Kuraki KBT-15DX
This model was not found in Kuraki's current lineup when we checked on 2026-10-03 . It may be a superseded or older model; the specifications below are as we last recorded them.
Key Specifications
X Travel
Y Travel
Z Travel
Rapid Traverse
Spindle Power
spindle diameter
How much does the Kuraki KBT-15DX cost?
Estimated price range
Our best estimate for a cnc boring machine in this class — not a quote from Kuraki. Configuration moves it a long way.
Overview
The Kuraki KBT-15DX carries a 150 mm (5.9 in) boring spindle over a 2,000 x 2,200 mm (78.7 x 86.6 in) rotary table, with travels of 3,000 x 2,200 x 2,000 mm (118.1 x 86.6 x 78.7 in). The current lineup of the maker does not list it, so it may be an older model, and the listed figures have not been verified.
Spindle diameter is the reason to choose this size. A 150 mm (5.9 in) spindle with 700 mm (27.6 in) of quill travel stays stiffer when extended than a smaller spindle would, which is what deep boring in large casings depends on. What that diameter gives up is speed: the range is 5 - 1,600 RPM, on 37 kW (50 HP). Small drills and end mills will run well below their best cutting speed.
The table grows more than its rating does. The KBT-13A is listed with a 15,000 kg (33,069 lb) table load, and the KBT-15DX has the same 15,000 kg (33,069 lb) limit on its larger table. Bulky parts fit; denser ones may reach the weight limit first. Table indexing accuracy is 3 arc-seconds, which helps when bores made from opposite sides have to meet.
Rapid traverse is 8 m/min (315 IPM). The 60-tool ATC and the facing head, up to 1,200 mm diameter, are both optional. The control is a Fanuc 31i-B5 and the machine weighs 42,000 kg (92,594 lb).
Full Specifications
| Parameter | Value |
|---|---|
| Spindle Diameter | 150 mm (5.9 in) |
| Spindle Speed | 5 - 1,600 RPM |
| Spindle Motor Power | 37 kW (50 HP) |
| Spindle Quill Travel | 700 mm (27.6 in) |
| X-Axis Travel | 3,000 mm (118.1 in) |
| Y-Axis Travel | 2,200 mm (86.6 in) |
| Z-Axis Travel | 2,000 mm (78.7 in) |
| Rotary Table Size | 2,000 x 2,200 mm (78.7 x 86.6 in) |
| Max Table Load | 15,000 kg (33,069 lb) |
| Table Indexing Accuracy | 3 arc-seconds |
| Rapid Traverse Rate | 8 m/min (315 IPM) |
| Facing Head | Optional, up to 1,200 mm diameter |
| CNC Control | Fanuc 31i-B5 |
| Machine Weight | 42,000 kg (92,594 lb) |
| Tool Magazine | 60-tool ATC (optional) |
Specifications compiled from manufacturer literature and industry references. Not independently verified against a published spec sheet — confirm with the manufacturer or an authorised dealer before making a purchasing decision.
Strengths & Limitations
Strengths
- 150 mm (5.9 in) spindle with 700 mm (27.6 in) of quill travel for deep boring
- Travels of 3,000 x 2,200 x 2,000 mm (118.1 x 86.6 x 78.7 in)
- Table indexing accuracy of 3 arc-seconds
- Rotary table of 2,000 x 2,200 mm (78.7 x 86.6 in)
- Optional facing head covers up to 1,200 mm diameter
Limitations
- Spindle speed tops out at 1,600 RPM
- Table load is 15,000 kg (33,069 lb), no more than the smaller KBT-13A
- The 60-tool ATC and the facing head are both optional
- Rapid traverse is 8 m/min (315 IPM) across 3,000 mm (118.1 in) of X
Best For
Frequently Asked Questions
01
For the bigger spindle and envelope. The KBT-15DX has a 150 mm (5.9 in) spindle, 37 kW (50 HP) and 2,000 mm (78.7 in) of Z, where the KBT-13A is listed with 30 kW (40 HP) and 1,500 mm (59.1 in) of Z. Table load is 15,000 kg (33,069 lb) on both, and both have rapids of 8 m/min (315 IPM).
02
The listed range is 5 - 1,600 RPM with 37 kW (50 HP). No torque figure is given in the table. The low top speed suits large boring bars and face mills; it is a limit for small tools, so jobs with many small holes will run slowly on this spindle.
03
It measures 2,000 x 2,200 mm (78.7 x 86.6 in), carries up to 15,000 kg (33,069 lb) and has a listed indexing accuracy of 3 arc-seconds. Y travel is 2,200 mm (86.6 in) and X travel is 3,000 mm (118.1 in). These are unverified figures to be confirmed on the machine.
04
No. The tool magazine row reads 60-tool ATC (optional), and the facing head, up to 1,200 mm diameter, is optional too. The machine weighs 42,000 kg (92,594 lb) as listed; the table does not say whether that includes either option.
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