Kitamura Mycenter HX630iG
Key Specifications
X Travel
Y Travel
Z Travel
Max Spindle
Spindle Taper
Tool Capacity
Overview
The Kitamura Mycenter HX630iG is a large-format horizontal machining center from Kitamura Machinery, the Japanese builder known for hand-scraped, hand-fitted machine construction that delivers accuracy levels typically reserved for jig borer class machines. The HX630iG carries a 630 x 630 mm (24.8 x 24.8 in) pallet and provides X/Y/Z travels of 1,050 x 800 x 850 mm (41.3 x 31.5 x 33.5 in), putting it in the medium-to-large HMC category alongside the Mazak HCN-6000, Okuma MA-600HII, and DMG Mori NHX 6300.
What separates the Kitamura from these competitors is its hand-scraped construction. Every sliding surface in the HX630iG is hand-scraped and fitted by skilled craftsmen, a process that takes significantly longer than machine-ground surfaces but produces superior geometric accuracy that improves with use as the scraped surfaces wear in. Kitamura is one of the few remaining builders that performs this level of hand craftsmanship on production machining centers. The result is positioning accuracy of 0.002 mm (0.00008 in) and repeatability of 0.001 mm (0.00004 in) — figures more commonly associated with coordinate measuring machines than horizontal machining centers.
The spindle delivers 30 kW (40 hp) at speeds up to 12,000 RPM through a BT50 (or HSK-A100) taper, providing the power and torque for aggressive face milling, boring, and pocketing in steel, cast iron, and aluminum. The B-axis rotary table indexes at 0.001-degree resolution. The standard 2-pallet changer enables loading while the machine cuts. Tool capacity is 60 tools standard, expandable to 120.
The HX630iG runs on Fanuc 31i-B control with Kitamura's Arumatik-Mi interface, which simplifies operation and provides advanced monitoring features. Kitamura's thermal compensation system uses multiple temperature sensors and real-time correction algorithms to maintain accuracy through temperature variations during extended production runs. New HX630iG machines price between $450,000 and $650,000.
Full Specifications
| Parameter | Value |
|---|---|
| Pallet Size | 630 x 630 mm (24.8 x 24.8 in) |
| X-Axis Travel | 1,050 mm (41.3 in) |
| Y-Axis Travel | 800 mm (31.5 in) |
| Z-Axis Travel | 850 mm (33.5 in) |
| Max Spindle Speed | 12,000 RPM |
| Spindle Taper | BT50 (HSK-A100 optional) |
| Spindle Motor Power | 30 kW (40 hp) |
| B Axis Resolution | 0.001° |
| Max Workpiece Weight | 1,200 kg (2,646 lb) per pallet |
| Tool Capacity | 60 tools standard (up to 120 optional) |
| Pallet Changer | 2-pallet APC standard |
| Rapid Traverse Rate | 60 m/min (2,362 ipm) |
| Positioning Accuracy | 0.002 mm (0.00008 in) |
| Repeatability | 0.001 mm (0.00004 in) |
| Construction | Hand-scraped and hand-fitted sliding surfaces |
| CNC Control | Fanuc 31i-B with Arumatik-Mi |
| Machine Weight | 18,500 kg (40,785 lb) |
Specifications sourced from cnczone.com — verified 2026-03-28
Strengths & Limitations
Strengths
- Hand-scraped sliding surfaces deliver jig-borer-class accuracy of 0.002 mm positioning and 0.001 mm repeatability on a full-size production HMC — a level of precision most competitors cannot match
- Hand-scraped surfaces actually improve with use as the mating surfaces wear in together, meaning accuracy increases over the first several years of operation rather than degrading
- BT50 spindle with 30 kW and 12,000 RPM provides excellent balance of torque for heavy face milling in steel and speed for aluminum finishing operations
- 630 mm pallets with 1,200 kg capacity handle substantial fixturing and medium-to-large workpieces suitable for automotive, aerospace, and heavy equipment applications
- Kitamura's thermal compensation system uses multiple temperature sensors for real-time geometric correction, maintaining accuracy through the temperature variations of production shifts
- Fanuc 31i-B control with Arumatik-Mi interface provides advanced operator-friendly features while maintaining full Fanuc compatibility for programming and integration
