Machine Comparison
Mitsui Seiki H6D vs Mitsui Seiki J6CN
Mitsui Seiki vs Mitsui Seiki · CNC Boring Machines
Summary
The Mitsui Seiki H6D and the Mitsui Seiki J6CN are both precision boring machines, built around different priorities. The Mitsui Seiki H6D is the faster machine, with a 6,000 rpm BT50 spindle and 15 m/min (591 ipm) rapids. The Mitsui Seiki J6CN has the larger table and the tighter published accuracy. Both weigh 9,000 kg.
The Mitsui Seiki J6CN travels 1,020 mm (40.15") in X and 760 mm (29.92") in Y against 600 mm (23.6 in) and 700 mm (27.6 in), carries 1,200 kg (2,645 lbs) against 800 kg (1,764 lb), and positions to ±0.001 mm against ±2.0 µm. The Mitsui Seiki H6D has more Z travel, 500 mm (19.7 in) against 300 mm (11.81"), and a 30-tool magazine as standard, where the tool changer on the Mitsui Seiki J6CN is an option.
Specifications Comparison
| Specification | Mitsui Seiki H6D | Mitsui Seiki J6CN |
|---|---|---|
| X-Axis Travel | 600 mm (23.6 in) | 1,020 mm (40.15") ▲ |
| Y-Axis Travel | 700 mm (27.6 in) | 760 mm (29.92") ▲ |
| Z-Axis Travel | 500 mm (19.7 in) ▲ | 300 mm (11.81") |
| Table Size | 630 x 500 mm (24.8 x 19.7 in) | 1,280 X 960 mm (50.39" x 37.79") |
| Max Table / Workpiece Load | 800 kg (1,764 lb) | 1,200 kg (2,645 lbs) ▲ |
| Max Spindle Speed | 6,000 rpm ▲ | 40~ 3200 RPM |
| Spindle Power | 15 kW (20 HP) continuous ▲ | AC 10 kW (7 hp) |
| Spindle Taper / Nose | BT50 | ISO no. 45 NT (Cat 45 -opt) (opt. 50 Taper) |
| Tool Capacity | 30 tools | Option: 20ATC; 60ATC |
| Rapid Traverse | 15 m/min (591 ipm) ▲ | 5,080 mm/min. (200 ipm) |
| Positioning Accuracy | +/-2.0 um | ± 0.001 mm (0.00004") ▲ |
| Repeatability | +/-1.0 um | ± 0.0005 mm (0.00002") ▲ |
| Control | Fanuc 31i-B | Fanuc 30iM-B |
| Machine Weight | 9,000 kg (19,842 lb) | 9,000 kgs (19,800 lbs) |
Advantages
Mitsui Seiki H6D
- 6,000 rpm spindle against a 40 to 3,200 rpm range
- Rapid traverse of 15 m/min (591 ipm) against 5,080 mm/min. (200 ipm)
- 500 mm (19.7 in) of Z travel against 300 mm (11.81")
- 30 tools as standard on a BT50 spindle with 15 kW (20 HP) continuous; the 20- or 60-tool changer on the Mitsui Seiki J6CN is an option
Mitsui Seiki J6CN
- Tighter published positioning accuracy: ±0.001 mm (0.00004") against ±2.0 µm
- Repeatability of ±0.0005 mm (0.00002") against ±1.0 µm
- Larger table and load: 1,280 x 960 mm and 1,200 kg (2,645 lbs) against 630 x 500 mm and 800 kg (1,764 lb)
- 1,020 mm (40.15") of X travel against 600 mm (23.6 in)
Verdict
Choose the Mitsui Seiki J6CN where bore location is the whole job: it publishes ±0.001 mm positioning and takes parts up to 1,200 kg (2,645 lbs) on a 1,280 x 960 mm table. Choose the Mitsui Seiki H6D when precision boring has to be combined with milling and multi-face work, where its 6,000 rpm spindle, 30 tools and 15 m/min (591 ipm) rapids shorten the cycle at ±2.0 µm positioning.