What Saginomiya Seisakusho does

Saginomiya Seisakusho, Inc. (株式会社鷺宮製作所) is a Japanese industrial manufacturer founded in 1940 as the Bellows Research Institute and incorporated in 1948, headquartered in Shinjuku, Tokyo with 1,117 employees as of March 2025. The company operates two business divisions: Automatic Control Equipment and Dynamic Servo (Testing Equipment). The Automatic Control Equipment division produces expansion valves (UKV, LKV, AKV, VKV, PKV, GKV series), solenoid valves, regulating and packless valves, semiconductor pressure sensors (NSK, XSK, YSK, HSK series), temperature switches and EEV controllers (YNE, LNE series) for HVAC/R, semiconductor manufacturing, medical, and industrial applications. The Dynamic Servo division designs and manufactures the DiM (Driver In Motion) driving simulator (DiM50/150/300 models), material fatigue, vibration, and torsional test systems, automotive component testers (CRH, ASH, KCH, ABH), and energy-saving hydraulic power units (HTP series) used by automotive OEMs for model-based development, plus construction, aerospace, and railway testing applications.

Revenue is generated primarily through direct B2B sales of components and capital equipment, supplemented by commissioned testing services and DiM rental at the Saginomiya Technical Laboratory in Sayama. Pricing is quote-based with multi-year contract cadence typical of industrial OEM procurement. Distribution occurs through wholly-owned domestic sales subsidiaries (Saginomiya Sanki, Kyushu Saginomiya, Meiko Kiki, Nihon GT) and overseas operating companies in China (Foshan Wahlu since 1994, Wuxi Jite, Shanghai branch), Thailand (since 2005), the USA (Saginomiya America since 2008, NGT Controls), and Poland (Saginomiya Europe since 2011), with a strategic Danfoss joint venture in Poland (since 2002) for solenoid valve manufacturing and Danfoss product distribution.

The company is family-controlled through four generations of the Nishimi (西見) family, with Shigeyuki Nishimi as President since 2017 and Yuichiro Nishimi as Chairman. Saginomiya is privately held with no public listing or external institutional investors disclosed. R&D is anchored at the Sayama R&D Center with active collaborations with the University of Tokyo and Shizuoka University on MEMS vibration energy harvesting, and participation in the NMEMS Technology Research Consortium. The company is currently executing its 'Progress90' medium-term management plan toward its 90th anniversary in 2030.

Name

Saginomiya Seisakusho

Legal name

株式会社鷺宮製作所

Website

https://saginomiya.co.jp

Company type

Private

Founded year

1940

Operating status

Operating

Headcount range

251–500 employees

Short description

Saginomiya Seisakusho is a Japanese industrial manufacturer (founded 1940, 1,117 employees) producing automatic control components (expansion valves, pressure sensors, solenoid valves) for HVAC/R and semiconductor OEMs, plus driving simulators and test systems for automotive model-based development, distributed globally through wholly-owned subsidiaries in Japan, China, Thailand, the USA, and Poland.

Ownership category

akta.pro rank

Product category

Industrial Control Equipment

NAICS

Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use (334512), Other Measuring and Controlling Device Manufacturing (334519), Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing (333415)

SIC

Electrical Industrial Apparatus (3620), Industrial Instruments For Measurement, Display, And Control (3823), Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585)

akta.pro primary industry

Industrial Controllers & Control Systems (PLCs, PACs, CNC Controllers) (IMAHAHAH)

akta.pro secondary industries

Test, Measurement & Calibration Equipment Manufacturing Services (ATE, DAQ, metrology electronics) (IMAGAGAH), Motion Control Components (Servos, Drives, Motors, Encoders) (IMAHAHAG)

Keywords

• HVAC control valves
• Pressure sensors
• Driving simulators
• Refrigeration components
• Material testing systems

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices16 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Automatic Control Equipment Sales: Sale of automatic control equipment including expansion valves, solenoid valves, pressure sensors, pressure switches, temperature switches, and related control devices. Products serve HVAC/R, automotive, semiconductor, medical, and industrial applications. Revenue is generated through direct sales and domestic group company distribution networks.
2. Testing Equipment Sales and Services: Sale and service of testing and simulation equipment including driving simulators (DiM), material testing systems, vibration testing systems, fatigue testing systems, and energy-saving hydraulic units. Customized solutions for automotive, construction, aerospace, and railway sectors.
3. Contract Testing Services: Commissioned testing services using company-owned testing equipment for material fatigue, spring characteristics, and dynamic measurements.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels5 records

Core offering

Saginomiya Seisakusho manufactures automatic control equipment—including expansion valves, solenoid valves, pressure sensors, temperature switches, and packless valves—for HVAC/R, semiconductor, automotive, and industrial applications. The company also produces testing and dynamic servo equipment such as the DiM driving simulator, material fatigue test systems, vibration test systems, and energy-saving hydraulic power units for automotive, aerospace, railway, and construction sectors. The company additionally distributes Danfoss refrigeration components in Japan.

