THK Co., Ltd. · research humanoid
FRED
HR-S01
A 120 cm, 37 kg research humanoid from linear-motion parts maker THK, built for fast, impact-tolerant and precise motion (FRED stands for Flexible Robust Engineering Design), with 6 joints per leg and 4 per arm. THK's article does not describe a head; it was shown running at the Expo 2025 Osaka 'Future Creation Robot Week' in July 2025.
- Price
- —Not published
- Height
- 120 cmTaller than 12%
- Weight
- 37.3 kgHeavier than 22%
- Payload
- —Not published
- Speed
- 13.8 km/hFaster than 98%
- Battery
- —Not published
Not sure this is the one? Find the best robot for your job Starts with: research and teaching. Five more quick questions.
Why it matters
THK says it ran at 13.8 km/h (3.8 m/s) in a May 2025 test and bills it as faster than any other robot.
Real-world use
None; THK frames it as a step toward general-purpose humanoids and a showcase for its components.
Timeline
- Released
- Not yet
How it stacks up
Against other humanoids that publish the figure. Pick a measure.
FRED (HR-S01) is taller than 12% of the 305 other humanoids that publish a height. Bars show the 7 closest in date.
FRED (HR-S01) is heavier than 22% of the 277 other humanoids that publish a weight. Bars show the 7 closest in date.
FRED (HR-S01) is faster than 98% of the 122 other humanoids that publish a speed. Bars show the 7 closest in date.
FRED (HR-S01) has more joints than 9% of the 236 other humanoids that publish a joints. Bars show the 7 closest in date.
Not published by the maker: payload, battery, price.
What it has been shown doing
1 of 14 skills we track, each from a public video or report. Demos can be staged or remote-controlled; we say so when the source does.
- RunTHK shows FRED running at 13.8 km/h (3.8 m/s); ran at Expo 2025 Osaka · Jul 2025 · thk.com
Not shown yet:SortAssembleFoldKitchenToolsFineStairsTerrainGet upJumpCarryOn siteAutonomous
Public attention
A hidden gem: a recent robot with full published specs that gets little attention so far.
- No Wikipedia article of its own yet
- 1 news story from reputable press listed on this page
Measures how much people read and write about a robot, not how good it is. Measured 2026-10-14; same method for every robot. How it is measured
What’s inside
The parts the company has talked about publicly.
- Hands
- unknown
- Movement
- Walks on legs · 20 joints
- Actuators & motors
- THK RA-C80-04 rotary actuators: cycloidal gear with an outer-rotor motor and forced-air cooling; 160 N·m peak torque, 100 rpm, 960 W peak, 85 mm diameter, 960 g. 20 DoF (6 per leg, 4 per arm).
- Compute
- FPGA-based hardware controller for hard real-time control at a 1 ms cycle.
- Materials & build
- Legs use linkage mechanisms that mimic biarticular muscles to absorb running impacts; leg length 700 mm.
- Other details
- 1,200 mm tall, 37.3 kg. Reached 13.8 km/h (3.8 m/s) in a May 2025 running test. Shown at Expo 2025 Osaka's Future Creation Robot Week, 13-19 July 2025.
Named suppliers:THKmimic robotics
From the maker
FRED (HR-S01) is the only humanoid from THK in the atlas.
Watch FRED (HR-S01)
Made, sold and where
Unit counts are usually company figures; analysts often disagree.
- Price
- Not published
- How to get one
- No official buying page found
- Built
- Research prototype.
- Sold or delivered
- Not sold.
- Where it is sold or used
- Japan (THK)
- Customers and pilots
- None; THK frames it as a step toward general-purpose humanoids and a showcase for its components.
News
The latest 1, newest first. Summaries are ours; tap through for the original.
- THK introduces running humanoid FRED
THK described FRED's cycloidal actuators, FPGA control and 3.8 m/s running test ahead of Expo 2025 Osaka.
THK
Side by side with its peers
Picked by the same rules for every humanoid: another maker’s robot that moves the same way, is at the same stage and does at least one of the same main jobs, first shown within two years. Closer size and price rank higher. How we choose
| Measure | FRED (HR-S01)THK |  AGILOpedUniversity of Bonn, Autonomous Intelligent Systems groupSame job: research · Both walk · Both research platforms · Similar size |  iRonCub3Istituto Italiano di Tecnologia (IIT), AMI Lab (Daniele Pucci)Same job: research · Both walk · Both research platforms |  Lingxi X1AgiBot (Zhiyuan Robotics)Same job: research · Both walk · Both research platforms |
|---|---|---|---|---|
| First shown | 2025-07-02 | 2025-09-11 | 2025-06 | 2024 |
| Status | Research | Research | Research | Research |
| Height | 120 cm | 110 cm | — | — |
| Weight | 37.3 kg | 14.5 kg | 70 kg | — |
| Joints | 20 | 10 | — | — |
| Speed | 13.8 km/h | — | — | — |
| Payload | — | — | — | — |
| Battery | — | 2.5 h | — | — |
| Price | — | $6,380 | — | — |
Sources
Figures come from the maker. Every link below backs something on this page.
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