Machine Comparison
Okuma MB-46VAE vs Okuma MB-56V
Okuma vs Okuma · Vertical Machining Centers
Summary
The Okuma MB-46VAE and Okuma MB-56V are both from Okuma's vertical machining centers lineup, making this a common upgrade or lineup decision for shops already invested in the Okuma ecosystem. The Okuma MB-56V leads in x travel (1,050 mm (41.3 in) vs 560 mm (22.0 in)). The Okuma MB-56V shows specification advantages in 5 categories, though the Okuma MB-46VAE 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 vertical machining center.
Specifications Comparison
| Specification | Okuma MB-46VAE | Okuma MB-56V |
|---|---|---|
| X-Axis Travel | 560 mm (22.0 in) | 1,050 mm (41.3 in) ▲ |
| Y-Axis Travel | 460 mm (18.1 in) | 560 mm (22.0 in) ▲ |
| Z-Axis Travel | 460 mm (18.1 in) | 460 mm (18.1 in) |
| Max Spindle Speed | 8,000 RPM (standard); 15,000 / 20,000 / 25,000 / 35,000 RPM optional | 8,000 RPM (standard); 15,000 / 20,000 / 25,000 / 35,000 RPM optional |
| Spindle Power | 11/7.5 kW (15/10 hp) standard; 22/18.5 kW (30/25 hp) optional | 11/7.5 kW (15/10 hp) standard; 22/18.5 kW (30/25 hp) optional |
| Tool Capacity | 20 (standard); 32, 48, or 98 optional | 20 (standard); 32, 48, or 98 optional |
| Rapid Traverse | 32 m/min (X/Y); 24 m/min (Z) | 32 m/min (X/Y); 24 m/min (Z) |
| Table Size | 760 x 460 mm (29.9 x 18.1 in) | 1,300 x 560 mm (51.2 x 22.0 in) ▲ |
| Accuracy | ±0.004 mm | ±0.004 mm |
| Repeatability | ±0.002 mm | ±0.002 mm |
| Control | OSP-P300A | OSP-P300A |
| Spindle Taper | BT 40 | BT 40 |
| Max Table Load | 500 kg (1,102 lb) | 800 kg (1,764 lb) ▲ |
| Machine Weight | 4,600 kg (10,141 lb) | 6,300 kg (13,889 lb) ▲ |
| Price Range | $95,000 - $125,000 ▲ | $130,000 - $170,000 |
Advantages
Okuma MB-46VAE
- More competitive pricing at $95,000 - $125,000 compared to $130,000 - $170,000
- Backed by Okuma's dealer and service network for parts and support
- Mold and die shops that need exceptional surface finish and vibration damping for finish passes
Okuma MB-56V
- Greater x travel of 1,050 mm (41.3 in) accommodates larger workpieces
- Greater y travel of 560 mm (22.0 in) accommodates larger workpieces
- Superior table size at 1,300 x 560 mm (51.2 x 22.0 in) vs 760 x 460 mm (29.9 x 18.1 in)
- Superior max table load at 800 kg (1,764 lb) vs 500 kg (1,102 lb)
- Superior machine weight at 6,300 kg (13,889 lb) vs 4,600 kg (10,141 lb)
Verdict
The Okuma MB-56V edges ahead on specifications in this comparison, particularly in X Travel and Y Travel. However, the Okuma MB-46VAE 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.