Used Kuraki Machines We Buy

Who Makes Kuraki Machines

Kuraki machines come from Kuraki Co., Ltd. of Nagaoka, in Niigata Prefecture, Japan. Kurabo Industries founded the company there in 1938, and Kuraki says it has built horizontal boring and milling machines from the beginning. Its head office and plant are at Jooka, in Nagaoka.

In September 2023 DMG MORI announced it would buy all of Kuraki's shares from Kurabo Industries, bringing 295 employees into its group. Kuraki's own site said it became part of the DMG MORI Group on January 5, 2024, and on April 1, 2024 the company was renamed DMG MORI Precision Boring Co., Ltd. The headquarters and factories stayed in Nagaoka. Kuraki says it has delivered about 7,000 horizontal boring and milling machines worldwide.

Kuraki America and DMG MORI in the US

Kuraki began exporting to the US in the late 1970s and set up Kuraki America Corp. in 1981, which handled import, sales and service of Kuraki machines in the USA, Canada and Mexico.

DMG MORI formed a US sales alliance with Kuraki in 2017, and by 2022 its exclusive sales territory for Kuraki covered 32 states. In those states DMG MORI USA became the exclusive sales and service organization for the Kuraki line of horizontal boring mills.

Kuraki's Lines and Controls

Kuraki's English site, in its last archived copy from March 2024, sorted its machine tools into CNC horizontal boring machines, CNC combined milling machines and gun drilling machines. Its catalog list named the KBT series of CNC horizontal boring mills, the KBM 11EM and 11SX models, and the KZM-14R, KTR-1200 and HMC+110 horizontal machining centers. A separate specialized machinery side built the KIP, KNCP and KRM series. That is where the list on the archived page stops.

Kuraki also builds table types for long and multiple workpieces and combination tables that pair a fixed table with a rotary table. On controls, the company says its current production machines use only FANUC Series 31i controls. An older Kuraki may carry an earlier control, so send us the control model along with the plate.

KBT Boring Mills by Spindle Size

The current KBT data sheet groups the boring mills by boring spindle diameter:

From the KBT data sheet published by DMG MORI as DMG MORI Precision Boring. Older KBT strings on our listings, such as KBT-1003W or KBT-11WDX, are not on this sheet, so we read them from the plate.

What Decides the Offer on a Used Kuraki

A Kuraki boring mill is built around its boring spindle, the W-axis. The KBT data sheet describes a dual spindle, an outer milling spindle and an inner boring spindle that rotate together, supported by large bearings at three points. The company hand-scrapes the rotary table guideways and the X, Y and Z guideways, and the KBT series comes standard with a 360-degree rotating, hand-scraped rotary table.

So on a used Kuraki we look at the spindle size and how the W-axis runs, wear on the ways, and whether the rotary table still indexes cleanly. The table type, the travels and the control set the starting range, and condition moves it from there.

DMG MORI Service, or Selling Outright

DMG MORI USA offers service and spare parts for Kuraki machines through its own channels, and DMG MORI said one aim of the purchase was to keep after-sales service available. That network is the right call for a Kuraki you plan to keep cutting. For one you want off the floor, we buy it outright, and records of a spindle repair or a recent service visit are worth sending with the details.

What Is Actually in the 129 Kuraki Listings

This hub holds 129 listings and one brand. Boring iron carries it. The category field files 26 rows as CNC Boring Mills, 5 as CNC Horizontal Boring Mills (HBM), and 4 more under a separate string, CNC Horizontal Boring Mills, for 35 boring rows in total. Machining centers account for 15, split 10 CNC Vertical Machining Centers (VMC) and 5 CNC Horizontal Machining Centers (HMC). CNC Lathes is 5 rows. The remaining 74 sit in Metal Cutting, a general bucket in the category field rather than a machine type, so those rows say nothing about what the machine on that listing actually does. Across the 129 listings the catalog records 88 distinct model designations. The listings that record a build year run from 1978 to 2023, and 97 of the 129 carry a year at all. Kuraki ranks 39th of the 126 brands on the site, which makes this a focused single-brand hub.

