Machine Comparison
DMG Mori CMX 50 U vs DMG Mori CMX 70 U
DMG Mori vs DMG Mori · 5-Axis Machining Centers
Summary
The DMG Mori CMX 50 U and CMX 70 U are two sizes of the same 5-axis platform. They share the spindle (12,000 RPM with 15,000 optional, 22 kW (30 hp), 86 Nm (63 ft-lb)), the CAT 40 / BBT 40 taper, a 30-tool standard magazine, 3.0 sec tool-to-tool time, 30 m/min (1,181 ipm) rapids and CELOS with Fanuc 31i-B5 or Siemens 840D sl.
The difference is size. The CMX 70 U travels 750 x 600 x 520 mm against 500 x 450 x 400 mm, carries 350 kg (771.6 lb) on the table against 200 kg (440.9 lb), and its magazine can be extended to 120 tools against a 60-tool maximum on the CMX 50 U. The CMX 50 U is the smaller machine, at 6,600 kg (14,551 lb) against 8,200 kg (18,078 lb).
Specifications Comparison
| Specification | DMG Mori CMX 50 U | DMG Mori CMX 70 U |
|---|---|---|
| X-Axis Travel | 500 mm (19.7 in) | 750 mm (29.5 in) ▲ |
| Y-Axis Travel | 450 mm (17.7 in) | 600 mm (23.6 in) ▲ |
| Z-Axis Travel | 400 mm (15.7 in) | 520 mm (20.5 in) ▲ |
| Max Table / Workpiece Load | 200 kg (440.9 lb) | 350 kg (771.6 lb) ▲ |
| Max Spindle Speed | 12,000 RPM (15,000 RPM optional) | 12,000 RPM (15,000 RPM optional) |
| Spindle Power | 22 kW (30 hp) | 22 kW (30 hp) |
| Spindle Torque | 86 Nm (63 ft-lb) | 86 Nm (63 ft-lb) |
| Spindle Taper / Nose | CAT 40 / BBT 40 | CAT 40 / BBT 40 |
| Tool Capacity | 30 tools standard (60 optional) | 30 tools standard (60, 120 optional) |
| Tool Change (tool-to-tool) | 3.0 sec tool-to-tool | 3.0 sec tool-to-tool |
| Rapid Traverse | 30 m/min (1,181 ipm) | 30 m/min (1,181 ipm) |
| Control | CELOS with Fanuc 31i-B5 or Siemens 840D sl | CELOS with Fanuc 31i-B5 or Siemens 840D sl |
| Machine Weight | 6,600 kg (14,551 lb) | 8,200 kg (18,078 lb) |
Advantages
DMG Mori CMX 50 U
- Lighter machine at 6,600 kg (14,551 lb) against 8,200 kg (18,078 lb)
- Same 22 kW (30 hp) spindle and 3.0 sec tool change in a smaller package for small fittings and medical parts
DMG Mori CMX 70 U
- 750 x 600 x 520 mm of travel against 500 x 450 x 400 mm
- 350 kg (771.6 lb) table load against 200 kg (440.9 lb)
- Magazine options up to 120 tools against 60
Verdict
Choose by part size, because cutting performance is the same. The CMX 50 U is enough for small medical, dental and aerospace fittings, prototypes and training work that fit within 500 x 450 x 400 mm and 200 kg. The CMX 70 U is the choice when parts or fixtures need up to 750 mm of X travel, 350 kg on the table or a magazine that can grow to 120 tools.