Quicktech MiniMax 25i Twin

The Quicktech MiniMax 25i Twin is a sliding-headstock lathe for 25 mm (1.0 in) bar with a sub-spindle and live tools on both sides. It is the fully equipped column of the four in the maker's MiniMax 25i table, and the only one in which the sub-spindle, X2 and Z2 rows are filled in. Main and sub-spindle both run to 8,000 rpm.

A sliding-headstock machine exists to cut long, thin parts close to their support, and to drop them off complete. The Twin covers the second half of that. Its sub-spindle takes the same 25 mm (1.0 in) bar through the same SR-25R chuck and 27 mm (1.1 in) bore as the main spindle, travels 300 mm (11.8 in) in X2 and 230 mm (9.1 in) in Z2, and faces its own tool block: the table lists ID tools for the sub-spindle as 3+4 (Ø20 mm, ER-16M) and 3 motorized tools (ER-11M) (Axial x3). Turning length on the sub-spindle is 30 mm (1.2 in), so the back end is for facing, drilling, tapping and short turned features.

On the main side there are 7 OD tools on □12 mm shanks, 3 ID positions and 6 motorized tools on ER-16M collets, three axial and three radial. Motorized tools run to 4,000 rpm on a 1.0 kW (1.3 hp) motor. Tools stand in a row on the gang slide, and the maker points out that there is very little movement from one tool to the next.

The spindle motor row gives 3.7 kW (5.0 hp) for main and sub-spindle. Quicktech aims the series at mass production of complex 25mm parts and names medical and IT parts. The machine is small, 2,000 kg (4,409 lb), and runs on a Mitsubishi M80.