What Sankyo Seisakusho Co does

Sankyo Seisakusho Co., Ltd. (株式会社三共製作所) is a privately held Japanese precision automation manufacturer founded in 1938 by Ryohei Ogawa and headquartered in Tokyo, with primary production at the 54,000 m² Shizuoka facility — described as the world's largest cam-only factory. The company specializes in cam-based motion control, having developed Japan's first roller gear cam-type indexing drive in 1973, and now holds 628 patents covering proprietary zero-backlash preloading mechanisms, rolling transmission structures, and pinion-cam drive architectures. Its product portfolio includes the RollerDrive series (zero-backlash reducers and positioners), SANDEX indexing drives, CNC rotary tables, Variax press coil feeders, TorqueLimiters, welding positioners, LinerUnit linear drives, Servo-dex motor-core indexing systems for EV/HEV production, and pallet changers for machine tools.

The company serves enterprise OEMs across automotive, aerospace, medical, food, and machine tool manufacturing, with horizontal segmentation across five use-case segments rather than vertical specialization. Sankyo generates revenue primarily through one-time hardware sales of precision positioning and automation equipment, supplemented by aftermarket repair, overhaul, and inspection services delivered through a global service network. The go-to-market is direct sales via company-owned offices — four domestic sales offices in Japan and wholly-owned subsidiaries in the USA (1987), China (2000), Vietnam (2015), Thailand (2017), South Korea (2018), and a Germany representative office (2024) — complemented by international distributors in Taiwan, Singapore, and India.

Ownership is wholly within the Ogawa family, with Hiroumi Ogawa currently serving as Chairman and President following generational succession from founder Ryohei Ogawa. The group employs approximately 650 people globally (355 in Japan, 295 overseas) and operates through twelve subsidiaries spanning manufacturing, engineering, facility management, and trading functions. No revenue, funding events, or external shareholders are disclosed in the source materials, and the company shows no public listing, acquisition activity, or non-family ownership participation.

Name

Sankyo Seisakusho Co

Legal name

株式会社三共製作所

Website

https://sankyo-seisakusho.co.jp

Company type

Private

Founded year

1938

Operating status

Operating

Headcount range

501–1,000 employees

Short description

Sankyo Seisakusho is a family-owned Japanese manufacturer of precision cam-based automation equipment — including indexing drives, CNC rotary tables, and press feeders — serving automotive, aerospace, medical, and machine-tool OEMs across eight countries via direct sales and wholly-owned subsidiaries.

Ownership category

akta.pro rank

Product category

Industrial Automation Equipment

NAICS

Machine Tool Manufacturing (333517), Cutting Tool and Machine Tool Accessory Manufacturing (333515), Speed Changer, Industrial High-Speed Drive, and Gear Manufacturing (333612)

SIC

Machine Tools, Metal Cutting Types (3541)

akta.pro primary industry

Motion & Machine Control (CNC, Robotics Controllers, Servo/Motion Controllers) (IMAGABAG)

akta.pro secondary industries

Motion Control Electronics & Controls (Controllers, Drivers, Feedback Interfaces) (IMAHAGAJ), Industrial Controllers & Control Systems (PLCs, PACs, CNC Controllers) (IMAHAHAH)

Keywords

• Cam-based automation
• Roller gear cam indexers
• Precision positioning drives
• CNC rotary tables
• Press material feeders

Headquarters

HQ city

Tokyo

HQ country

Japan

HQ region

Asia

Offices15 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Automation Equipment and Components: Sale of precision positioning devices, press peripheral equipment, welding positioners, and automated machinery. Products include RollerDrive series, SANDEX indexing drives, Variax coil feeders, and machine tool units. Revenue is generated through one-time hardware sales with potential for aftermarket services, parts, and repairs.
2. Aftermarket Services: Repair, maintenance, overhaul, and inspection services for sold equipment. The company operates service bases globally to support existing customer installations.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

Sankyo Seisakusho manufactures precision motion control and automation equipment based on its proprietary roller-gear cam mechanism. Its product portfolio includes zero-backlash positioning reducers (RollerDrive), fixed indexing drives (SANDEX), CNC rotary tables, Variax coil feeders for press machines, torque limiters, welding positioners, long-stroke linear drive units (LinerUnit), and Servo-dex motor core indexing systems. Products are sold directly to manufacturers in the automotive, aerospace, medical, food, and machine tool industries.

Product overview

Sankyo Seisakusho is a cam technology company specializing in precision motion control and automation equipment. The product portfolio centers on roller-gear cam mechanisms and includes: RollerDrive Series (zero-backlash reducers/positioners for free positioning), SANDEX Series (fixed indexing drives), CNC Rotary Tables (machine tool tables), Variax (press coil feeders), TorqueLimiters (overload protection), Welding Positioners, LinerUnit/LinerDrive (linear drives), Servo-dex (motor core indexing), SANDEX Feeders, and Machine Tool Units. Products serve automotive, aerospace, medical, food, and machine tool manufacturing industries worldwide.

Differentiator

Problem solved

Functional benefit

Brands

• SANDEX: Fixed positioning rotary and linear indexing drives and drives product line
• RollerDrive
• Variax
• Servo-dex
• TorqueLimiters
• LinerUnit
• Machine Tools

Products and services

• RollerDrive Series
• SANDEX Series Indexing Drives
• RollerDrive CNC Rotary Tables
• Variax Coil Feeders for Presses
• TorqueLimiters
• Welding Positioners
• LinerUnit / LinerDrive
• Servo-dex
• SANDEX Feeders
• Machine Tool Units
• Pallet Master SPM Series
• Roller Track LPC Series

Quantifiable outcome

• World's first roller gear cam-type indexing drive (1973)
• +4 more outcomes

Named customers2 records

Segments5 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

13 partnerships are on record, tiered minor, major and core.

