Machine Comparison
Haas ST-10Y vs Haas ST-15
Haas Automation vs Haas Automation · CNC Lathes
Summary
The Haas ST-10Y and Haas ST-15 are both from Haas Automation's cnc lathes lineup, making this a common upgrade or lineup decision for shops already invested in the Haas Automation ecosystem. The Haas ST-10Y leads in max spindle speed (6,000 RPM vs 4,000 RPM). The Haas ST-15 leads in spindle power (14.9 kW (20 hp) vs 11.2 kW (15 hp)). The Haas ST-15 leads in chuck size (210 mm (8.3 in) vs 165 mm (6.5 in)). The Haas ST-15 shows specification advantages in 6 categories, though the Haas ST-10Y may still be the better choice depending on your shop's specific needs and the type of work you run. Both machines are proven performers in production environments and represent solid investments for shops in the market for a cnc lathe.
Specifications Comparison
| Specification | Haas ST-10Y | Haas ST-15 |
|---|---|---|
| Max Spindle Speed | 6,000 RPM ▲ | 4,000 RPM |
| Spindle Power | 11.2 kW (15 hp) | 14.9 kW (20 hp) ▲ |
| Chuck Size | 165 mm (6.5 in) | 210 mm (8.3 in) ▲ |
| Bar Capacity | 44.5 mm (1.75 in) | 63.5 mm (2.5 in) ▲ |
| Control | Haas Next Generation Control (NGC) | Haas Next Generation Control (NGC) |
| Max Cutting Diameter | 279 mm (11 in) | 305 mm (12 in) ▲ |
| Max Cutting Length | 305 mm (12 in) | 305 mm (12 in) |
| Spindle Nose | A2-5 | A2-6 |
| Max Thrust X | 10,676 N (2,400 lbf) | 14,679 N (3,300 lbf) ▲ |
| Max Thrust Z | 16,458 N (3,700 lbf) ▲ | 14,679 N (3,300 lbf) |
| Rapid Traverse X | 30.5 m/min (1,200 ipm) | 30.5 m/min (1,200 ipm) |
| Rapid Traverse Z | 30.5 m/min (1,200 ipm) | 30.5 m/min (1,200 ipm) |
| Price Range | $70,000 - $95,000 | $50,000 - $80,000 ▲ |
Advantages
Haas ST-10Y
- Higher maximum spindle speed of 6,000 RPM enables faster cutting on aluminum and non-ferrous materials
- Superior max thrust z at 16,458 N (3,700 lbf) vs 14,679 N (3,300 lbf)
- Backed by Haas Automation's dealer and service network for parts and support
- Job shops adding Y-axis turning capability on a budget without committing to a $150K+ machine
Haas ST-15
- More spindle power at 14.9 kW (20 hp) for aggressive material removal in harder materials
- Superior chuck size at 210 mm (8.3 in) vs 165 mm (6.5 in)
- Superior bar capacity at 63.5 mm (2.5 in) vs 44.5 mm (1.75 in)
- Superior max cutting diameter at 305 mm (12 in) vs 279 mm (11 in)
- Superior max thrust x at 14,679 N (3,300 lbf) vs 10,676 N (2,400 lbf)
Verdict
The Haas ST-15 edges ahead on specifications in this comparison, particularly in Spindle Power and Chuck Size. However, the Haas ST-10Y remains competitive and may be the better choice depending on price, dealer support in your area, or specific workholding and tooling considerations. Both are capable machines — the best decision comes from running your actual parts and evaluating total cost of ownership including tooling, training, and service.