Ken Robotech Corporation
"Creating the World's Most Human-Friendly Worksite"
Kagawa maker of TOMOROBO collaborative rebar-tying robots that tie a joint in 2.7 s or less at 200 mm pitch, plus a rail-running material carrier.
Ken Robotech Corporation is a Japanese construction-technology company that develops labor-saving robots and products for reinforced-concrete work. It was founded on July 3, 2013 and is headquartered in Miki-cho, Kita-gun, Kagawa Prefecture, with a Tokyo office in Higashi-Ikebukuro, Toshima-ku. Its founder and CEO, Tatsuya Manabe, came to robotics from construction-site work, and the company describes its mission as creating the world's most human-friendly worksite. Capital is 50 million yen.
The core product line is TOMOROBO, a series of collaborative robots that work alongside rebar crews rather than replacing them.
- Rebar Tying TOMOROBO is a self-propelled robot that travels across a rebar mat and ties intersections using two commercially available handheld rebar tying tools (the company names the MAX RB-440T) mounted left and right on one-touch adapters. It detects intersections and adapts to pitch changes, height offsets and tilted bars, with a pitch error of plus or minus 20 mm. At a 200 mm pitch it needs 2.7 seconds or less per tie point. Crews can switch between full, staggered and skip-one tying with one switch, and the controller has no front or back orientation, so the robot can run one way or back and forth. The standard model handles bars of about 10 to 16 mm in diameter for building work.
- Large Diameter Tying TOMOROBO extends the same approach to civil engineering and infrastructure work, with bars of about 19 to 29 mm.
- Transport TOMOROBO is a 28 kg rail-running carrier. Two units working together move up to 500 kg at 350 mm/s on temporary rails across uneven ground and openings, climbing grades of up to 5%. Each unit measures 76 x 61 x 38 cm, fits in a kei car, runs about 5 hours or 6 km per charge, recharges in about 6 hours and is drizzle-resistant, with bumper, contact, tip-over and rail-end safety stops.
Supporting tools include the Tomosapo user program and a tying-operation simulator. Beyond robots, Ken Robotech sells the SOKUTETSU range of labor-saving rebar products (V-bar spacer, J-wire, Kachispe), the HATARAKU range of work-environment products (including the Masuraku mask spacer, Clejia and Go Anzen ni), construction DX support services and contract development. It co-developed a rebar tying assist device, an extension handle, with Shimizu Corporation, and its products are listed on the IPROS industrial catalogue.
Ken Robotech is venture-backed. In February 2025 it raised an additional 180 million yen to close a Series B round totaling 330 million yen, with investors including the Awagin Future Creation Fund, JR East Startup and bearing maker NSK, bringing total funding since founding to about 780 million yen. It has also set up a Singapore office, Ken Robotech Asia, through a startup support program.
Primary type & automation activities this supplier delivers:
Rebar Tying TOMOROBO
Self-propelled collaborative robot that ties 10-16 mm rebar intersections with two handheld tying tools, 2.7 s or less per tie at 200 mm pitch.
Large Diameter Tying TOMOROBO
Large-diameter version of the rebar tying robot for civil and infrastructure work, handling bars of about 19-29 mm.
Transport TOMOROBO
28 kg rail-running carrier; two units move up to 500 kg at 350 mm/s on temporary rails and run about 5 hours per charge.
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Contact Ken Robotech Corporation
WEBSITE
https://kenrobo-tech.com/PHONE
+81-87-898-0555HEADQUARTERS
Japan
Company Facts
Founded
2013
Primary Role
Manufacturer
Company Size
-
Primary Region
Asia-Pacific
Annual Sales
-
Funding Stage
Growth / Late-Stage VC
Funding Total
-