KBT: The Boring Mill Line This Hub Is Built On

KBT is the largest model family here by a wide margin. It rolls up 58 of the 129 listings, and the next family, KV, has 8. The catalog types 54 of those 58 as Metal Cutting 34, CNC Boring Mills 16, and CNC Horizontal Boring Mills 4. The data behind this page does not record a category for the other four, so we do not guess at them. The designations a seller actually types are in the model field. KBT-11WDX appears on 6 listings. KBT-10DX and KBT-1003W appear on 4 each, KBT-13E on 3, and KBT-13, KBT13-DXA, KBT 11DXA, KBT 10DXA, KBT 13DXA, KBT 11WDXA, KBT-13EA, KBT-11WA and KBT-1101P on 2 each. Two more tokens roll up separately because the family key reads the leading characters: KBT1003W at 3 and KBT13 at 2. That puts a verified floor of at least 63 listings carrying a KBT-prefixed designation. Single listings carry KBT1103D, KBT-10DX-ANP, KBT13PDX and KBT11-DX.

KV, KMV, KHM and KBM: Beyond the KBT

Not everything under this brand is a KBT. KV is the second-largest family at 8 listings, filed 4 as CNC Vertical Machining Centers (VMC) and 4 as Metal Cutting, which is one group of eight machines recorded under two category strings, not two separate groups. KHM has 4 listings, 2 of them typed CNC Horizontal Machining Centers (HMC). KBM has 4, one typed VMC. KMV has 3, one typed VMC. MH has 3, one typed HMC. The named models in this part of the book are KV-2000 on 3 listings, KV-700 on 2, KV-500 on 1, KMV-130 on 3, KHM-125 on 3, MH-630 on 3 and KBM 11A on 1. These are lines that come through the book, not depth. Six further designations appear twice each, and the category data behind this page does not reach them: KH6, KBM11X, KBH, KMB, KTB and CMN. We buy them the same way; we just will not label them.

LC Lathes, AKB Borers and the Long Tail

Turning is the thinnest part of this hub. CNC Lathes is 5 rows out of 129, and the LC family accounts for 3 of them, all three filed as CNC Lathes, which makes LC the only family the catalog files entirely as turning. LC-403 is the model string on all three. AKB has 3 listings, 2 filed Metal Cutting and 1 filed CNC Boring Mills, with AKB 13 appearing twice. KBT1003W has 3 listings, one of which is typed CNC Horizontal Boring Mills (HBM). Four listings roll up under the KURAKI family key, two carrying nothing but the brand name in the model field and two reading KURAKI KBT 11WA. Then the tail. The families the catalog reports run down to a count of 2 and add to 107, which leaves 22 listings sitting in single-listing designations. That is why 88 distinct model strings appear across only 129 listings, and why an odd model is still worth sending.

The String on the Data Plate, Character for Character

Eighty-eight distinct model designations across 129 listings is dense for a single-brand hub this size, and the model field shows why. One designation is recorded five different ways: KBT-11WDX on 6 listings, KBT 11WDXA on 2, and KBT11WDX, KBT-11WDX ID and KBT-11WDXA on one listing apiece. Another appears as KBT-1003W on 4 listings and KBT1003W on 3, and that second spelling is common enough that it rolls up as its own model family. A third reads KBT-11WA, KBT - 11WA with spaces around the hyphen, and KURAKI KBT 11WA, two listings each. A fourth clusters KBT-10DX, KBT-10DXA, KBT 10DXA and KBT-10DX-ANP. A fifth runs KBT-13, KBT-13E, KBT-13EA, KBT13-DXA, KBT 13DXA and KBT13PDX. Two listings carry only KBT in the model field and two carry only KURAKI. Our catalog records every one of those as a separate string, which is precisely why we ask for the plate string exactly as it reads.

Selling a Kuraki: Footprint, Rigging and Payment

Kuraki is on the short list of brands MTE names publicly as equipment it buys, alongside Giddings and Lewis, Toshiba, Union, Wotan and Scharmann, and TOS. Because 35 of the 129 rows here are boring rows, footprint and rigging access drive the conversation more than a spec sheet does. The process runs three steps. Send brand, model, year, condition and control type; photos help but are not required. A quote comes back typically within 24 to 48 hours. On acceptance MTE can arrange rigging, crating and freight, arrange the pickup, and cover all 50 states. We are a direct buyer, not a broker or a listing service: purchased outright, no consignment, and we can arrange the pickup. Running, idle or decommissioned all get looked at, and one machine is handled like a full floor. Mazak, Haas, Okuma, Doosan, DMG MORI and Makino equipment goes on the same truck if you are clearing a mixed shop.