Mazak SYNCREX

The Mazak SYNCREX series is a line of Swiss-type lathes with a main and a sub spindle, offered in 20 models. A model name pairs a size class with a configuration: 10, 12, 20, 25, 32 or 38, followed by /7, /8, /9 or /9X. The size class follows bar capacity: the SYNCREX 12/8 turns Ø12 mm bar and the SYNCREX 20/7 turns Ø0.75 in (19 mm).

Across the series the main spindle tops out between 8,000 rpm and 15,000 rpm and the sub spindle between 8,000 rpm and 12,000 rpm, with motors from 3.7 kW (5 HP) (40% ED) to 7.5 kW (10 HP) (40% ED) on both. Turning length and spindle speed both move with the size class. Speed falls as size grows. The SYNCREX 12/8 runs its Ø12 mm bar at 15,000 rpm over 135 mm, where the SYNCREX 20/7 takes 8.07 in (205 mm) of length at 10,000 rpm.

Tool capacity runs from 24 tools to 39 tools, and the configuration number is what moves it. In the 20 size, the SYNCREX 20/7 lists 29 tools, the SYNCREX 20/8 lists 33 tools, and the SYNCREX 20/9 and SYNCREX 20/9X list 36 tools each, all with the same bar size, turning length and spindle speed. Over the whole series the table counts 7 to 11 OD tools, 3 to 8 back-working tools and 2 to 5 end-working tools, with 4 cross live tools on every model.

Axis speed holds between the two sizes compared here, and weight does not. The SYNCREX 12/8 lists rapids of 35000 mm/min on X, Y and Z and a weight of 3197 kg. The SYNCREX 20/7 lists 1,378 ipm (35 m/min), the same rate in other units, and weighs 7,850 lb (3,561 kg). Mazak builds the series on what it calls an HDCC base, a solid one-piece casting it describes as 10% more rigid than cast iron. It also lists a removable guide bushing adapter, so the bushing can be preset outside the machine, an Auto Tool Setter inside the machine, and running full bar capacity with no special bar end prep.

To narrow the choice, fix the size class from the bar diameter and the longest turned length. Then count the back-end, end-face and cross operations of the hardest part, because that count decides the configuration.