Sharp 3080TC-F

Sharp's 3080TC-F stretches the 30 in flat bed CNC lathe to 78.75 in (2,000 mm) between centers. The headstock is the one used across the 3000 series, with a 6.7 in (170 mm) bore, an A2-11 nose and a 20 hp (14.91 kW) motor, so the choice between this model and its siblings comes down to how long the work is and how much floor can be given up.

In numbers: the bed is 137.75 in (3,500 mm) long, Z travel equals the center distance, and the machine occupies 15.41 x 6.56 x 5.91 ft (4.69 x 1.99 x 1.80 m). It weighs 10,120 lb (4,590 kg). Compared with the 3060TC-F that is a modest gain in weight, 10,120 lb against 9,240 lb (4,191 kg), for the added center distance, which makes the 3080TC-F the economical length for a shop that sees a longer shaft only now and then.

Longer work brings deflection. A steady rest (3"- 8") is on the standard list and Sharp offers a steady rest with bearing and two follow up rests, (0.4" - 5.5") and (10"- 18"), as options. The tailstock is manual with air assist, a 5 in (125 mm) quill and 7.87 in (200 mm) of quill travel; a hydraulic tailstock worked by foot pedal can replace it.

Cutting data are the series values: 10-1,000 rpm in 2 automatically selected ranges, 118.11 ipm (3,000 mm/min) of cutting feed, a hydraulic 8 position turret. The Z-axis ball screw is 1.96 in (50 mm) in diameter.