Kuraki KBM-13RX
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 It may be a superseded or older model; the specifications below are as we last recorded them.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-13RX 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
With 60 kW (80.4 hp) and 5,000 Nm at S1 behind a 130 mm (5.12 in) spindle, the Kuraki KBM-13RX is a heavy horizontal boring machine for parts weighing up to 30,000 kg (66,139 lb). Kuraki's current lineup does not show the model, so it may be an older one. The listed figures come from an unverified table and each should be confirmed against the machine's own documents.
Its scale is easiest to see next to another machine of the brand. The KBT-13A is listed with 30 kW (40 HP) and a 15,000 kg (33,069 lb) table load. The KBM-13RX has twice the power and twice the load, on a 2,000 x 2,000 mm (78.7 x 78.7 in) rotary table. Column traverse in X is 5,000 mm (196.9 in) and vertical travel in Y is 2,500 mm (98.4 in).
All that torque arrives at low speed. The spindle tops out at 2,000 RPM, so the machine is built around large boring bars and face mills, not small drills and end mills. Depth of reach comes from 1,000 mm (39.4 in) of Z, labelled spindle axial, plus an 800 mm (31.5 in) quill on W.
Three things need settling before a purchase: which taper is fitted, since the row reads SK 50 / HSK-A100; whether the Fanuc 31i-B5 named in the table is the control on the machine; and how approximately 80,000 kg (176,370 lb) of machine will be moved and founded. Rapid traverse is 10 m/min (394 ipm), slow positioning across 5,000 mm (196.9 in) of X.
Full Specifications
| Parameter | Value |
|---|---|
| Spindle Diameter | 130 mm (5.12 in) |
| X-Axis Travel | 5,000 mm (196.9 in) — column traverse |
| Y-Axis Travel | 2,500 mm (98.4 in) — vertical |
| Z-Axis Travel | 1,000 mm (39.4 in) — spindle axial |
| W Axis Travel | 800 mm (31.5 in) — quill |
| Max Spindle Speed | 2,000 RPM |
| Spindle Motor Power | 60 kW (80.4 hp) |
| Spindle Torque | 5,000 Nm at S1 |
| Table Size | 2,000 x 2,000 mm (78.7 x 78.7 in) rotary table |
| Max Workpiece Weight | 30,000 kg (66,139 lb) |
| Rapid Traverse Rate | 10 m/min (394 ipm) |
| Tool Taper | SK 50 / HSK-A100 |
| CNC Control | Fanuc 31i-B5 |
| Machine Weight | 80,000 kg (176,370 lb) approximate |
Specifications sourced from machinetools.com — verified 2026-03-28
Strengths & Limitations
Strengths
- 5,000 Nm at S1 and 60 kW (80.4 hp) at the spindle
- Maximum workpiece weight of 30,000 kg (66,139 lb) on a 2,000 x 2,000 mm (78.7 x 78.7 in) rotary table
- Working envelope of 5,000 mm (196.9 in) in X and 2,500 mm (98.4 in) in Y
- 130 mm (5.12 in) spindle with an 800 mm (31.5 in) quill on W
Limitations
- Spindle speed is limited to 2,000 RPM
- Rapid traverse of 10 m/min (394 ipm) makes long X moves slow
- Machine weight of approximately 80,000 kg (176,370 lb) dictates the foundation, crane and transport
- The taper row gives SK 50 / HSK-A100 without stating which is fitted
Best For
Frequently Asked Questions
01
The listed figures are 60 kW (80.4 hp) and 5,000 Nm at S1, with a maximum speed of 2,000 RPM, on a 130 mm (5.12 in) spindle. The torque row does not give the speed at which that torque is available, so ask for the spindle's power and torque diagram.
02
The rotary table is 2,000 x 2,000 mm (78.7 x 78.7 in) and the maximum workpiece weight is 30,000 kg (66,139 lb). Travels are 5,000 mm (196.9 in) in X, 2,500 mm (98.4 in) in Y and 1,000 mm (39.4 in) in Z, with an 800 mm (31.5 in) quill on W. Treat these as unverified until measured.
03
The KBT-13A is listed with 30 kW (40 HP), a 15,000 kg (33,069 lb) table load, 8 m/min (315 IPM) rapids and a machine weight of 32,000 kg (70,548 lb). The KBM-13RX has 60 kW (80.4 hp), takes 30,000 kg (66,139 lb), moves at 10 m/min (394 ipm) and weighs approximately 80,000 kg (176,370 lb).
04
Machine weight is approximately 80,000 kg (176,370 lb) before any workpiece, and the workpiece can add up to 30,000 kg (66,139 lb). Foundation design, crane capacity and transport all follow from those two figures. The table gives no floor space or electrical supply data, so those must come from the installation drawings.