Product overview

Saginomiya Seisakusho operates two main business divisions: Automatic Control Equipment and Dynamic Servo (Testing Equipment). The Automatic Control Equipment division is a leading manufacturer of control devices for HVAC/R (heating, ventilation, air conditioning, and refrigeration) systems, offering expansion valves (UKV, LKV, AKV, VKV, PKV, GKV series), solenoid valves, regulating/check valves, pressure sensors (NSK, XSK, YSK, HSK series), temperature switches/thermostats (ALE, BLE series), electronic expansion valve controllers (YNE, LNE series), and packless valves (NBV, SBV, ADV series). The company also distributes Danfoss products under partnership. The Dynamic Servo division provides testing and simulation equipment centered on the DiM (Driver In Motion) driving simulator series (DiM50/150/300) for automotive model-based development, along with material/vibration/fatigue test systems, electric servo test systems, steering HILS (CRH), shock absorber testers (ASH), high-frequency rubber testing (KCH), and energy-saving hydraulic power units (HTP series). Both divisions serve diverse industries including automotive, construction, railways, aviation, semiconductors, and medical equipment.

Differentiator

Problem solved

Functional benefit

Brands

• DiM: Driver In Motion - a driving simulator used for vehicle model-based development (MBD), allowing drivers to experience vehicle behavior in real-time during the design phase. Available in DiM50, DiM150, and DiM300 models.

Products and services

• Expansion Valves Expansion valves that control refrigerant flow in HVAC/R systems. Product line includes UKV series electronic expansion valves for room/package air conditioners, LKV quiet electronic expansion valves, UKV-J/JKV CO2 refrigerant electric valves, AKV/VKV/MKV electric valves for chillers, and PKV/GKV low/ultra-low temperature electronic expansion valves. For HVAC/R and refrigeration OEMs.
• Solenoid Valves Electromagnetic valves for controlling refrigerant flow in air conditioning, refrigeration, and freezing applications. Includes bidirectional flow capable models and hot gas compatible specifications. For HVAC/R OEMs.
• Regulating, Water Regulating, and Check Valves Control valves for adjusting water flow and pressure, including pressure-type and temperature-type water regulating valves, backflow preventers, and flow control valves for condensers and cooling systems.
• Pressure Sensors (NSK, XSK, YSK, HSK Series) Semiconductor pressure sensors for HVAC/R and semiconductor fabrication applications. NSK series offers high precision and durability with current and voltage outputs; XSK series provides 4-20mA output; YSK covers 0-5MPa range; HSK designed for CO2 refrigerant. For HVAC/R manufacturers and semiconductor equipment makers.
• Temperature Switches and Other Switches Temperature control devices including digital thermostats (ALE series) with LCD display, humidityistats (BLE digital humidistat), general-purpose temperature switches (EWS/FWS/LWS/RWS), room thermostats (ARS/WRS), and flow switches (FQS/CQS/AQS).
• Electronic Expansion Valve Controllers (YNE/LNE Series) EEV controllers and drivers for electronic expansion valves. YNE is an EEV controller; LNE is a driver for electronic expansion valves and electric proportional valves, supporting RS-485 (Modbus) communication with up to 2-channel operation.
• Packless Valves (NBV, SBV, ADV Series) Bellows seal and diaphragm type stop valves for preventing external leakage. Used in heating, air conditioning, and general industrial equipment with full fluorocarbon refrigerant circuits.
• DiM (Driver In Motion) Driving Simulator High-response driving simulator for model-based development (MBD) in automotive engineering. Features hexapod table combined with tripod system, electric servo actuators, and motion cueing algorithms. Available in DiM50, DiM150, and DiM300 models. Enables virtual vehicle evaluation before physical prototyping.
• Material Fatigue Test Systems Material testing systems for fatigue strength, static spring characteristics, and dynamic characteristics. Includes LFH electric servo fatigue testing machines, BCH electric servo testing machines with gantry frames, and LMH micro-load fatigue testing machines.
• Vibration Test Systems Vibration testing equipment for evaluating product durability and performance under various conditions.

Quantifiable outcome

• MBD development cycle reduction through DiM virtual validation
• +2 more outcomes

Named customers5 records

Segments6 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Ten partnerships are on record, tiered core and minor.

