Mazak QUICK TURN 450M

The Mazak QUICK TURN 450M is an 18 in chuck turning center with live tools: Ø23 in (584 mm) of maximum turning diameter, a Ø33 in (838 mm) swing, 42 in (1,067 mm) of Z travel and a spindle that stops at 2,000 rpm. Mazak's model list gives it as Milling, VDI, so there is no Y-axis and no second spindle.

Mazak's table for this model is brief, and what it omits matters. There is no maximum turning length row; the bed-length class is 40 in (1,016 mm) against the 42 in (1,067 mm) of Z. There is no spindle power row either. The series page places the 450M in the 18 / 21 inch chuck group and gives that group a 37 kW (50 HP) spindle without stating the rating, together with a Ø50 boring bar shank and a 32 mm turning tool shank. Get the rated power, the torque and the usable length between chuck and tailstock in writing.

What the table does state points to big-bore work. Bar capacity is Ø7 in (178 mm), a large hole for a Ø23 in (584 mm) machine, which suits tube, couplings and thick-walled rings fed or held through the spindle. X travel is 14 in (356 mm). A 2,000 rpm ceiling fits those diameters and rules out efficient work on small ones.

The model to weigh it against is the Quick Turn 450MY, which lists 8 in (203 mm) of Y travel, 80 in (2,032 mm) of turning length and 84 in (2,134 mm) of Z, with Ø24 in (610 mm) of turning diameter and 13 in (330 mm) of X. If the parts are short, large in diameter and milled only on the centreline, the 450M's 12 tools and single spindle cover them with less machine.