, which turns up to 635 mm (25 in) on the same 360 mm (14.2 in) diameter. The extra bed shows in the floor plan: this machine measures 4,902 × 2,130 × 2,300 mm (W × D × H), against a width of 3,996 mm for the SC-300II. Depth and height are unchanged, so the decision is mostly about the wall space along the spindle line.

The spindle package is the same heavy unit: 22/18.5kW at up to 3,500 rpm, with 10 in or 12 in chucks and bar capacity of 71 mm (2.8 in), or 89 mm (3.5 in) with the Ø89 mm option. Driven tools are rated 7.5/3.7kW at up to 6,000 rpm, and the Y-axis gives +/- 60 mm (+/- 2.36 in), so keyways, flats and cross holes can be put along a long shaft in the same cycle.

Two things deserve a check before ordering. The turret has 12 stations, which is a modest count for long shafts with many features. And long, slender parts within the 1,135 mm length need support against deflection; the table lists no steady rest, so ask how such parts would be held.