Kuraki KBT-13A

Est. $450,000 - $700,000 Possible older model Specs verified 2026-03-28 · machinetools.com Updated 2026-10-03

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 It may be a superseded or older model; the specifications below are as we last recorded them.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

2,500 mm (98.4 in)

Y Travel

2,000 mm (78.7 in)

Z Travel

1,500 mm (59.1 in)

Rapid Traverse

8 m/min (315 IPM)

Spindle Power

30 kW (40 HP)

spindle diameter

130 mm (5.1 in)

How much does the Kuraki KBT-13A cost?

Estimated price range

Est.$450,000 - $700,000

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-13A is a horizontal boring machine built around a rotary table of 1,600 x 1,800 mm (63 x 71 in) that carries up to 15,000 kg (33,069 lb), with a 30 kW (40 HP) spindle running from 5 - 2,000 RPM. The model is not part of the maker's current lineup and may be an older one. The listed figures were taken from an unverified table.

That table disagrees with itself in two places. X travel and spindle size each appear in two rows with different figures, so neither is quoted on this page, and both should be measured on the machine. The other axes are consistent: 2,000 mm (78.7 in) in Y, 1,500 mm (59.1 in) in Z and 600 mm (23.6 in) of spindle quill travel.

A long Z together with a 600 mm (23.6 in) quill is what lets the spindle reach deep into a casing set back on the table. Rapid traverse is 8 m/min (315 IPM), so positioning takes a noticeable share of a cycle with many separate features. The KBM-13RX, a much larger machine of the same brand, is listed at 60 kW (80.4 hp) and 10 m/min (394 ipm).

Table indexing accuracy is 5 arc-seconds. Both the 60-tool ATC and the facing head, up to 1,000 mm diameter, are listed as optional, so confirm what is fitted. The control is a Fanuc 31i-B, and the machine weighs 32,000 kg (70,548 lb).

Full Specifications

Parameter	Value
Spindle Diameter	130 mm (5.1 in)
Spindle Speed	5 - 2,000 RPM
Spindle Motor Power	30 kW (40 HP)
Spindle Quill Travel	600 mm (23.6 in)
X-Axis Travel	2,500 mm (98.4 in)
Y-Axis Travel	2,000 mm (78.7 in)
Z-Axis Travel	1,500 mm (59.1 in)
Rotary Table Size	1,600 x 1,800 mm (63 x 71 in)
Max Table Load	15,000 kg (33,069 lb)
Table Indexing Accuracy	5 arc-seconds
Rapid Traverse Rate	8 m/min (315 IPM)
Facing Head	Optional, up to 1,000 mm diameter
CNC Control	Fanuc 31i-B
Machine Weight	32,000 kg (70,548 lb)
Tool Magazine	60-tool ATC (optional)
Spindle Size	7.87 in
X Horiz Tvl of Table	118.11 in

Specifications sourced from machinetools.com — verified 2026-03-28

Strengths & Limitations

Strengths

Rotary table of 1,600 x 1,800 mm (63 x 71 in) with a 15,000 kg (33,069 lb) load limit
1,500 mm (59.1 in) of Z travel plus 600 mm (23.6 in) of spindle quill travel
30 kW (40 HP) spindle with a speed range of 5 - 2,000 RPM
Table indexing accuracy of 5 arc-seconds

Limitations

Rapid traverse is 8 m/min (315 IPM)
The 60-tool ATC is optional, so a machine may have no automatic tool change
The facing head, up to 1,000 mm diameter, is an extra and not standard
X travel and spindle size are each listed twice with different figures and need to be measured

Best For

Large housings and casings up to 15,000 kg (33,069 lb) Deep bores reached with 600 mm (23.6 in) of quill travel Four-sided machining on the rotary table at 5 arc-seconds indexing accuracy Facing of flanges where the optional facing head is fitted

Frequently Asked Questions

01 What load can the KBT-13A table carry?

Maximum table load is listed as 15,000 kg (33,069 lb) on a rotary table of 1,600 x 1,800 mm (63 x 71 in). Fixtures count toward the limit. Table indexing accuracy is 5 arc-seconds, which matters when a part is machined from several sides in one clamping.

02 What are the axis travels of the KBT-13A?

Y is listed at 2,000 mm (78.7 in), Z at 1,500 mm (59.1 in) and spindle quill travel at 600 mm (23.6 in). X travel appears twice in the table with two different figures, so it is not stated here. Measure the table's cross travel on the machine before committing a long part to it.

03 Which options should be checked on a KBT-13A?

Two. The tool magazine is a 60-tool ATC marked optional, and the facing head, up to 1,000 mm diameter, is optional as well. A machine without the magazine needs manual tool changes, and one without the facing head cannot face or groove large diameters with a single-point tool.

04 How does the KBT-13A compare with the KBM-13RX?

The KBM-13RX is far larger, listed with 60 kW (80.4 hp), 5,000 Nm at S1, a 2,000 x 2,000 mm (78.7 x 78.7 in) rotary table and a machine weight of approximately 80,000 kg (176,370 lb). The KBT-13A has 30 kW (40 HP) and weighs 32,000 kg (70,548 lb), so it fits where foundation and crane capacity are more limited.