Machine Comparison
Makino a71nx vs Makino a81nx
Makino vs Makino · Horizontal Machining Centers
Summary
The Makino a71nx and Makino a81nx are both CAT50 horizontal machining centers with a 10,000 rpm spindle, 60 tools as standard and a 1.7 sec tool change. The headline difference is size: the a81nx moves up to a 630 mm x 630 mm (24.8 in x 24.8 in) pallet from the a71nx's 500 x 500 mm (19.7 in x 19.7 in).
The a81nx also has more travel, 900 mm (35.4 in) X, 900 mm (35.4 in) Y and 1,020 mm (40.2 in) Z against 800 mm (31.5 in), 750 mm (29.5 in) and 830 mm (32.7 in), and a 1,200 kg workpiece load (1,500 kg as an option) against 1,000 kg. It offers an optional 8,000 rpm High Torque spindle, with rapids of 36,000 mm/min in that version. The a71nx keeps a marginally shorter chip-to-chip time, 3.6 sec against 3.7 sec.
Specifications Comparison
| Specification | Makino a71nx | Makino a81nx |
|---|---|---|
| X-Axis Travel | 800 mm (31.5 in) | 900 mm (35.4 in) ▲ |
| Y-Axis Travel | 750 mm (29.5 in) | 900 mm (35.4 in) ▲ |
| Z-Axis Travel | 830 mm (32.7 in) | 1,020 mm (40.2 in) ▲ |
| Pallet Size | 500 x 500 mm (19.7 in x 19.7 in) | 630 mm x 630 mm (24.8 in x 24.8 in) |
| Max Table / Workpiece Load | 1,000 kg | 1,200 kg (1,500 kg opt) (2,645 lb (3,307 lb opt)) ▲ |
| Max Spindle Speed | 10,000 rpm | 10,000 rpm (8,000 High Torque optional) |
| Spindle Taper / Nose | CAT50 (HSK-A100 optional) | CAT50 (HSK-A100 optional) |
| Tool Capacity | 60 (136, 187 & 299) | 60 (80, 136, 187, 299 optional) |
| Tool Change (tool-to-tool) | 1.7 sec (≤ 20kg) | 1.7 sec (12 kg tool) |
| Chip-to-Chip Time | 3.6 sec (≤ 20kg) ▲ | 3.7 sec |
| Rapid Traverse | (X / Y) 50,000 mm/min / (Z) 60,000 mm/min ((X / Y) 1,968 ipm, (Z) 2,362 ipm) | 50,000 mm/min (Std) / 36,000 mm/min (High Torque) (1,968 in/min (Std) / 1,417 in/min (High Torque)) |
Advantages
Makino a71nx
- 3.6 sec chip-to-chip time against 3.7 sec
- Handles heavy-cutting ferrous parts up to 1,000 kg on a 500 x 500 mm (19.7 in x 19.7 in) pallet without moving up a size class
Makino a81nx
- 630 mm x 630 mm (24.8 in x 24.8 in) pallet against 500 x 500 mm (19.7 in x 19.7 in)
- 900 mm (35.4 in) X, 900 mm (35.4 in) Y and 1,020 mm (40.2 in) Z travel against 800 mm (31.5 in), 750 mm (29.5 in) and 830 mm (32.7 in)
- 1,200 kg workpiece load, or 1,500 kg with the option, against 1,000 kg
- Optional 8,000 rpm High Torque spindle for heavy roughing of iron castings
Verdict
The Makino a71nx fits heavy cutting of ferrous parts on a 500 mm pallet, with parts up to 1,000 kg. Step up to the Makino a81nx for larger prismatic parts, line boring and hard-metal aerospace work on a 630 mm pallet, where 1,020 mm (40.2 in) of Z travel, the 1,500 kg optional load rating and the optional High Torque spindle justify the bigger machine.