Machine Comparison
Makino a51nx vs Makino a61nx
Makino vs Makino · Horizontal Machining Centers
Summary
The Makino a51nx and Makino a61nx 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 a61nx leads in x travel (730 mm (28.7 in) vs 560 mm (22.0 in)). The Makino a61nx shows specification advantages in 4 categories, though the Makino a51nx 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 a51nx | Makino a61nx |
|---|---|---|
| X-Axis Travel | 560 mm (22.0 in) | 730 mm (28.7 in) ▲ |
| Y-Axis Travel | 640 mm (25.2 in) | 650 mm (25.6 in); 730 mm (28.7 in) with tall column option |
| Z-Axis Travel | 640 mm (25.2 in) | 800 mm (31.5 in) ▲ |
| Max Spindle Speed | 14,000 RPM | 14,000 RPM (20,000 RPM optional) |
| Spindle Power | 22 kW (30 hp) | 22 kW (30 hp) continuous; optional 60/80 kW with 20K RPM spindle |
| Spindle Torque | 240 Nm (177 ft-lb) | 240 Nm (177 ft-lb) duty-rated; 303 Nm (224 ft-lb) upgraded version |
| Tool Capacity | 60 (expandable to 120/180) | 60 tools standard (expandable with additional magazines) |
| Rapid Traverse | 60 m/min (2,362 ipm) | 60 m/min (2,362 ipm) |
| Accuracy | ±0.003 mm | ±0.002 mm (±0.00008 in) |
| Repeatability | ±0.002 mm | ±0.001 mm (±0.00004 in) |
| Control | Makino Professional 6 (Fanuc-based) | Makino Professional 6 (Pro 6) |
| Spindle Taper | HSK-A63 | HSK-A63 |
| Pallet Size | 400 x 400 mm (15.7 x 15.7 in) | 500 x 500 mm (19.7 x 19.7 in) ▲ |
| Max Workpiece Size | 630 x 900 mm (24.8 x 35.4 in) | Ø 800 x 1,000 mm (Ø 31.5 x 39.4 in) ▲ |
| Price Range | $250,000 - $350,000 ▲ | $500,000 - $700,000 |
Advantages
Makino a51nx
- More competitive pricing at $250,000 - $350,000 compared to $500,000 - $700,000
- Backed by Makino's dealer and service network for parts and support
- Production shops running 500+ piece batches of prismatic parts like valve bodies, hydraulic manifolds, and pump housings
Makino a61nx
- Greater x travel of 730 mm (28.7 in) accommodates larger workpieces
- Greater z travel of 800 mm (31.5 in) accommodates larger workpieces
- Superior pallet size at 500 x 500 mm (19.7 x 19.7 in) vs 400 x 400 mm (15.7 x 15.7 in)
- Superior max workpiece size at Ø 800 x 1,000 mm (Ø 31.5 x 39.4 in) vs 630 x 900 mm (24.8 x 35.4 in)
Verdict
The Makino a61nx edges ahead on specifications in this comparison, particularly in X Travel and Z Travel. However, the Makino a51nx 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.