Machine Comparison
Haas DS-20Y vs Index G220
Haas Automation vs Index-Traub · Mill-Turn Machines
Summary
The Haas DS-20Y and Index G220 are both mill-turn machines for complete machining of turned parts, but they take different approaches. The DS-20Y is a dual-spindle Y-axis turning center with a 12-station turret on the Haas NGC. The Index G220 is a turn-mill center on a Siemens S840D sl control, with 845 mm (33.3 in) of Z travel against 22.5 in (572 mm).
The Index is faster: 6,000 rpm spindle against 4,000 rpm, 7,200 rpm live tools against 4,000 rpm, and 30 m/min rapids against 472 ipm (12 m/min). Its spindle is rated 20 / 24 kW against 20 hp (14.9 kW). The DS-20Y has the larger 11.75 in (298 mm) turning diameter against 220 mm, and 150 ft-lbf (203 N·m) of torque against 125 / 170 Nm. Bar capacity is 2.5 in (64 mm) against 65 mm.
Specifications Comparison
| Specification | Haas DS-20Y | Index G220 |
|---|---|---|
| X-Axis Travel | 8.4 in (213 mm) | 230 mm (9.1 in) ▲ |
| Z-Axis Travel | 22.5 in (572 mm) | 845 mm (33.3 in) ▲ |
| Max Turning Diameter | 11.75 in (298 mm) ▲ | 220 mm (8.66 in) |
| Max Turning Length | 22.5 in (572 mm) | 660 mm (26 in) ▲ |
| Bar Capacity | 2.5 in (64 mm) | 65 mm (2.6 in) ▲ |
| Chuck Size | 8.3 in (210 mm) | 165 mm (6.5 in) |
| Max Spindle Speed | 4,000 rpm | 6,000 rpm ▲ |
| Spindle Power | 20 hp (14.9 kW) | 20 / 24 kW (100%/40% duty) ▲ |
| Spindle Torque | 150 ft-lbf @ 500 rpm (203 N·m @ 500 rpm) ▲ | 125 / 170 Nm (100%/40% duty) |
| Sub-Spindle Speed | 5,000 rpm | 6,000 RPM ▲ |
| Live Tool Speed | 4,000 rpm | 7,200 rpm ▲ |
| Rapid Traverse | 472 ipm (12 m/min) | 30 m/min ▲ |
| Machine Weight | 11,240 lb (5,098 kg) | approx. 8,500 kg (18,739 lb) |
Advantages
Haas DS-20Y
- 11.75 in (298 mm) turning diameter against 220 mm (8.66 in)
- 150 ft-lbf @ 500 rpm (203 N·m) torque against 125 / 170 Nm
- 8.3 in (210 mm) chuck against 165 mm (6.5 in)
Index G220
- 6,000 rpm spindle against 4,000 rpm
- 7,200 rpm live tools against 4,000 rpm
- 30 m/min rapids against 472 ipm (12 m/min)
- 845 mm (33.3 in) Z travel and 660 mm turning length against 22.5 in (572 mm)
Verdict
Choose the Haas DS-20Y for production fittings, connectors and valve bodies up to 11.75 in in diameter, where a second spindle finishes both ends and higher torque suits larger chucked work. Choose the Index G220 for complex aerospace and medical parts in titanium, Inconel and hardened steel, where 7,200 rpm live tools, faster rapids and a Siemens control support multi-feature machining.