Machine Comparison
Makino a81nx vs Makino a91nx
Makino vs Makino · Horizontal Machining Centers
Summary
The Makino a81nx and Makino a91nx are both from Makino's horizontal machining centers lineup, making this a common upgrade or lineup decision for shops already invested in the Makino ecosystem. The Makino a91nx leads in x travel (1,050 mm (41.3 in) vs 900 mm (35.4 in)). The Makino a91nx leads in tool capacity (80 tools standard (expandable) vs 60 tools standard (expandable)). The Makino a91nx leads in spindle power (45 kW (60.3 hp) continuous vs 37 kW (49.6 hp) continuous). The Makino a91nx shows specification advantages in 7 categories, though the Makino a81nx may still be the better choice depending on your shop's specific needs and the type of work you run. Both machines are proven performers in production environments and represent solid investments for shops in the market for a horizontal machining center.
Specifications Comparison
| Specification | Makino a81nx | Makino a91nx |
|---|---|---|
| X-Axis Travel | 900 mm (35.4 in) | 1,050 mm (41.3 in) ▲ |
| Y-Axis Travel | 800 mm (31.5 in) | 900 mm (35.4 in) ▲ |
| Z-Axis Travel | 900 mm (35.4 in) | 1,000 mm (39.4 in) ▲ |
| Max Spindle Speed | 10,000 RPM (14,000 RPM optional HSK-A63) | 10,000 RPM |
| Spindle Power | 37 kW (49.6 hp) continuous | 45 kW (60.3 hp) continuous ▲ |
| Spindle Torque | 700 Nm (516 ft-lb) | 750 Nm (553 ft-lb) ▲ |
| Tool Capacity | 60 tools standard (expandable) | 80 tools standard (expandable) ▲ |
| Rapid Traverse | 50 m/min (1,969 ipm) | 50 m/min (1,969 ipm) |
| Accuracy | ±0.002 mm (±0.00008 in) | ±0.003 mm (±0.00012 in) |
| Repeatability | ±0.001 mm (±0.00004 in) | ±0.0015 mm (±0.00006 in) |
| Machine Weight | ~22,000 kg (48,502 lb) ▲ | ~30,000 kg (66,139 lb) |
| Control | Makino Professional 6 (Pro 6) | Makino Professional 6 (Pro 6) |
| Spindle Taper | HSK-A100 (HSK-A63 optional) | HSK-A100 |
| Pallet Size | 800 x 800 mm (31.5 x 31.5 in) | 1,000 x 1,000 mm (39.4 x 39.4 in) ▲ |
| Price Range | $700,000 - $1,000,000 ▲ | $900,000 - $1,400,000 |
Advantages
Makino a81nx
- Lighter at ~22,000 kg (48,502 lb), potentially easier installation and lower foundation requirements
- More competitive pricing at $700,000 - $1,000,000 compared to $900,000 - $1,400,000
- Backed by Makino's dealer and service network for parts and support
- Automotive and powertrain manufacturers machining large transmission cases, engine blocks, and structural castings in high volumes
Makino a91nx
- Greater x travel of 1,050 mm (41.3 in) accommodates larger workpieces
- Greater y travel of 900 mm (35.4 in) accommodates larger workpieces
- Greater z travel of 1,000 mm (39.4 in) accommodates larger workpieces
- More spindle power at 45 kW (60.3 hp) continuous for aggressive material removal in harder materials
- Superior spindle torque at 750 Nm (553 ft-lb) vs 700 Nm (516 ft-lb)
Verdict
The Makino a91nx edges ahead on specifications in this comparison, particularly in X Travel and Y Travel. However, the Makino a81nx remains competitive and may be the better choice depending on price, dealer support in your area, or specific workholding and tooling considerations. Both are capable machines — the best decision comes from running your actual parts and evaluating total cost of ownership including tooling, training, and service.