Machine Comparison
Okuma MB-4000H vs Okuma MB-5000HII
Okuma vs Okuma · Horizontal Machining Centers
Summary
The Okuma MB-4000H and Okuma MB-5000HII are both from Okuma's horizontal machining centers lineup, making this a common upgrade or lineup decision for shops already invested in the Okuma ecosystem. These machines are closely matched across most specifications, making the decision more about specific feature priorities, dealer support, and your existing shop ecosystem than raw spec advantages. 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 | Okuma MB-4000H | Okuma MB-5000HII |
|---|---|---|
| Max Spindle Speed | 15,000 RPM | 15,000 RPM (12,000 or 20,000 RPM optional) |
| Spindle Power | 26/18.5 kW (10 min/continuous) (35/25 hp) | 26 kW (35 hp) standard; 30 kW (40 hp) or 33 kW (44 hp) optional |
| Tool Capacity | 48 tools | 48 tools (up to 340 with wine rack magazine) |
| Control | Okuma OSP-P500M | Okuma OSP-P500 (OSP-P300MA on pre-2024 units) |
| 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 | ø600 x 900 mm (ø23.6 x 35.4 in) | Dia. 800 x 1,000 mm (Dia. 31.5 x 39.4 in) ▲ |
| Spindle Taper | No. 40 (BT40) | No. 40 (No. 50 optional with 12,000 RPM spindle) |
| Price Range | $250,000 - $375,000 ▲ | $378,000 - $500,000 |
Advantages
Okuma MB-4000H
- More competitive pricing at $250,000 - $375,000 compared to $378,000 - $500,000
- Backed by Okuma's dealer and service network for parts and support
- Job shops entering horizontal machining for the first time, where the MB-4000H's competitive pricing and box-way rigidity provide excellent value
Okuma MB-5000HII
- 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 Dia. 800 x 1,000 mm (Dia. 31.5 x 39.4 in) vs ø600 x 900 mm (ø23.6 x 35.4 in)
- Backed by Okuma's dealer and service network for parts and support
- High-volume aluminum and non-ferrous component production where the 20,000 RPM spindle option and fast rapids maximize material removal rates
Verdict
This is a close matchup. The Okuma MB-4000H and Okuma MB-5000HII trade advantages across different specifications, making neither a clear winner on paper alone. Your decision should come down to practical factors: which dealer is closer, which control system your operators already know, what tooling ecosystem you're invested in, and which machine's specific strengths match your highest-volume work. Get quotes on both, run test cuts with your actual parts if possible, and factor in long-term service and support costs.