Machine Comparison
Haas UMC-750 vs Haas UMC-750SS
Haas Automation vs Haas Automation · 5-Axis Machining Centers
Summary
The Haas UMC-750SS is the Super Speed version of the Haas UMC-750. The two 5-axis machines are the same size: 30 x 20 x 20 in (762 x 508 x 508 mm) of travel, a 30 hp (22.4 kW) spindle with 90 ft-lbf of torque, and a 30+1 tool changer. What the SS adds is speed, and Haas charges for it.
The Haas UMC-750SS spins to 12,000 rpm against 8,100 rpm, changes tools in 1.8 s against 2.8 s (2.4 s chip-to-chip against 3.6 s) and rapids at 1,200 ipm (30.5 m/min) against 900 ipm (22.9 m/min). Haas lists the Haas UMC-750 at US$192,995 and the Haas UMC-750SS at US$239,995.
Specifications Comparison
| Specification | Haas UMC-750 | Haas UMC-750SS |
|---|---|---|
| X-Axis Travel | 30 in (762 mm) | 30 in (762 mm) |
| Y-Axis Travel | 20 in (508 mm) | 20 in (508 mm) |
| Z-Axis Travel | 20 in (508 mm) | 20 in (508 mm) |
| Max Spindle Speed | 8,100 rpm | 12,000 rpm ▲ |
| Spindle Power | 30 hp (22.4 kW) | 30 hp (22.4 kW) |
| Spindle Torque | 90 ft-lbf @ 2,000 rpm (122 N·m @ 2,000 rpm) | 90 ft-lbf @ 2,000 rpm (122 N·m @ 2,000 rpm) |
| Spindle Taper / Nose | CT40 / BT40 / HSK-A63 | CT40 / BT40 / HSK-A63 |
| Tool Capacity | 30+1 | 30+1 |
| Tool Change (tool-to-tool) | 2.8 s | 1.8 s ▲ |
| Chip-to-Chip Time | 3.6 s | 2.4 s ▲ |
| Rapid Traverse | 900 ipm (22.9 m/min) | 1,200 ipm (30.5 m/min) ▲ |
| Machine Weight | 14,250 lb (6,463.8 kg) | 14,250 lb (6,463.8 kg) |
| Published List Price | US$192,995 | US$239,995 |
Advantages
Haas UMC-750
- Lower published list price: US$192,995 against US$239,995
- The same 30 hp (22.4 kW) and 90 ft-lbf spindle for steel and stainless, without paying for speed that 3+2 work may not use
Haas UMC-750SS
- 12,000 rpm spindle against 8,100 rpm for aluminum and small tools
- 1.8 s tool-to-tool and 2.4 s chip-to-chip against 2.8 s and 3.6 s
- 1,200 ipm (30.5 m/min) rapids against 900 ipm (22.9 m/min)
Verdict
Same envelope, same power, so the choice is about cycle time. Buy the Haas UMC-750SS for aluminum structural parts, impellers and other continuous 5-axis work in production, where 12,000 rpm, 2.4 s chip-to-chip and 1,200 ipm rapids are used on every part. Buy the Haas UMC-750 for five-sided machining of steel and stainless housings and manifolds in small lots, where the cut needs torque rather than speed and the lower list price of US$192,995 counts for more.