Machine Comparison
Makino a91nx vs Makino a92
Makino vs Makino · Horizontal Machining Centers
Summary
The Makino a91nx and Makino a92 are large CAT50 horizontal machining centers of nearly the same size. Both have 1,350 mm (53.1 in) of Z travel, a 2,000 kg workpiece load with 3,000 kg available, and a 10,000 rpm standard spindle. The a92 carries a longer 800 x 1,000 mm (31.5 in x 39.4 in) pallet against the a91nx's 800 x 800 mm (31.5 in x 31.5 in).
The a92 also has a little more travel, 1,520 mm (59.8 in) X and 1,250 mm (49.2 in) Y against 1,400 mm (55.1 in) and 1,200 mm (47.2 in), its optional spindles reach 20,000 rpm against 15,000, and its optional magazines run to 316 tools. The a91nx starts with 60 tools against 40, changes tools in 1.8 sec against 1.9 sec, and rapids at 60,000 mm/min (2,362 ipm) against 50,000 mm/min (1,969 ipm).
Specifications Comparison
| Specification | Makino a91nx | Makino a92 |
|---|---|---|
| X-Axis Travel | 1,400 mm (55.1 in) | 1,520 mm (59.8 in) ▲ |
| Y-Axis Travel | 1,200 mm (47.2 in) | 1,250 mm (49.2 in) ▲ |
| Z-Axis Travel | 1,350 mm (53.1 in) | 1,350 mm (53.1 in) |
| Pallet Size | 800 x 800 mm (31.5 in x 31.5 in) | 800 x 1,000 mm (31.5 in x 39.4 in) |
| Max Table / Workpiece Load | 2,000 kg (3,000 kg) (4,400 lb. (6,600 lb.)) | 2,000 kg (option 3,000 kg) (4,400 lb (option 6,600 lb)) |
| Max Spindle Speed | 10,000 rpm (8,000, 15,000) | 10,000 rpm (8,000, 20,000) |
| Spindle Taper / Nose | CAT50 (HSK-A100) | CAT50 (HSK-A100 optional) |
| Tool Capacity | 60 (185, 297) ▲ | 40 (60, 92, 148, 204, 316) |
| Tool Change (tool-to-tool) | 1.8 sec (2.2 sec) ▲ | 1.9 sec |
| Rapid Traverse | 60,000 mm/min (2,362 ipm) ▲ | 50,000 mm/min (1,969 ipm) |
Advantages
Makino a91nx
- 60 tools as standard against 40
- 1.8 sec tool-to-tool change against 1.9 sec
- 60,000 mm/min (2,362 ipm) rapids against 50,000 mm/min (1,969 ipm)
Makino a92
- 800 x 1,000 mm (31.5 in x 39.4 in) pallet against 800 x 800 mm (31.5 in x 31.5 in)
- 1,520 mm (59.8 in) X and 1,250 mm (49.2 in) Y travel against 1,400 mm (55.1 in) and 1,200 mm (47.2 in)
- Optional spindle up to 20,000 rpm against 15,000 rpm
- Optional magazines up to 316 tools against 297
Verdict
Choose the Makino a92 for diesel engine blocks and other long castings that use its 800 x 1,000 mm pallet and 1,520 mm (59.8 in) of X travel, or for high-mix work that needs 204 or 316 tools on the machine. Choose the Makino a91nx for oversized castings and housings that fit an 800 x 800 mm pallet, where 60 standard tools, 60,000 mm/min rapids and a 1.8 sec tool change matter more than the extra length.