Machine Comparison
Haas SB-28 vs Haas SB-35
Haas Automation vs Haas Automation · CNC Lathes
Summary
The Haas SB-28 and Haas SB-35 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 SB-28 leads in max spindle speed (3,200 RPM vs 2,500 RPM). The Haas SB-35 leads in chuck size (305 mm (12 in) vs 254 mm (10 in)). The Haas SB-35 shows specification advantages in 6 categories, though the Haas SB-28 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 SB-28 | Haas SB-35 |
|---|---|---|
| Max Spindle Speed | 3,200 RPM ▲ | 2,500 RPM |
| Spindle Power | 29.8 kW (40 hp) | 29.8 kW (40 hp) |
| Spindle Torque | 542 Nm (400 ft-lb) @ 500 RPM | 542 Nm (400 ft-lb) @ 500 RPM |
| Tool Capacity | 12-station bolt-on turret | 12-station bolt-on turret |
| Chuck Size | 254 mm (10 in) | 305 mm (12 in) ▲ |
| Bar Capacity | 74 mm (2.9 in) | 89 mm (3.5 in) ▲ |
| Machine Weight | 7,711 kg (17,000 lb) ▲ | 8,618 kg (19,000 lb) |
| Control | Haas Next Generation Control (NGC) | Haas Next Generation Control (NGC) |
| Max Cutting Diameter | 349 mm (13.75 in) | 406 mm (16 in) ▲ |
| Max Cutting Length | 711 mm (28 in) | 1,016 mm (40 in) ▲ |
| Max Swing Over Front Apron | 806 mm (31.75 in) | 838 mm (33 in) ▲ |
| Max Swing Over Cross Slide | 527 mm (20.75 in) | 559 mm (22 in) ▲ |
| Spindle Torque Optional Gearbox | 1,898 Nm (1,400 ft-lb) @ 150 RPM | 1,898 Nm (1,400 ft-lb) @ 150 RPM |
| Spindle Nose | A2-6 | A2-8 |
| Price Range | $75,000 - $100,000 ▲ | $90,000 - $115,000 |
Advantages
Haas SB-28
- Higher maximum spindle speed of 3,200 RPM enables faster cutting on aluminum and non-ferrous materials
- Lighter at 7,711 kg (17,000 lb), potentially easier installation and lower foundation requirements
- More competitive pricing at $75,000 - $100,000 compared to $90,000 - $115,000
Haas SB-35
- Superior chuck size at 305 mm (12 in) vs 254 mm (10 in)
- Superior bar capacity at 89 mm (3.5 in) vs 74 mm (2.9 in)
- Superior max cutting diameter at 406 mm (16 in) vs 349 mm (13.75 in)
- Superior max cutting length at 1,016 mm (40 in) vs 711 mm (28 in)
- Superior max swing over front apron at 838 mm (33 in) vs 806 mm (31.75 in)
Verdict
The Haas SB-35 edges ahead on specifications in this comparison, particularly in Chuck Size and Bar Capacity. However, the Haas SB-28 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.