Machine Comparison
DMG Mori CMX 70 U vs DMG Mori DMC 80 U duoBLOCK
DMG Mori vs DMG Mori · 5-Axis Machining Centers
Summary
The DMG Mori CMX 70 U and DMG Mori DMC 80 U duoBLOCK are both from DMG Mori's 5-axis machining centers lineup, making this a common upgrade or lineup decision for shops already invested in the DMG Mori ecosystem. The DMG Mori DMC 80 U duoBLOCK leads in x travel (800 mm (31.5 in) vs 700 mm (27.6 in)). The DMG Mori DMC 80 U duoBLOCK leads in rapid traverse (60 m/min (2,362 ipm) vs 30 m/min (1,181 ipm)). The DMG Mori DMC 80 U duoBLOCK leads in tool capacity (60 tools standard (up to 453) vs 30 tools standard (60, 120 optional)). The DMG Mori DMC 80 U duoBLOCK shows specification advantages in 10 categories, though the DMG Mori CMX 70 U 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 5-axis machining center.
Specifications Comparison
| Specification | DMG Mori CMX 70 U | DMG Mori DMC 80 U duoBLOCK |
|---|---|---|
| X-Axis Travel | 700 mm (27.6 in) | 800 mm (31.5 in) ▲ |
| Y-Axis Travel | 560 mm (22.0 in) | 1,050 mm (41.3 in) ▲ |
| Z-Axis Travel | 510 mm (20.1 in) | 850 mm (33.5 in) ▲ |
| Max Spindle Speed | 12,000 RPM (15,000 RPM optional) | 12,000 RPM (15,000 / 20,000 RPM optional) |
| Spindle Power | 22 kW (30 hp) | 77 kW / 103 hp (powerMASTER) ▲ |
| Spindle Torque | 86 Nm (63 ft-lb) | 1,000 Nm / 737 ft-lb (powerMASTER) ▲ |
| Tool Capacity | 30 tools standard (60, 120 optional) | 60 tools standard (up to 453) ▲ |
| Rapid Traverse | 30 m/min (1,181 ipm) | 60 m/min (2,362 ipm) ▲ |
| Control | CELOS with Fanuc 31i-B5 or Siemens 840D sl | SIEMENS SINUMERIK ONE / HEIDENHAIN TNC7 |
| C Axis Rotation | 360 deg continuous | 360 degrees continuous |
| Spindle Taper | CAT 40 / BBT 40 | HSK-A100 |
| Tool Change Time | 3.0 sec tool-to-tool | 5.6 seconds chip-to-chip ▲ |
| Max Table Load | 300 kg (661 lb) | 1,400 kg (3,086 lb) ▲ |
| Max Workpiece Diameter | 600 mm (23.6 in) | 900 mm (35.4 in) ▲ |
| Price Range | $225,000 - $325,000 ▲ | $600,000 - $950,000 |
Advantages
DMG Mori CMX 70 U
- More competitive pricing at $225,000 - $325,000 compared to $600,000 - $950,000
- Backed by DMG Mori's dealer and service network for parts and support
- Job shops producing medium-sized 5-axis components in aerospace, medical, and general manufacturing
DMG Mori DMC 80 U duoBLOCK
- Greater x travel of 800 mm (31.5 in) accommodates larger workpieces
- Greater y travel of 1,050 mm (41.3 in) accommodates larger workpieces
- Greater z travel of 850 mm (33.5 in) accommodates larger workpieces
- More spindle power at 77 kW / 103 hp (powerMASTER) for aggressive material removal in harder materials
- Superior spindle torque at 1,000 Nm / 737 ft-lb (powerMASTER) vs 86 Nm (63 ft-lb)
Verdict
The DMG Mori DMC 80 U duoBLOCK edges ahead on specifications in this comparison, particularly in X Travel and Y Travel. However, the DMG Mori CMX 70 U 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.