Machine Comparison
Haas ST-10Y Turning Center vs Haas ST-15
Haas Automation vs Haas Automation · CNC Lathes
Summary
The Haas ST-10Y and Haas ST-15 share the compact ST frame, with 7.88 in (200 mm) of X and 16 in (406 mm) of Z travel, 16 in (406 mm) of turning length and a 6,000 rpm sub-spindle. They take different routes from there: the ST-10Y adds Y-axis milling, while the ST-15 adds bar capacity and spindle power.
The ST-15 takes 2.5 in (64 mm) bar against 1.75 in (44 mm), carries an 8.3 in (210 mm) chuck against 6.5 in (165 mm), and delivers 20 hp (14.9 kW) and 150 ft-lbf @ 500 rpm against 15 hp (11.2 kW) and 75 ft-lbf @ 1,300 rpm. It also rapids at 1,200 ipm (30.5 m/min) against 472 ipm (12 m/min). The ST-10Y spins faster, 6,000 rpm against 4,000 rpm. Haas lists the ST-10Y at US$102,995 and the ST-15 at US$70,995.
Specifications Comparison
| Specification | Haas ST-10Y Turning Center | Haas ST-15 |
|---|---|---|
| X-Axis Travel | 7.88 in (200 mm) | 7.88 in (200 mm) |
| Z-Axis Travel | 16 in (406 mm) | 16 in (406 mm) |
| Max Turning Diameter | 11 in (279 mm) | 12 in (305 mm) ▲ |
| Max Turning Length | 16 in (406 mm) | 16 in (406 mm) |
| Bar Capacity | 1.75 in (44 mm) | 2.5 in (64 mm) ▲ |
| Chuck Size | 6.5 in (165 mm) | 8.3 in (210 mm) |
| Max Spindle Speed | 6,000 rpm ▲ | 4,000 rpm |
| Spindle Power | 15 hp (11.2 kW) | 20 hp (14.9 kW) ▲ |
| Spindle Torque | 75 ft-lbf @ 1,300 rpm (102 N·m @ 1,300 rpm) | 150 ft-lbf @ 500 rpm (203 N·m @ 500 rpm) ▲ |
| Spindle Taper / Nose | A2-5 | A2-6 |
| Sub-Spindle Speed | 6,000 rpm | 6,000 rpm |
| Tool Capacity | 12 | 12-Station BOT |
| Rapid Traverse | 472 ipm (12 m/min) | 1,200 ipm (30.5 m/min) ▲ |
| Machine Weight | 7,900 lb (3,584 kg) | 7,900 lb (3,584 kg) |
| Published List Price | US$102,995 | US$70,995 |
Advantages
Haas ST-10Y Turning Center
- Y-axis milling for cross-holes, flats and keyways
- 6,000 rpm main spindle against 4,000 rpm
Haas ST-15
- 2.5 in (64 mm) bar capacity against 1.75 in (44 mm)
- 150 ft-lbf (203 N·m) of torque against 75 ft-lbf (102 N·m)
- 20 hp (14.9 kW) spindle against 15 hp (11.2 kW)
- Lower published list price, US$70,995 against US$102,995
Verdict
Choose the ST-10Y for small precision parts under 1.75 in (44 mm) that need off-center milled features, such as medical implants and fluid fittings, where finishing in one setup saves a second operation. Choose the ST-15 for plain turning of mid-size bar up to 2.5 in (64 mm) in steel and stainless, where double the torque, faster rapids and a lower list price count for more than Y-axis milling.