Machine Comparison
Okuma MA-4000H vs Okuma MA-500HII
Okuma vs Okuma · Horizontal Machining Centers
Summary
The Okuma MA-4000H and Okuma MA-500HII are Okuma horizontal machining centers on the OSP-P500M control, both rapiding at 60 m/min (2,362 ipm). The MA-4000H is a 40-taper machine with a 400 × 400 mm (15.7 × 15.7 in) pallet; the MA-500HII is a 50-taper machine with a 500 × 500 mm (19.69 × 19.69 in) pallet.
The MA-4000H lists the higher peak power, 38/18.5 kW (51/25 hp) against 30/22 kW (40/30 hp), though the MA-500HII has the higher second figure, 22 kW against 18.5 kW. Tooling depends on options: the MA-4000H starts at 48 tools and goes to 340, the MA-500HII starts at 40 and goes to 400. The choice is between a fast 40-taper machine for lighter alloys and a No. 50 machine for steel and cast iron.
Specifications Comparison
| Specification | Okuma MA-4000H | Okuma MA-500HII |
|---|---|---|
| Pallet Size | 400 × 400 mm (15.7 × 15.7 in) | 500 × 500 mm (19.69 × 19.69 in) |
| Spindle Power | 38/18.5 kW (51/25 hp) ▲ | 30/22 kW (40/30 hp) |
| Tool Capacity | 48 [64, 140, 180, 220, 260, 300, 340] | 40 [60, 81, 111, 141, 171, 195, 225, 255, 285, 320, 400] |
| Rapid Traverse | 60 m/min (2,362 ipm) | 60 m/min (2,362 ipm) |
Advantages
Okuma MA-4000H
- 38/18.5 kW (51/25 hp) peak spindle power against 30/22 kW (40/30 hp)
- 48 tools standard against 40
- No. 40 (BT40) spindle for fast aluminum and cast iron production
Okuma MA-500HII
- No. 50 taper for heavy cutting in steel, titanium and cast iron
- 500 × 500 mm pallet against 400 × 400 mm
- Higher second power rating, 22 kW against 18.5 kW
- Tool options up to 400 against 340
Verdict
The Okuma MA-4000H is for high-volume aluminum and cast iron parts in automotive, aerospace and die-cast work, where a 40-taper spindle and a matrix magazine of up to 340 tools keep cells running. The Okuma MA-500HII is for heavier cutting in steel, titanium and alloy steel, such as engine blocks, valve bodies and structural parts, where the No. 50 spindle and 500 × 500 mm pallet matter more. Choose by material and part size.