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Kanto Seiki Co., Ltd.
MSC Cradle Helps Engineers of Kanto Seiki to Improve Performance of High Precision Thermal Regulator

[Vol.1] Kanto Seiki develops and manufactures high-precision liquid temperature regulators for various industrial machine tools. Driven by its mission "We stand behind the brand", Kanto Seiki is regarded as a highly-trusted company that provides solutions for ultimate temperature control required by high-precision machining centers and semiconductor exposure equipment. To gain further insight regarding how heat is generated, the company uses scSTREAM, a general purpose thermo-fluid analysis software.

Picture 1: Example of Kanto Seiki's flagship product "OILMATIC". Non-CFC OILMATIC Vnx2200 (left), OILMATIC C Series (right)

High-precision liquid temperature regulators developed and manufactured by Kanto Seiki are widely used in various production sites both domestically and internationally. The company also offer factory automation systems including those for handling and transportation of machines. One of their flagship products is “OILMATIC” (Picture 1), an automatic liquid temperature regulator used in various industrial machines such as machine tool. Temperature regulators are generally referred to as “chillers”, but because the brand name OILMATIC has made inroads in the industry, it is not uncommon for similar products by other manufacturers to use this name in many production sites around the world.


Kanto Seiki originally started as a metal processing company, and the objective of suppressing thermal displacement lead them to pursue the development of temperature regulators for hydraulic oil used in machine tools. In 1965, they released the product under the brand name “OILMATIC”, and ever since then, it has achieved widespread use driven by the trend of increasing speed, precision, and numerical control in machine tools. Currently, they offer many other products including automatic mold temperature control machine “MOLDMATIC”, automatic water/pure water temperature regulator “PUREMATIC”, and for research institutes, super low temperature regulator “ICEMATIC”. Recently, the company has been focusing on environmental friendly developments and high efficiency designs. Most notably we see the industry’s first adoption of carbon dioxide refrigerants instead of chlorofluorocarbon (CFC) in OILMATIC along with ongoing efforts in the development of energy saving equipment.


The strongest competitive advantage they have as liquid temperature regulator professionals in the manufacturing field is the ability to provide finely tuned and customized products that meet end-user demands. Most of their products are tailor-made and provided with the most suitable specifications according to user requirements. Their responses and solutions to meet end-users demands including temperature control features, machine forms that are easy to install on site, and module type structures that can be quickly replaced in the event of a fault have received very high acclaim within the industries.

Picture 2: Mr. Wataru Namiki, R&D Division, Kanto Seiki Co., Ltd.

Offering Further Advice Regarding Client’s Design

Kanto Seiki implements the thermo-fluid simulation software scSTREAM in their study and analysis to solve various thermal problems. Mr. Namiki (Picture 2) explains, “Simply providing cooling features is not the end goal of our products. We are always aiming to achieve high cooling effects and energy savings all while meeting our customers’ requirements. This is where we use simulation.”

Figure 1: Temperature distribution in cross-section of press mold. Cooling efficiency is minimized as flow passage and heat source are far apart (Click to enlarge)


Figure 2: Temperature distribution (left) and flow velocity (right) of cooling water inside mold. Liquid temperature is higher in areas where flow velocity is lower (left). Flow is greater in areas where inlet and outlet are connected with the shortest distance (right) (Click to enlarge)

An example of this is the analysis of cooling water flowing through a press mold. A client designed a cylindrically shaped mold to be used for material extrusion molding. Although lubricant is applied to the material, molding will be performed several times, so the rise in temperature caused by the heat generated by plastic deformation cannot be avoided. This is why a structure to allow cooling water to flow is incorporated in the mold. However, they noticed that the cooling effect was not sufficient enough, reducing the effect of lubricant. To figure out the most effective flow passage for cooling water, they used scSTREAM to perform the analysis.


Analysis proved that the cooling effect was reduced because the section where cooling water flows and the section where heat is generated (Figure 1). It was also evident that the temperature of the section indicated in red exceeded 200 °C. Further looking at the flow velocity distribution in analysis results, they also identified that, although cooling water surrounds the mold in a cylindrical shape, the flow is not even, and the flow is greater in some areas than others (Figure 2).


Through analysis, they realized that a large rise in temperature cannot be avoided with the current structure. They informed their client that supplying low temperature cooling water with the current structure will not resolve the problem and offered advice to change the design.


Mr. Namiki explains, “With traditional methods using manual calculation, it is difficult to identify the actual water flow within the design. I was personally surprised with the analysis results showing that the unevenness in the flow was more significant than expected. Based on these results, we gave further advice to the client about their design. To be able to offer in- depth advice like this is our competitive advantage.”

*All product and service names mentioned are registered trademarks or trademarks of their respective companies.
*Contents and specifications of products are as of July 31, 2017 and subject to change without notice. We shall not be held liable for any errors in figures and pictures, or any typographical errors in this brochure.

Company Details


Kanto Seiki Co., Ltd.
Founded May 10, 1961
Business Development, design, manufacture, and sales of machine tools, semiconductor manufacturing machines, and high-precision liquid temperature control machines
President Tsuyoshi Ebisawa
Headquarters Maebashi-shi, Gunma, Japan



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