NSK
About
About NSK
NSK engineers bearings, ball screws, linear guides and precision machinery products for rotary and linear motion. Robot applications use these components in articulated joints, linear axes, mobile platforms and factory equipment, with lubrication, sealing, preload and material choices matched to load, accuracy, speed and service-life requirements. Its current robotics portfolio also includes compact actuators, torque sensing, adaptive gripping and active-caster concepts.
A Robotics Business Department was established in March 2026 to coordinate product and market development across these technologies. NSK and Delta Electronics signed a memorandum of understanding in May to explore robotic actuators combining NSK mechanical components with Delta motors, drives and control technology. The agreement is a development collaboration, so the profile does not present jointly developed actuators as released products. Existing demonstrations such as PalGo and CROXY remain distinct from standard catalogue components.
Supply
Supply chain relationships
- Shandong Jindi
Inbound - Mechanical - Shandong Jindi supplies bearing cages for NSK's bearing production
Source - Delta Electronics, Inc.
Inbound - Motion Control - Delta motors and drivers are integrated into NSK’s rotary and linear actuator development units
Source - FarmDroid
Outbound - robotic motion components - NSK supplied sealed 6004-series ball bearings with ES1 stainless-steel rings for FarmDroid's FD20 weeding robot
Source
Financials
- 6471.T - TSE - JPY
Timeline
Events
- 2026-09-25 - Product Launch - RT discloses NSK-backed inspection quadruped prototype
The prototype is about 20 kg, measures roughly 900 × 400 × 500 mm while standing, and can carry up to 7 kg of equipment. The planned demonstration includes stair and slope traversal, autonomous patrol, and meter-reading workflows. RT is targeting a production-model launch around spring 2028; the current machine remains at prototype and validation stage.
Source - 2026-08-20 - Partnership - ATOM Humanoid and NSK sign humanoid-robotics MOU
NSK actuators will be installed on ATOM Humanoid robots for joint evaluation, with results intended to improve performance and address mass-production challenges. The companies will collect physical-AI data using ATOM Humanoid robots in NSK manufacturing environments to improve ATOM's foundation model. ATOM Humanoid says it develops both a bipedal, dual-arm robot and its physical-AI foundation model in-house.
Source - 2026-05-08 - Partnership - NSK and Delta Electronics sign next-generation robotics MOU
The companies will integrate electronic, control and mechanical technologies around rotary and linear robot actuators. They agreed to cooperate on research, integrated design, system validation and prototypes. Future work will assess commercialization, global market deployment and sales strategies under separate agreements.
Source - 2025-11-06 - Product Launch - NSK develops rotary and linear actuators for robotics applications
NSK said the actuators combine bearing, linear-motion and mechatronics technologies. The release describes compact, lightweight, high-backdrivability rotary and linear actuator designs. NSK also referenced collaboration with Delta Electronics around built-in motors and drivers.
Source - 2025-10-30 - Partnership - NSK takes strategic stake and partners with RT Corporation
The transaction used a third-party allotment of new shares and left NSK with more than one-third of RT voting rights. The companies agreed to pursue domestic quadruped robots and humanoid deployment in manufacturing. Their programme combines RT physical-AI and robotics capabilities with NSK motion, bearing and mechatronics technology.
Source - 2023-11-29 - Demonstration - NSK exhibits reconfigurable robotic-hand prototype at iREX 2023
Individual finger modules could be rearranged to build the minimum hand configuration needed for a use case. German Aerospace Center wire-drive technology enabled smooth motion and gentle gripping of varied objects. NSK combined a detachable magnetic mechanism with a digital-twin algorithm for finger-placement optimization.
Source - 2015-04-16 - Demonstration - NSK completes real-world LIGHBOT guide-robot demonstrations
The autonomous guide robot operated under conditions close to actual use with visually impaired participants and rehabilitation staff. NSK validated indoor navigation, obstacle avoidance, voice guidance and safer user-controlled speed and stopping. The revised robot added multi-floor localization, elevator use and longer battery endurance ahead of planned practical application.
Source
Relations
Relationships
- ATOM Humanoid
Humanoid Actuator And Physical AI Partner - ATOM Humanoid and NSK signed an MOU to evaluate NSK actuators on ATOM robots and collect manufacturing-floor data for physical-AI development.
- RT Corporation
Inspection Quadruped Development - RT and NSK are jointly developing a Japanese-made quadruped for industrial inspection; NSK contributes component technology.
- Delta Electronics, Inc.
Next Generation Robotics Mou Partner - NSK and Delta Electronics agreed to integrate, prototype and commercialize next-generation robot actuator technologies.
- RT Corporation
Strategic Robotics Partner And Investee - NSK acquired more than one-third of RT Corporation voting rights and signed a robotics business partnership.
- German Aerospace Center
Robotic Hand Development Partner - NSK and the German Aerospace Center developed the reconfigurable robotic-hand prototype exhibited at iREX 2023.
- Kanagawa Rehabilitation Center
Lighbot Field Demonstration Partner - NSK and the Kanagawa Rehabilitation Center ran six months of near-real-use LIGHBOT demonstrations.
Context
Comparable profiles
- Ewellix
comparable profile - Linear Actuation Supplier
- Festo
comparable profile - Linear Actuation Supplier
- Zhejiang Laifual Drive
stack adjacency - Motion Component Supplier
- XCC Group
stack adjacency - Motion Component Supplier
- Zhejiang Zhaofeng Mechanical and Electronic
stack adjacency - Motion Component Supplier
- igus
stack adjacency - Motion Component Supplier
- AILOS Robotics
stack adjacency - Motion Component Supplier
- Meili Technology
stack adjacency - Motion Component Supplier
- Henggong Precision
stack adjacency - Motion Component Supplier
- Leaderdrive
stack adjacency - Motion Component Supplier
- Nabtesco
stack adjacency - Motion Component Supplier
- Elmo Motion Control
stack adjacency - Motion Component Supplier
Context tags
- Robotics motion-component supply layer - Stack Layer - NSK supplies bearings, ball screws and linear guides for precision motion.
- Linear actuation supplier - Peer Group - NSK ball screws and linear guides support robot-adjacent linear motion.
- Manufacturing automation supply stack - Stack Layer - NSK supplies motion components used in industrial automation.