Machine Comparison
Haas ST-30 vs Mazak Quick Turn 350MY
Haas Automation vs Yamazaki Mazak · CNC Lathes / Turning Centers
Summary
The Haas ST-30 and the Mazak Quick Turn 350MY are large turning centers with similar spindle power, 30 hp (22.4 kW) on the Haas and 22 kW continuous on the Mazak, and similar top speeds of 3,400 rpm and 3,300 rpm. They differ in what they do with it: the Haas ST-30 is the longer machine for shaft work, and the Mazak Quick Turn 350MY takes larger diameters and adds off-center milling.
The Haas has 32.5 in (826 mm) of Z travel against 690 mm. The Mazak turns Ø420 mm against 15 in (381 mm), passes Ø80 mm bar against 3 in (76 mm) and carries a 12 in chuck against 10 in (254 mm).
Specifications Comparison
| Specification | Haas ST-30 | Mazak Quick Turn 350MY |
|---|---|---|
| X-Axis Travel | 9.4 in (239 mm) | 270 mm ▲ |
| Z-Axis Travel | 32.5 in (826 mm) ▲ | 690 mm |
| Max Turning Diameter | 15 in (381 mm) | Ø420 mm ▲ |
| Bar Capacity | 3 in (76 mm) | Ø80 mm ▲ |
| Chuck Size | 10 in (254 mm) | 12 in |
| Max Spindle Speed | 3,400 rpm ▲ | 3,300 rpm |
| Spindle Power | 30 hp (22.4 kW) | 22 kW continuous |
| Tool Capacity | 12-Station BOT | 12 tools |
| Machine Weight | 10,900 lb (4,944 kg) | 9000 kg |
Advantages
Haas ST-30
- 32.5 in (826 mm) of Z travel against 690 mm, for shaft work
- 3,400 rpm spindle against 3,300 rpm
Mazak Quick Turn 350MY
- Milling, drilling and tapping in the same setup as the turning, including off-center features
- Ø420 mm maximum turning diameter against 15 in (381 mm)
- 12 in chuck against 10 in (254 mm), and Ø80 mm bar against 3 in (76 mm)
Verdict
For shafts and long chucked parts that are turned only, the Haas ST-30 offers 32.5 in (826 mm) of Z travel against 690 mm with the same class of spindle. For larger-diameter chucked parts, up to Ø420 mm, that also need drilled, tapped or off-center milled features, the Mazak Quick Turn 350MY finishes them in one setup. A shop that would otherwise move parts from the lathe to a mill should choose the Mazak.