Machine Comparison
Haas SB-35 vs Haas ST-10
Haas Automation vs Haas Automation · CNC Lathes
Summary
The Haas SB-35 and Haas ST-10 sit at opposite ends of the Haas lathe range and serve different jobs. The SB-35 is a heavy box-way lathe with a 40 hp (29.8 kW) A2-8 spindle, 425 ft-lbf @ 325 rpm of torque and a 12 in (305 mm) chuck. The ST-10 is a compact production lathe with a 15 hp (11.2 kW) A2-5 spindle and a 6.5 in (165 mm) chuck.
The SB-35 turns 30 in (760 mm) long against 16 in (406 mm), swings 13.5 in (345 mm) against 12 in (305 mm) and takes 3.5 in (90 mm) bar against 1.75 in (44 mm). The ST-10 is the faster machine, spinning to 6,000 rpm against 2,500 rpm with 1,200 ipm (30.5 m/min) rapids against 630 ipm (16 m/min). Haas lists the SB-35 at US$112,995 and the ST-10 at US$64,995.
Specifications Comparison
| Specification | Haas SB-35 | Haas ST-10 |
|---|---|---|
| X-Axis Travel | 9 in (230 mm) ▲ | 7.88 in (200 mm) |
| Z-Axis Travel | 32.3 in (820 mm) ▲ | 16 in (406 mm) |
| Max Turning Diameter | 13.5 in (345 mm) ▲ | 12 in (305 mm) |
| Max Turning Length | 30 in (760 mm) ▲ | 16 in (406 mm) |
| Bar Capacity | 3.5 in (90 mm) ▲ | 1.75 in (44 mm) |
| Chuck Size | 12 in (305 mm) | 6.5 in (165 mm) |
| Max Spindle Speed | 2,500 rpm | 6,000 rpm ▲ |
| Spindle Power | 40 hp (29.8 kW) ▲ | 15 hp (11.2 kW) |
| Spindle Torque | 425 ft-lbf @ 325 rpm (576 N·m @ 325 rpm) ▲ | 75 ft-lbf @ 1,300 rpm (102 N·m @ 1,300 rpm) |
| Spindle Taper / Nose | A2-8 | A2-5 |
| Tool Capacity | 12 | 12-Station BOT |
| Rapid Traverse | 630 ipm (16 m/min) | 1,200 ipm (30.5 m/min) ▲ |
| Machine Weight | 14,920 lb (6,767.7 kg) | 7,900 lb (3,585 kg) |
| Published List Price | US$112,995 | US$64,995 |
Advantages
Haas SB-35
- 425 ft-lbf (576 N·m) of torque against 75 ft-lbf (102 N·m)
- 40 hp (29.8 kW) spindle against 15 hp (11.2 kW)
- 30 in (760 mm) turning length against 16 in (406 mm)
- 3.5 in (90 mm) bar capacity against 1.75 in (44 mm)
Haas ST-10
- 6,000 rpm spindle against 2,500 rpm
- 1,200 ipm (30.5 m/min) rapids against 630 ipm (16 m/min)
- Lower published list price, US$64,995 against US$112,995
- Lighter at 7,900 lb (3,585 kg) against 14,920 lb (6,767.7 kg)
Verdict
These lathes do not compete. The SB-35 is for long shafts, flanges and forgings in stainless, Inconel and alloy steel, where 425 ft-lbf of torque, 30 in (760 mm) of turning length and 3.5 in (90 mm) bar are needed. The ST-10 is for small-diameter bar work and second-op turning in aluminum, brass and mild steel under 1.75 in (44 mm), where 6,000 rpm and a US$64,995 list price fit the job.