Machine Comparison
Makino a61nx vs Makino a71nx
Makino vs Makino · Horizontal Machining Centers
Summary
The Makino a61nx and Makino a71nx both carry a 500 x 500 mm (19.7 in x 19.7 in) pallet, but they are built for different cutting. The a61nx is a CAT40 machine geared to speed; the a71nx is a CAT50 machine with double the rated workpiece load, 1,000 kg against 500 kg (option 700 kg).
The a61nx spindle runs to 14,000 rpm against 10,000 rpm, it changes tools in 0.9 sec against 1.7 sec, and its chip-to-chip time is 2.5 sec against 3.6 sec. It rapids at 60,000 mm/min on all axes, where the a71nx lists 50,000 mm/min on X and Y. The a71nx has slightly more travel: 800 mm (31.5 in) X, 750 mm (29.5 in) Y and 830 mm (32.7 in) Z against 730 mm (28.7 in), 730 mm (28.7 in) and 800 mm (31.5 in).
Specifications Comparison
| Specification | Makino a61nx | Makino a71nx |
|---|---|---|
| X-Axis Travel | 730 mm (28.7 in) | 800 mm (31.5 in) ▲ |
| Y-Axis Travel | 730 mm (28.7 in) | 750 mm (29.5 in) ▲ |
| Z-Axis Travel | 800 mm (31.5 in) | 830 mm (32.7 in) ▲ |
| Pallet Size | 500 x 500 mm (19.7 in x 19.7 in) | 500 x 500 mm (19.7 in x 19.7 in) |
| Max Table / Workpiece Load | 500 kg (option 700 kg) (1,100 lb (option 1,540 lb)) | 1,000 kg ▲ |
| Max Spindle Speed | 14,000 rpm (20,000) ▲ | 10,000 rpm |
| Spindle Taper / Nose | CAT40 (HSK-A63 optional) | CAT50 (HSK-A100 optional) |
| Tool Capacity | 60 tools (optional 133, 218, 313) | 60 (136, 187 & 299) |
| Tool Change (tool-to-tool) | 0.9 sec ▲ | 1.7 sec (≤ 20kg) |
| Chip-to-Chip Time | 2.5 sec ▲ | 3.6 sec (≤ 20kg) |
| Rapid Traverse | 60,000 mm/min ▲ | (X / Y) 50,000 mm/min / (Z) 60,000 mm/min ((X / Y) 1,968 ipm, (Z) 2,362 ipm) |
Advantages
Makino a61nx
- 14,000 rpm CAT40 spindle against 10,000 rpm
- 0.9 sec tool-to-tool and 2.5 sec chip-to-chip against 1.7 sec and 3.6 sec
- 60,000 mm/min rapids on all axes against 50,000 mm/min on X and Y
Makino a71nx
- 1,000 kg workpiece load against 500 kg (option 700 kg)
- CAT50 taper (HSK-A100 optional) for heavy cutting and large tools
- 800 mm (31.5 in) X, 750 mm (29.5 in) Y and 830 mm (32.7 in) Z travel against 730 mm (28.7 in), 730 mm (28.7 in) and 800 mm (31.5 in)
Verdict
Choose by material and cutting load. The Makino a61nx suits high-volume production of cast iron and steel parts with many tapped holes, where 14,000 rpm and 0.9 sec tool changes cut cycle time. The Makino a71nx suits heavy cutting of ferrous parts and hard metals that need a 50-taper spindle, and fixtures up to 1,000 kg on the same 500 x 500 mm pallet.