RYOKI GLOBAL TOOLING Co., Ltd.
A large-scale precision-machining manufacturer producing aircraft components, aerospace tooling, contract measurement and tooling MRO services, and industrial equipment parts. It manufactures fusion-device components in collaboration with Helical Fusion.
Official company website ↗Read the Japanese originalCompany profile
- Official name
- Ryoki Global Tooling Co., Ltd.
- English name
- RYOKI GLOBAL TOOLING Co., Ltd.
- Location
- Ichinomiya, Aichi, Japan
- Established
- 1967
- Industry
- Precision machining・Aerospace components
- Technology field
- Large-scale precision machining・Coil cases・Blanket-component prototyping
- Type of involvement
- Association membership・Intention to enter the sector・Technology development
Role in the fusion industry
On March 17, 2026, Helical Fusion announced completion, through its collaboration with Ryoki, of ten coil-case parts and one breeding-blanket component prototype for Helix HARUKA. This is component manufacture, distinct from operation of the complete device, electricity generation and tritium-breeding validation.
Key products and technologies
- Coil-case components for Helix HARUKA
- Breeding-blanket component prototype
Disclosed involvement and track record
Listed under the name Ryoki Die Industry Co., Ltd. as a supporting member in the J-Fusion membership directory as of September 17, 2026.
Association membership does not establish a record of supplying or delivering equipment to a specific device.
J-Fusion membership directory ↗The official concept statement describes expansion into fusion. This statement of intent is distinguished from the separately verified manufacture of Helix HARUKA components.
Concept statement ↗On March 17, 2026, Helical Fusion announced that its collaboration with Ryoki had completed ten coil-case parts and one breeding-blanket component prototype for Helix HARUKA. This is distinct from device operation, electricity generation and tritium-breeding validation.
Helical Fusion: completion of key Helix HARUKA components ↗Related projects
- Helix HARUKA — Manufacture of 10 coil-case parts and 1 breeding-blanket component prototype (Helical Fusion announcement, March 17, 2026). Not a demonstration of complete-device operation or electricity generation.
- J-Fusion membership directory(Verified 2026-10-12）
- Ryoki Die Industry: official company information(Verified 2026-10-27）
- Concept statement(Verified 2026-10-12）
- Official website(Verified 2026-10-12）
- Company name change on October 1, 2026(Verified 2026-10-12）
- Helical Fusion: completion of key Helix HARUKA components(Verified 2026-10-27）
- Ryoki: expansion into fusion and company name change(Verified 2026-10-27）
Last verified: 2026/10/27 19:23:00 (Japan time)
Business overview
RYOKI GLOBAL TOOLING Co., Ltd. manufactures aircraft components, aerospace jigs and tooling, and industrial-equipment components in Ichinomiya, Aichi, Japan. Formerly Ryoki Die Industry Co., Ltd., it was established in 1967 and adopted its current name in 2026, according to its official history. This is distinct from its predecessor’s founding in 1954.
Company facts
Established in June 1967 and headquartered in Ichinomiya, Aichi, Ryoki was formerly Ryoki Die Industry. It brings aerospace precision machining to fusion-device components.
- Current name: RYOKI GLOBAL TOOLING Co., Ltd.
- Former name: Ryoki Die Industry Co., Ltd.
- Established: June 1967
- Headquarters: Ichinomiya, Aichi, Japan
- Representative: 原 康裕
- Main businesses: Aircraft parts, aerospace jigs and tooling, contract measurement and tooling MRO, industrial-equipment parts
- Specific fusion role: Manufacturing structural and blanket components for Helix HARUKA
MRO means maintenance, repair and overhaul. The company’s general business lines are distinguished here from its verified role in a particular fusion device.
What does it manufacture for fusion?
On March 17, 2026, Helical Fusion announced that its collaboration with Ryoki had completed ten coil-case parts and one breeding-blanket component prototype for the Helix HARUKA development device.
The coil case is a structural component supporting a helical high-temperature superconducting magnet. The announcement describes joining the ten parts to form its supporting structure. This is different from manufacturing superconducting conductor or demonstrating operation of the complete magnet.
The blanket component is an initial prototype intended for combination with other parts. Completing its machining does not demonstrate a complete blanket or tritium-breeding performance.
Large-scale precision machining connects design to hardware
Aerospace jigs and tooling hold workpieces in the correct position and assist assembly and measurement. Ryoki is extending this manufacturing experience into fusion. Its official history records investment in large simultaneous five-axis machining equipment and stronger measurement and quality-assurance capabilities.
Fusion devices require complex designed shapes to become manufactured parts that can be assembled. Ryoki’s role is in the supply chain producing large structural components, rather than responsibility for the entire reactor’s physics design.
Completed components versus future demonstrations
The achievement verified in the March 2026 announcement is manufacture of the components described above. At that point, the coil-case parts were to be transported to Helical Fusion’s dedicated space at the National Institute for Fusion Science for assembly. Component fabrication, device assembly, energization and operation, and electricity generation are separate stages.
It is therefore insufficient to describe Ryoki as merely intending to enter fusion. It would also be incorrect to say it has achieved commercial fusion power. Understanding the company means distinguishing the parts it has manufactured from subsequent device demonstrations.
Related devices and technologies
Helix HARUKA explains the device’s purpose and development stage. Blankets and heat recovery introduces the role of in-vessel components.
Sources
- Ryoki: company profile and history (checked October 27, 2026)
- Ryoki: expansion into fusion and change of name (checked October 27, 2026)
- Helical Fusion announcement: completion of Helix HARUKA components (announced March 17, 2026)
Companies DATA
- Country
- Japan