• 東京大学 (University of Tokyo) - 年吉研究室coreStrategic or Co-development Partner · 1 January 2019Collaborative research partner on MEMS energy harvesting technology. Joint research on 'MEMS Energy Harvester for IoT Sensors Using Unused Environmental Vibrations' awarded Minister of Economy, Trade and Industry Award.
• 静岡大学 (Shizuoka University) - 橋口研究室coreStrategic or Co-development Partner · 1 January 2019Collaborative research partner on MEMS energy harvesting technology development.
• Danfoss Saginomiya Sp. z o.o. (Joint Venture)coreChannel Partner/ Reseller/ Distributor · 1 January 2002Joint venture with Danfoss established in Poland (2002) for manufacturing and distributing Danfoss products in the region. Danfoss Saginomiya Sp. z o.o. is located in Grodzisk Mazowiecki, Poland.
• Danfoss (Distribution Partnership)coreChannel Partner/ Reseller/ DistributorSaginomiya distributes Danfoss products alongside its own products through its sales network in Japan. The partnership includes joint exhibition at trade shows like HVAC&R JAPAN.
• サギノミヤホールディングス株式会社 (Saginomiya Holdings)coreOthersParent holding company overseeing Saginomiya group operations including Saginomiya Seisakusho, Saginomiya Sanki, Nihon GT, Meiko Kiki, and Kyushu Saginomiya.
• サギノミヤ産機株式会社 (Saginomiya Sanki)coreChannel Partner/ Reseller/ DistributorDomestic sales company handling Saginomiya and Danfoss products in Japan, along with processed insulation materials and related components.
• 日本ジー・ティー株式会社 (Nihon GT)coreStrategic or Co-development PartnerGroup company manufacturing bimetal thermostats. Exhibits jointly at trade shows including AHR EXPO and HVAC&R JAPAN.
• 名光機器株式会社 (Meiko Kiki)minorChannel Partner/ Reseller/ DistributorGroup company handling sales of automatic control equipment products.
• 九州鷺宮冷熱部品株式会社 (Kyushu Saginomiya)minorChannel Partner/ Reseller/ DistributorRegional sales company in Kyushu region handling automatic control equipment and related products.
• NMEMS技術研究機構 (NMEMS Technology Research Consortium)coreStrategic or Co-development PartnerTechnology research consortium contributing to CEATEC AWARD 2020 Grand Prize for advanced MEMS technology. Saginomiya participates in this industry consortium.

Scale indicators7 records

Recent moves7 records

Expansion highlights6 records

Broad incumbents

• Danfoss A/S: Global Danish incumbent in HVAC/R components, refrigeration controls, and industrial automation. Long-standing JV and distribution partner with Saginomiya; comparable on product overlap (expansion valves, pressure controls) at much larger scale.
• Honeywell International: US conglomerate with a major Building Automation and HVAC controls franchise. Competes in commercial HVAC/R controls and increasingly in industrial sensing; broad portfolio across many of Saginomiya's served end markets.
• Emerson Electric Co. Diversified US industrial technology major with strong HVAC/R, refrigeration, and process control portfolios (including Copeland and Fisher). Competitor and potential alternative supplier to many of Saginomiya's global OEM customers.
• AVL List GmbH: Austrian mobility and powertrain engineering specialist providing simulation, testing, and validation services including driving simulators. Competes with Saginomiya's Dynamic Servo division in automotive testing, at significantly larger scale.

Direct peers

• VI-Grade: Provider of driving simulation software and hardware-in-the-loop solutions for vehicle dynamics and ADAS development. Directly competes against Saginomiya's DiM simulator in the automotive model-based development market and is itself integrated with DiM (VI-CarRealTime).
• Sanhua Group: Chinese manufacturer of HVAC/R components including electronic expansion valves, solenoid valves, and pressure sensors for global commercial and residential cooling markets. Directly competes with Saginomiya's automatic control product lines on cost.
• AB Dynamics plc: UK-based supplier of driving robots, ADAS test platforms, and driving simulators used by global OEMs and Tier 1 suppliers. Directly comparable to Saginomiya's DiM and automotive testing equipment portfolio.
• Fujikoki Corporation: Japan-based manufacturer of expansion valves, solenoid valves, and flow/pressure control devices for HVAC/R and refrigeration applications. Most direct head-to-head competitor for Saginomiya in Japanese automatic control equipment.
• Moog Inc. US manufacturer of high-performance motion control products including electric servo actuators and test systems. Directly comparable to Saginomiya's electric servo and Hexapod/Tripod simulator platform technologies.

Regional players

• Sanden Holdings Corporation: Japanese manufacturer of automotive air-conditioning compressors and HVAC/R components. Overlaps with Saginomiya in Japan-based HVAC/R component supply to OEMs and refrigeration markets.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 records

Subsidiaries12 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Saginomiya Seisakusho