Limitations
- Kitamura's hand-scraped construction means longer lead times compared to mass-produced HMCs from Mazak, DMG Mori, and Okuma — typical lead is 4-6 months
- Smaller dealer and service network in North America compared to Mazak, Haas, and DMG Mori, which can impact emergency service response times
- 12,000 RPM spindle speed is adequate but lags behind some competitors offering 15,000-20,000 RPM options for high-speed aluminum machining
- 60-tool standard magazine may require the 120-tool upgrade for complex multi-operation parts, adding to the already premium base price
Best For
Frequently Asked Questions
01
New HX630iG machines price between $450,000 and $650,000 depending on configuration. Key options include HSK-A100 spindle upgrade, 120-tool magazine, through-spindle coolant, probing systems, and additional pallet storage. Kitamura machines tend to hold value well on the used market due to their hand-scraped construction — used units from 2016-2022 trade between $200,000 and $400,000.
02
Hand scraping is a manual finishing process where a skilled craftsman uses a hardened steel scraper to create a pattern of microscopic bearing points on machine tool sliding surfaces. This produces superior geometric accuracy compared to machine-ground surfaces because the craftsman can correct geometric errors that grinding cannot. The scraped surfaces also retain oil better, provide superior vibration damping, and actually improve in accuracy as they wear in over the first years of use.
03
The Mazak HCN-5000 has a smaller 500 mm pallet and less travel than the HX630iG, but offers faster rapids and Mazak's extensive service network. The Kitamura's hand-scraped construction delivers measurably better accuracy and repeatability. For shops where precision is the top priority, the Kitamura is the better choice. For shops prioritizing throughput, service support, and brand familiarity, the Mazak is the safer bet. The HX630iG is closer in size to the Mazak HCN-6800.
04
Yes, Kitamura offers multi-pallet pool configurations and can integrate with third-party linear pallet storage systems (Fastems, Liebherr) for extended unattended production. The 120-tool magazine option is recommended for automated cells to minimize tool-related interruptions. The Fanuc 31i-B control supports pallet scheduling and production management software integration.
05
Arumatik-Mi is Kitamura's proprietary operator interface that runs on top of the Fanuc 31i-B control. It provides graphical machine status monitoring, thermal compensation management, tool life tracking, and simplified setup functions. The interface does not replace Fanuc programming — operators can switch between Arumatik-Mi screens and standard Fanuc screens as needed. It makes daily operation more intuitive without sacrificing Fanuc flexibility for experienced programmers.
06
Hand-scraped surfaces on Kitamura machines typically maintain their original accuracy specification for 15-20 years of normal production use, and the surfaces can be re-scraped during a major overhaul to restore original accuracy. Many Kitamura machines from the 1990s and 2000s are still running within specification today. The initial accuracy actually improves during the first 1-2 years as the mating surfaces wear in together, creating progressively better contact patterns.
Videos
신성메카트로닉스
신성메카트로닉스
신성메카트로닉스
MÁY CƠ KHÍ - Á CHÂU
Community Discussions
Owner experience and review — New machine decision. Makino a51nx or Kitamura HX400iG/500 ...
Community discussion — I took your advice and bought a Mitutoyo : r/Machinists - Reddit
Troubleshooting and problem-solving — Kitamura mycenter 1 Issues : r/machining - Reddit
Community discussion — Anyone know how to clear This? : r/Machinists - Reddit
Links to community discussions. Summaries are editorial — visit the original thread for full context.



![[KITAMURA] Máy phay ngang CNC Mycenter HX400iG/500 - 0966548846](https://i.ytimg.com/vi/Mek0CKRsoyY/hqdefault.jpg)