Machine Comparison
Nakamura-Tome NTJ-100 vs Okuma MULTUS B200II
Nakamura-Tome vs Okuma · Mill-Turn Machines
Summary
The Nakamura-Tome NTJ-100 from Nakamura-Tome and Okuma MULTUS B200II from Okuma are direct competitors in the mill-turn machines category. The Okuma MULTUS B200II leads in rapid traverse (40 m/min (X, Z) vs 30 m/min (1,181 ipm)). The Okuma MULTUS B200II shows specification advantages in 9 categories, though the Nakamura-Tome NTJ-100 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 mill-turn machine.
Specifications Comparison
| Specification | Nakamura-Tome NTJ-100 | Okuma MULTUS B200II |
|---|---|---|
| Rapid Traverse | 30 m/min (1,181 ipm) | 40 m/min (X, Z) ▲ |
| Max Turning Diameter | 200 mm (7.87 in) | 630 mm (24.8 in) ▲ |
| Control | Fanuc 31i-B5 | Okuma OSP-P300SA |
| Main Spindle Speed | 5,000 RPM | 5,000 RPM |
| Main Spindle Power | 15 kW (20 HP) | 22/15 kW (30/20 hp) ▲ |
| Milling Spindle Power | 7.5 kW (10 HP) | 22/18.5 kW (30/25 hp) ▲ |
| Milling Spindle Speed | 12,000 RPM | 12,000 RPM |
| Y Axis Travel | 100 mm (+/- 50 mm) | 130 mm (5.1 in) ▲ |
| X Axis Travel | 195 mm (7.68 in) | 390 mm (15.4 in) ▲ |
| Z Axis Travel | 550 mm (21.65 in) | 750 mm (29.5 in) ▲ |
| Machine Weight | 7,000 kg (15,432 lb) approx. | 12,500 kg (27,558 lb) ▲ |
| Price Range | $400,000 - $600,000 (new) | $350,000 - $500,000 ▲ |
Advantages
Nakamura-Tome NTJ-100
- Backed by Nakamura-Tome's dealer and service network for parts and support
- Aerospace shops producing parts with angled holes and compound-angle features
Okuma MULTUS B200II
- Faster rapid traverse at 40 m/min (X, Z) reduces non-cutting time between operations
- Superior max turning diameter at 630 mm (24.8 in) vs 200 mm (7.87 in)
- Superior main spindle power at 22/15 kW (30/20 hp) vs 15 kW (20 HP)
- Superior milling spindle power at 22/18.5 kW (30/25 hp) vs 7.5 kW (10 HP)
- Superior y axis travel at 130 mm (5.1 in) vs 100 mm (+/- 50 mm)
Verdict
The Okuma MULTUS B200II edges ahead on specifications in this comparison, particularly in Rapid Traverse and Max Turning Diameter. However, the Nakamura-Tome NTJ-100 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.