Machine Comparison
Kuraki KBT-11DX vs Kuraki KBT-13A
Kuraki vs Kuraki · CNC Boring Machines
Summary
The Kuraki KBT-11DX and Kuraki KBT-13A are both from Kuraki's cnc boring machines lineup, making this a common upgrade or lineup decision for shops already invested in the Kuraki ecosystem. The Kuraki KBT-13A leads in x travel (2,500 mm (98.4 in) vs 1,800 mm (70.9 in)). The Kuraki KBT-11DX leads in rapid traverse (10 m/min (394 IPM) vs 8 m/min (315 IPM)). The Kuraki KBT-13A leads in spindle power (30 kW (40 HP) vs 22 kW (30 HP)). The Kuraki KBT-13A shows specification advantages in 10 categories, though the Kuraki KBT-11DX 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 cnc boring machine.
Specifications Comparison
| Specification | Kuraki KBT-11DX | Kuraki KBT-13A |
|---|---|---|
| X-Axis Travel | 1,800 mm (70.9 in) | 2,500 mm (98.4 in) ▲ |
| Y-Axis Travel | 1,400 mm (55.1 in) | 2,000 mm (78.7 in) ▲ |
| Z-Axis Travel | 1,200 mm (47.2 in) | 1,500 mm (59.1 in) ▲ |
| Spindle Power | 22 kW (30 HP) | 30 kW (40 HP) ▲ |
| Rapid Traverse | 10 m/min (394 IPM) ▲ | 8 m/min (315 IPM) |
| Control | Fanuc 31i-B | Fanuc 31i-B |
| Spindle Diameter | 110 mm (4.3 in) | 130 mm (5.1 in) ▲ |
| Spindle Speed | 5 - 3,000 RPM | 5 - 2,000 RPM |
| Spindle Quill Travel | 500 mm (19.7 in) | 600 mm (23.6 in) ▲ |
| Rotary Table Size | 1,250 x 1,400 mm (49.2 x 55.1 in) | 1,600 x 1,800 mm (63 x 71 in) ▲ |
| Max Table Load | 8,000 kg (17,637 lb) | 15,000 kg (33,069 lb) ▲ |
| Table Indexing Accuracy | 5 arc-seconds | 5 arc-seconds |
| Facing Head | Optional, up to 800 mm diameter | Optional, up to 1,000 mm diameter ▲ |
| Machine Weight | 22,000 kg (48,502 lb) | 32,000 kg (70,548 lb) ▲ |
| Price Range | $350,000 - $550,000 ▲ | $450,000 - $700,000 |
Advantages
Kuraki KBT-11DX
- Faster rapid traverse at 10 m/min (394 IPM) reduces non-cutting time between operations
- More competitive pricing at $350,000 - $550,000 compared to $450,000 - $700,000
- Backed by Kuraki's dealer and service network for parts and support
- Medium-sized casting and weldment machining in general heavy industry job shops
Kuraki KBT-13A
- Greater x travel of 2,500 mm (98.4 in) accommodates larger workpieces
- Greater y travel of 2,000 mm (78.7 in) accommodates larger workpieces
- Greater z travel of 1,500 mm (59.1 in) accommodates larger workpieces
- More spindle power at 30 kW (40 HP) for aggressive material removal in harder materials
- Superior spindle diameter at 130 mm (5.1 in) vs 110 mm (4.3 in)
Verdict
The Kuraki KBT-13A edges ahead on specifications in this comparison, particularly in X Travel and Y Travel. However, the Kuraki KBT-11DX 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.