Quicktech T8-T / T6-T

The Quicktech T8-T / T6-T is the twin-spindle member of the maker's compact 45° slant-bed turret lathes. One column of the maker's table covers two spindle sizes, T8 and T6, and several rows carry two values in that order: bar capacity is 65 mm / 42 mm (2.6 in / 1.7 in), the spindle nose A2-6 / A2-5 and the spindle bore 66 mm / 43 mm (2.6 in / 1.7 in). Everything else, from the 400 mm (15.7 in) swing over the bed to the 3,500 kg (7,716 lb) weight, is common to both.

The letter T marks the sub-spindle. It is a small one: 30 mm (1.2 in) bar, a 26 mm (1.0 in) bore and an A2-4 nose, driven by a 3.7 kW (5.0 hp) servo spindle with 5.5 kW (7.4 hp) as the option. It travels on a Z2 axis of 360 mm to take the part from the main spindle. Quicktech's text for the twin version says the sub-spindle is there for back machining, and with a maximum turning diameter of 150 mm (5.9 in) it can hold chucked parts well beyond its bar size.

A BMT-55 power turret with 12 stations does the cutting. The table lists a C axis with a least command unit of 0.001° and a positioning accuracy of 0.02°, and the maker speaks of available live tooling, so drilled and milled features on either end can be done in the same cycle. There is no Y axis: both Y rows are blank.

Spindle power reads 11 kW (14.8 hp) for the larger size and 7.5 kW (10.1 hp) for the smaller, where 11 kW (14.8 hp) is optional. The speed line of the maker's feature list is 3,000 rpm (4,000 rpm) / 4,000 rpm (6,000 rpm), the bracketed figures being options. X1/Z1 travel is 200 mm / 320 mm (7.9 in / 12.6 in) and the control a Mitsubishi M80.