Harmonic Drive Systems

• Production Milestone

  1 source-backed production milestone - 2021-10-13 - Harmonic Drive Systems announces Ariake Plant capacity expansion for strain-wave gears - source posture: Third Party Reported

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• Production Milestone

  1 source-backed production milestone - 2016-08-29 - Harmonic Drive Systems invests ¥1.5B to expand HarmonicDrive production capacity - source posture: Third Party Reported

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Exact-product configurations are shown without inferring supply, purchase, customer status, standard fit, deployment or partnership.

• Harmonic Drive Systems gearboxes with Sony AI Ace autonomous table-tennis system

  Research Experiment - Embedded - Sony AI’s Ace research robot used Harmonic Drive Systems gearboxes in its upgraded six-axis arm.

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Supply chain relationships

• Harmonic AD, Inc.

  Inbound - Manufacturing - Harmonic AD manufactures precision planetary reducers sold by HDSI

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• Ome Iron Casting Co., Ltd.

  Inbound - materials and robotics supply chain - Ome Iron Casting supplies cast-iron circular-spline parts for HDSI HarmonicDrive gears

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• Harmonic Precision Inc.

  Inbound - Mechanical Components - Harmonic Precision supplies cross roller bearings for HDSI strain wave gears

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• Harmonic Winbel Inc.

  Inbound - Manufacturing - Harmonic Winbel manufactures servo motors, actuators and drivers supplied to HDSI

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• NASA

  Outbound - actuation and motion control - Five Harmonic Drive reducers position instruments on NASA Perseverance's robotic arm

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• Mitsubishi Electric

  Outbound - materials and robotics supply chain - Harmonic Drive Systems 4B No.2 grease is factory-filled in Mitsubishi RH-12FRH/20FRH J1/J2 reduction gears

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• Mitsubishi Electric

  Outbound - materials and robotics supply chain - Harmonic Drive Systems 4B No.2 grease is factory-filled in Mitsubishi RV-13FR/20FR wrist reduction gears

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• Mitsubishi Electric

  Outbound - materials and robotics supply chain - Harmonic Drive Systems 4B No.2 grease is factory-filled in Mitsubishi RV-4FR/7FR wrist reduction gears

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• Honda Robotics

  Outbound - actuation and motion control - Harmonic Drive reducers are used in the arms and legs of Honda's humanoid robot

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• 6324 - Tokyo Stock Exchange - JPY
• 6324.T - TSE - JPY

• Akira Maruyama - President and Representative Director - Current executive leader for a core motion-component supplier in the robotics value chain.

Events

• 2026-08-07 - Market Signal - Harmonic Drive Systems Q1 orders rise 55.7% to JPY 24.13 billion

  Revenue increased 23.6% to JPY 16.68 billion, while operating profit rose to JPY 1.84 billion from JPY 122 million. Industrial-robot sales increased as growth in Japan and Europe more than offset lower sales in China. The company received a large North American surgical-robot order and reported continued demand from AI-related data-centre and advanced-semiconductor investment.

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• 2026-02-27 - Market Signal - Harmonic Drive Systems transfers listing to Tokyo Stock Exchange Prime Market

  Harmonic Drive Systems' listing was reclassified from the Tokyo Stock Exchange Standard Market to the Prime Market. The reclassification gives the public reducer supplier higher-profile public-market positioning in Japan. Harmonic Drive Systems is a listed supplier in the robotics motion-chain stack.

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• 2026-02-12 - Product Launch - Harmonic Drive Systems releases FPA Series AC servo actuator

  Harmonic Drive Systems released the FPA Series AC servo actuator. The product combines the HarmonicPlanetary precision planetary gear reducer with a dedicated AC servo motor.

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• 2025-11-19 - Market Signal - Harmonic Drive Systems points to actuator product launch strategy for AI robot demand

  Harmonic Drive Systems described a strategy to bring anticipatory actuator products to market with AI robots in mind. The company also discussed local procurement and assembly work in China to improve cost competitiveness for middle-end reducer demand.

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• 2025-05-20 - Production Milestone - Harmonic Winbel takes over Harmonic Drive’s mechatronics production business

  The group’s mechatronics products include servo motors, actuators and drivers. Parallel group initiatives expanded local assembly in China and introduced a manufacturing-execution system at the Ariake plant.

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• 2025-05-20 - Market Signal - Harmonic Drive Systems reports higher robot-manufacturer demand in China and Europe

  Harmonic Drive Systems reported higher demand from local robot manufacturers in China and European-based robot manufacturers. The company said both sales and profits increased in China, while European results were mixed because macroeconomic conditions affected other project types. This is a public demand-cycle signal for robotics reducer exposure across China and Europe.

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• 2024-11-28 - Market Signal - Harmonic Drive Systems reports China robot-manufacturer demand recovery

  Harmonic Drive Systems reported increased demand from local robot manufacturers in China during the first half of fiscal 2024. The company said capacity utilization increased with year-on-year production volume recovery, though it had not yet reached break-even. The signal is relevant as a robot-demand recovery marker for the reducer supply chain after the prior downcycle.

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• 2022-06-01 - Acquisition - Harmonic Drive Systems makes SAMICK ADM a 51%-owned reducer subsidiary

  Harmonic Drive Systems made SAMICK ADM a 51%-owned subsidiary through Harmonic AD. SAMICK ADM manufactures precision planetary speed reducers in Daegu, South Korea. The move expanded Harmonic Drive Systems' East Asian reducer supply base for precision motion applications.

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• 2021-10-13 - Production Milestone - Harmonic Drive Systems announces Ariake Plant capacity expansion for strain-wave gears

  Harmonic Drive Systems announced a capital investment to increase HarmonicDrive strain-wave gearing production capacity at its Ariake Plant in Nagano Prefecture. The project was designed to raise domestic production capacity from 150,000 units per month to 220,000 units per month by August 2022. The company tied the expansion to continued demand from industrial robots and semiconductor manufacturing equipment, plus growing demand from industrial machinery and automotive applications.

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• 2016-08-29 - Production Milestone - Harmonic Drive Systems invests ¥1.5B to expand HarmonicDrive production capacity

  Harmonic Drive Systems announced a production-capacity investment for HarmonicDrive precision reducers. The company said demand was increasing rapidly, mainly for industrial robots and semiconductor manufacturing equipment. The investment was intended to improve stable supply, quality, delivery time and production efficiency.

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Relationships

• Harmonic AD, Inc.

  Wholly Owned Planetary Reducer Subsidiary - Harmonic AD is a wholly owned Harmonic Drive Systems subsidiary that manufactures precision planetary reducers.

• Harmonic Winbel Inc.

  Wholly Owned Subsidiary - Harmonic Winbel Inc. is a wholly owned subsidiary of Harmonic Drive Systems Inc..

Comparable profiles

• Huayi Tech

  stack adjacency - Reducer Gear Supplier

Context tags

• Precision reducer supplier - Peer Group
• Zero-backlash precision motion - Capability
• Reducer gear supplier - Stack Layer
• Robotics hardware supply chain - Customer Environment
• Precision strain wave gear supplier - Peer Group