• Germany Representative OfficeminorChannel Partner/ Reseller/ Distributor · 1 January 2024Representative office established in Germany in 2024 to explore European market opportunities.
• Sankyo Works (Thailand) Co., Ltd.majorChannel Partner/ Reseller/ Distributor · 1 January 2017Thai subsidiary established in 2017 for sales and service operations in Thailand and Southeast Asia. Located near Bangkok.
• Rodax Vietnam Co., Ltd.coreChannel Partner/ Reseller/ Distributor · 1 June 2015Established in June 2015 in Hung Yen Province, Vietnam. State-of-the-art factory went into production in 2016. Second Asian production base enables reinforced production and service system for Asian markets.
• Sankyo Korea Co., Ltd.coreChannel Partner/ Reseller/ Distributor · 1 January 2013Established as Korean sales base in 2013, incorporated in 2018, manufacturing began June 2019. Located in Suwon-si, Gyeonggi-do, Korea. Handles manufacturing, sales, and service for Sankyo products in Korea.
• Hangzhou Sankyo Machinery Co., Ltd.coreChannel Partner/ Reseller/ Distributor · 1 June 2000Established in Hangzhou, Zhejiang, China in June 2000. Development and manufacture of products for global markets with focus on high-speed materials feeding equipment for press machines. Achieves Japan-quality manufacturing through consistent production system.
• Sankyo America Inc.coreChannel Partner/ Reseller/ Distributor · 1 September 1987Wholly-owned subsidiary established in Sidney, Ohio, USA in September 1987. Manufactures precise positioning devices, high-speed material feeding equipment for press machines, and automated machines. Serves North America, Europe, and Latin America markets directly.
• Sankitai Co., Ltd. (Taiwan)minorChannel Partner/ Reseller/ DistributorInternational distributor based in New Taipei City, Taiwan. Distributes Sankyo products in Taiwan market.
• Sinew Enterprise Co., Ltd. (Taiwan)minorChannel Partner/ Reseller/ DistributorInternational distributor based in Taipei, Taiwan. Part of Sankyo's distributor network in Taiwan.
• Ueno (Thailand) Co., Ltd.minorChannel Partner/ Reseller/ DistributorInternational distributor based in Bangkok, Thailand. Distributes Sankyo products in Thailand market.
• Hikari Automation System Pte Ltd (Singapore)minorChannel Partner/ Reseller/ DistributorInternational distributor based in Singapore. Distributes Sankyo products in Singapore market.
• Visionpro Technologies (India)minorChannel Partner/ Reseller/ DistributorCNC Rotary Table Agent for India. Distributes Sankyo CNC rotary table products in Indian market.
• Galaxy Techniques (India)minorChannel Partner/ Reseller/ DistributorVariax Agent for India. Distributes Sankyo Variax coil feeder products in Indian market.
• Deceler Vibrotek Controls Pvt Ltd. (India)minorChannel Partner/ Reseller/ DistributorIndexer Agent for India. Distributes Sankyo indexer products in Indian market.

Scale indicators7 records

Recent moves16 records

Expansion highlights5 records

Broad incumbents

• Destaco: Global supplier of clamping, workholding, and automation components with cam-indexing table offerings. Comparable to Sankyo in industrial automation, particularly through Destaco's cam-driven indexing products serving automotive and manufacturing end markets.
• Harmonic Drive Systems: Japanese specialist in harmonic drive speed reducers and mechatronics products. Competes with Sankyo's precision reducer and motion control lines, particularly in robotics and semiconductor applications, but uses a different underlying gear technology.
• Nabtesco: Large Japanese motion control and component manufacturer with a broad portfolio including precision reduction gears, hydraulic equipment, and aircraft components. Overlaps with Sankyo in precision reducers and motion control but operates across much broader industrial categories.
• Sumitomo Heavy Industries (Drive Systems): Major Japanese industrial group with a motion control division (cyclo and helical reducers). Comparable to Sankyo's reducer/gearbox business but serves as a much larger conglomerate with broader industrial automation offerings.

Emerging players

• Camozzi Automation: Italian automation components manufacturer producing pneumatic systems, motion control, and mechatronics. Adjacent to Sankyo in factory automation but focuses on pneumatics; useful peer for understanding cross-technology motion control competition.

Direct peers

• Weiss Robotics: German maker of cam-indexing tables, rotary indexing tables, and precision motion components. Directly competes with Sankyo's SANDEX fixed indexing drives in European and global machine tool markets, with similar zero-backlash mechanical positioning technology.
• Taktomat: German manufacturer of cam-driven indexing tables and rotary indexing systems. Directly comparable to Sankyo's cam-based indexing drives, serving machine tool and automation customers in Europe with similar mechanical indexing technology.
• Kitagawa Iron Works: Established Japanese manufacturer of NC rotary tables, workholding, and machine tool components. Closely comparable to Sankyo's CNC rotary table and machine tool peripheral offerings, with overlapping end markets in automotive and general machining customers.
• Nikken Kosakusho Works: Japanese manufacturer of CNC rotary tables, indexing tables, and machine tool accessories. Most directly comparable to Sankyo's CNC rotary table line (RCD/RS/RT/RTB/RTD/RTA) given overlapping product categories, Japanese precision engineering DNA, and shared customer base of CNC machine tool builders.
• Tsudakoma: Japanese maker of NC rotary tables and indexing equipment for machine tools. Directly overlaps with Sankyo's CNC rotary table and indexing drive business, serving the same machine tool OEM and end-user channels with comparable zero-backlash positioning products.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks5 records

Key highlights6 records

Customer concentration

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 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 Sankyo Seisakusho Co