Machine Comparison
Makino a120nx vs OKK HM1000S
Makino vs OKK Corporation · Horizontal Machining Centers
Summary
The Makino a120nx from Makino and OKK HM1000S from OKK Corporation are direct competitors in the horizontal machining centers category. The Makino a120nx leads in rapid traverse (42 m/min (1,654 ipm) vs 36 m/min (1,417 ipm)). The Makino a120nx leads in tool capacity (100 tools standard (expandable) vs 60 tools (90 or 120 optional)). On paper, the Makino a120nx edges ahead with advantages in 8 of the compared specifications, though real-world performance depends heavily on your specific applications and workholding. 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 a120nx | OKK HM1000S |
|---|---|---|
| X-Axis Travel | 1,600 mm (63.0 in) | 1,600 mm (63.0 in) |
| Y-Axis Travel | 1,350 mm (53.1 in) ▲ | 1,300 mm (51.2 in) |
| Z-Axis Travel | 1,400 mm (55.1 in) ▲ | 1,300 mm (51.2 in) |
| Spindle Torque | 1,000 Nm (738 ft-lb) ▲ | 800 N-m (590 ft-lb) at low range |
| Tool Capacity | 100 tools standard (expandable) ▲ | 60 tools (90 or 120 optional) |
| Rapid Traverse | 42 m/min (1,654 ipm) ▲ | 36 m/min (1,417 ipm) |
| Accuracy | ±0.004 mm (±0.00016 in) ▲ | +/-5.0 um |
| Repeatability | ±0.002 mm (±0.00008 in) ▲ | +/-3.0 um |
| Control | Makino Professional 6 (Pro 6) | Fanuc 31i-B |
| Spindle Taper | HSK-A100 | BT50 |
| Pallet Size | 1,250 x 1,250 mm (49.2 x 49.2 in) ▲ | 1,000 x 1,000 mm (39.4 x 39.4 in) |
| Price Range | $1,800,000 - $2,800,000 | $500,000 - $750,000 ▲ |
Advantages
Makino a120nx
- Greater y travel of 1,350 mm (53.1 in) accommodates larger workpieces
- Greater z travel of 1,400 mm (55.1 in) accommodates larger workpieces
- Superior spindle torque at 1,000 Nm (738 ft-lb) vs 800 N-m (590 ft-lb) at low range
- Larger tool magazine with 100 tools standard (expandable) capacity reduces manual tool changes on complex parts
- Faster rapid traverse at 42 m/min (1,654 ipm) reduces non-cutting time between operations
OKK HM1000S
- More competitive pricing at $500,000 - $750,000 compared to $1,800,000 - $2,800,000
- Backed by OKK Corporation's dealer and service network for parts and support
- Power generation equipment manufacturers machining large turbine housings, generator frames, and valve bodies
Verdict
The Makino a120nx holds a spec advantage in this comparison, but the right choice depends on your shop's priorities. If the Makino a120nx's strengths in areas like Y Travel and Z Travel align with your work, it's the clear pick. The OKK HM1000S may still win on dealer proximity, existing tooling compatibility, or specific features that matter most to your applications. Request quotes from both dealers and, if possible, run your actual parts on each machine before deciding.