Machine Comparison
Makino a81nx vs Makino a91nx
Makino vs Makino · Horizontal Machining Centers
Summary
The Makino a81nx and Makino a91nx are CAT50 horizontal machining centers one size apart. Both run a 10,000 rpm standard spindle and start with 60 tools. The a91nx is the larger machine: an 800 x 800 mm (31.5 in x 31.5 in) pallet against 630 mm x 630 mm (24.8 in x 24.8 in), and a 2,000 kg (4,400 lb.) workpiece load, or 3,000 kg on the higher rating, against 1,200 kg (1,500 kg optional).
The a91nx also travels further, 1,400 mm (55.1 in) X, 1,200 mm (47.2 in) Y and 1,350 mm (53.1 in) Z against 900 mm (35.4 in), 900 mm (35.4 in) and 1,020 mm (40.2 in), and rapids at 60,000 mm/min (2,362 ipm) against 50,000 mm/min (1,968 in/min) on the a81nx with its standard spindle. The a81nx has the quicker tool change, 1.7 sec against 1.8 sec.
Specifications Comparison
| Specification | Makino a81nx | Makino a91nx |
|---|---|---|
| X-Axis Travel | 900 mm (35.4 in) | 1,400 mm (55.1 in) ▲ |
| Y-Axis Travel | 900 mm (35.4 in) | 1,200 mm (47.2 in) ▲ |
| Z-Axis Travel | 1,020 mm (40.2 in) | 1,350 mm (53.1 in) ▲ |
| Pallet Size | 630 mm x 630 mm (24.8 in x 24.8 in) | 800 x 800 mm (31.5 in x 31.5 in) |
| Max Table / Workpiece Load | 1,200 kg (1,500 kg opt) (2,645 lb (3,307 lb opt)) | 2,000 kg (3,000 kg) (4,400 lb. (6,600 lb.)) ▲ |
| Max Spindle Speed | 10,000 rpm (8,000 High Torque optional) | 10,000 rpm (8,000, 15,000) |
| Spindle Taper / Nose | CAT50 (HSK-A100 optional) | CAT50 (HSK-A100) |
| Tool Capacity | 60 (80, 136, 187, 299 optional) | 60 (185, 297) |
| Tool Change (tool-to-tool) | 1.7 sec (12 kg tool) ▲ | 1.8 sec (2.2 sec) |
| Rapid Traverse | 50,000 mm/min (Std) / 36,000 mm/min (High Torque) (1,968 in/min (Std) / 1,417 in/min (High Torque)) | 60,000 mm/min (2,362 ipm) ▲ |
Advantages
Makino a81nx
- 1.7 sec tool-to-tool change against 1.8 sec
- Sized for large prismatic parts on a 630 mm x 630 mm (24.8 in x 24.8 in) pallet, without stepping up to the 800 mm class
Makino a91nx
- 800 x 800 mm (31.5 in x 31.5 in) pallet against 630 mm x 630 mm (24.8 in x 24.8 in)
- 2,000 kg (4,400 lb.) workpiece load, 3,000 kg on the higher rating, against 1,200 kg (1,500 kg optional)
- 1,400 mm (55.1 in) X, 1,200 mm (47.2 in) Y and 1,350 mm (53.1 in) Z travel against 900 mm (35.4 in), 900 mm (35.4 in) and 1,020 mm (40.2 in)
- 60,000 mm/min (2,362 ipm) rapids against 50,000 mm/min (1,968 in/min)
Verdict
Choose the Makino a81nx for large prismatic parts, hard-metal aerospace work and long boring-bar jobs that fit a 630 mm x 630 mm pallet and stay within 1,500 kg on the load option. Choose the Makino a91nx for oversized castings and housings that need 1,400 mm (55.1 in) of X travel, an 800 x 800 mm pallet and up to 3,000 kg on the higher rating, or for a cell that needs 297 tools on the machine.