Kuraki KBM-11RX
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 It may be a superseded or older model; the specifications below are as we last recorded them.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
Max Spindle
Table Size
Rapid Traverse
How much does the Kuraki KBM-11RX 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 KBM-11RX is a horizontal boring machine with a 110 mm (4.33 in) spindle and a column that traverses 4,000 mm (157 in) in X, working over an 1,800 x 1,800 mm (70.9 x 70.9 in) rotary table. It is not in the maker's current lineup and may be an older model, and the listed figures have not been checked against a manufacturer page.
The X row is labelled column traverse, so the column carries the spindle along the work while the part stays on the rotary table. Vertical travel is 2,000 mm (78.7 in). Reach toward the work is split across two rows: 900 mm (35.4 in) on Z, labelled spindle axial, and a 700 mm (27.6 in) quill on W. X travel is more than twice the table width, which suits long workpieces or setups that extend past the table, so ask how the machine was configured.
The cutting figures point to roughing and large-diameter boring. The spindle is rated 45 kW (60.3 hp) and 3,000 Nm at S1, with a top speed of 2,500 RPM. The KBM-13RX is listed with 60 kW (80.4 hp), 5,000 Nm at S1 and 2,000 RPM, which makes the KBM-11RX the lighter and faster-turning machine of the two.
The table takes a workpiece of up to 20,000 kg (44,092 lb) and rapid traverse is 12 m/min (472 ipm). Tool taper is listed as SK 50 / HSK-A100, so the taper actually fitted has to be identified before tooling is bought. Control is a Fanuc 31i-B5. At approximately 55,000 kg (121,254 lb), the machine needs its own foundation and rigging plan.
Full Specifications
| Parameter | Value |
|---|---|
| Spindle Diameter | 110 mm (4.33 in) |
| X-Axis Travel | 4,000 mm (157 in) — column traverse |
| Y-Axis Travel | 2,000 mm (78.7 in) — vertical |
| Z-Axis Travel | 900 mm (35.4 in) — spindle axial |
| W Axis Travel | 700 mm (27.6 in) — quill |
| Max Spindle Speed | 2,500 RPM |
| Spindle Motor Power | 45 kW (60.3 hp) |
| Spindle Torque | 3,000 Nm at S1 |
| Table Size | 1,800 x 1,800 mm (70.9 x 70.9 in) rotary table |
| Max Workpiece Weight | 20,000 kg (44,092 lb) |
| Rapid Traverse Rate | 12 m/min (472 ipm) |
| Tool Taper | SK 50 / HSK-A100 |
| CNC Control | Fanuc 31i-B5 |
| Machine Weight | 55,000 kg (121,254 lb) approximate |
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
- 4,000 mm (157 in) of column traverse in X with 2,000 mm (78.7 in) of vertical travel
- Spindle rated 45 kW (60.3 hp) and 3,000 Nm at S1
- 1,800 x 1,800 mm (70.9 x 70.9 in) rotary table carrying up to 20,000 kg (44,092 lb)
- Rapid traverse of 12 m/min (472 ipm), against 10 m/min (394 ipm) on the KBM-13RX
Limitations
- Top spindle speed is 2,500 RPM, which limits small-diameter tooling
- Less torque than the KBM-13RX, which is listed at 5,000 Nm at S1 against 3,000 Nm at S1 here
- Weighs approximately 55,000 kg (121,254 lb), so foundation and rigging are major items
- Tool taper is listed as SK 50 / HSK-A100 without saying which one a given machine has
Best For
Frequently Asked Questions
01
The listed figures are 4,000 mm (157 in) in X as column traverse, 2,000 mm (78.7 in) in Y as vertical travel and 900 mm (35.4 in) in Z, labelled spindle axial. A W axis adds a 700 mm (27.6 in) quill. The rotary table is 1,800 x 1,800 mm (70.9 x 70.9 in). None of these has been verified, so measure them on the machine.
02
The KBM-13RX is the larger machine: 5,000 mm (196.9 in) of X, 60 kW (80.4 hp), 5,000 Nm at S1 and a 2,000 x 2,000 mm (78.7 x 78.7 in) rotary table. The KBM-11RX has 4,000 mm (157 in) of X, 45 kW (60.3 hp) and 3,000 Nm at S1, but it turns faster at 2,500 RPM and its rapid traverse is 12 m/min (472 ipm).
03
Maximum workpiece weight is listed as 20,000 kg (44,092 lb) on the 1,800 x 1,800 mm (70.9 x 70.9 in) rotary table. Count fixtures and angle plates toward that limit. The machine itself weighs approximately 55,000 kg (121,254 lb).
04
The tool taper row reads SK 50 / HSK-A100, two different interfaces, and the table does not say which is standard. Check the spindle of the machine on offer before budgeting for holders. The control is listed as a Fanuc 31i-B5. No tool magazine is listed in the table.
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