NSK, Ltd.
Corporate Communications Department
NSK to Exhibit at iREX 2025
NSK Ltd. (NSK; Headquarters: Tokyo, Japan; President and CEO: Akitoshi Ichii) announced that it will exhibit at the International Robot Exhibition 2025 (iREX 2025), one of the largest robot trade shows in the world, at Tokyo Big Sight (Koto City, Tokyo) from December 3 to December 6, 2025.
Image of NSK booth
■ NSK Exhibit Concept
Under the theme “'Contributing to a sustainable society through kindness for human and the environment”, NSK will present the future of robotic technology that evolves with humans, using NSK’s unique precision motion and control technologies.
■ Main Exhibits by NSK
1, Rotary/Linear Actuators and High-Functionality Components
NSK will exhibit various cutting-edge components, including newly developed rotary/linear actuators applicable to humanoid robots, the NSK line-up of thin-section ball bearings contributing to higher performance and smaller/lighter designs of robots, and newly developed components such as a compact bilateral gear unit as a reducer for robot tactile transmission devices, locking clutches, and magnetostrictive torque sensors.
The newly developed rotary actuator (left) and linear actuator (right) are both being exhibited for the first time at a trade show
thin-section ball bearings
Newly developed Compact Bilateral Gear Unit
2. Active Caster PalGoTM High-Capacity Type and Active Caster PalGoTM Low-Floor Type
The Active Caster is a drive unit capable of seamless and smooth movement in all directions thanks to NSK’s unique mechanism. Its free, all-directional movement — regardless of the floor surface, including steps, carpets, and unevenness — fosters harmony between humans and robots. At this year’s iREX, NSK will exhibit the Active Caster PalGo™ High-Capacity Type, jointly developed by Man-Machine Synergy Effectors Inc. and NSK, and the Active Caster PalGo™ Low-Floor Type, developed by NSK.1 The High-Capacity Type enables the transport of heavy objects exceeding 1 ton, while the Low-Floor Type features a low-floor design (unit height of 140 mm), making for space-saving designs.
Active Caster PalGo™ High-Capacity Type: First-time being exhibited at a trade show.
(Example Specifications: Wheel diameter 250 mm, Vertical load capacity 1,100 kgf, Max. driving torque 130 N・m)*2
1: At the iREX venue, Man-Machine Synergy Effectors Inc., the joint developer of the Active Caster PalGoTM High-Capacity Type, will have a booth in a neighboring section. As a cross-booth collaboration, a talk session and guided tour are scheduled for December 3 (Wednesday) and 6 (Saturday).
Active Caster PalGoTM Low-Floor Type
(Example Specifications: Wheel diameter 75 mm, Vertical load capacity 100 kgf, Max driving torque 7.5 N・m).2
2: Specifications and appearance are subject to change without notice.
3. Service Robots
Two service robots will navigate an obstacle course within the booth, simulating a real operating environment
・Linkage-Suspension Equipped Robot (Outdoor Security Robot)
This security robot is equipped with a newly developed pantograph-shaped link-type suspension unit, achieving high all-terrain mobility outdoors. Since 2024, it has been undergoing field testing at Ritsumeikan University under The Ritsumeikan Trust (Headquarters: Kyoto; Representative: Yoshio Nakatani, President).
Linkage-Suspension Equipped Robot (Outdoor Security Robot): First-time being exhibited at a trade show.
・NSK Autonomous Cargo Robot
A robot equipped with a powerful drive system that can handle gentle slopes and steps in existing buildings, transporting luggage through smooth and safe autonomous travel. Development began in 2023. Once functional verification has finished, field testing will follow. This will be its first exhibition at a trade show.
■Exhibition Overview
Exhibition name | International Robot Exhibition 2025 (iREX 2025) |
Event period | December 3 to 6, 2025 10 AM to 5 PM |
Venue | Tokyo Big Sight (3-11-1 Ariake, Koto-ku, Tokyo) |
NSK booth | E7-62 (East Hall 7) |
Official website |
■About NSK
NSK produced the first bearings in Japan in 1916 and over the past 100 years, it has supported the development of industries worldwide by creating various innovative products and technologies in bearings, automotive parts, and precision machinery. Since the early 1960s, the company has expanded overseas and now has operations in about 30 countries. It ranks third in the world in the field of bearings and leads the world in ball screws, electric power steering, and other products.