Harmonic Drive Launches LPA 20 Integrated Servo Actuator for Surgical Robotics
Harmonic Drive has introduced the LPA 20 integrated servo actuator, a compact motion control component designed to meet the stringent demands of surgical robotics. The new actuator strengthens the company’s position as a leading supplier to medical device original equipment manufacturers (OEMs), offering precision, reliability, and space-saving design.
Addressing OEM Challenges
Medical device OEMs face several hurdles when sourcing motion control components for surgical robots, including the need for extreme precision with minimal backlash, tight space constraints, and strict compliance requirements. Harmonic Drive’s decades of experience in precision motion control, combined with in-house design and manufacturing, provide the engineering support and customization capabilities that help OEMs overcome these obstacles.
The company’s vertical integration ensures consistent quality control and product reliability, enabling tailored solutions that meet specific OEM specifications. This technical depth differentiates Harmonic Drive from less experienced suppliers.
Key Features of the LPA 20 Actuator
The LPA 20 integrates Harmonic Drive gearing, a brushless servo motor, brake, dual absolute encoders, and an integrated servo drive into a single package weighing approximately 1.4 kg. It is available in gear ratios of 51:1, 81:1, and 101:1, with continuous torque from 6.5 Nm to 16.9 Nm and peak torque up to 57 Nm.
Critical attributes for surgical robotics include:
- Zero backlash: Harmonic Drive gearing ensures accurate positioning for delicate procedures.
- Compact, high-torque-density design: Suits space-constrained robotic joints without sacrificing performance.
- Reliability and compliance: Dual absolute encoders and sealed connectors meet demanding medical environments.
- Simplified integration: Plug-and-play design with EtherCAT and other communication options reduces wiring and assembly time.
- Customization: Engineering support allows adaptation to specific OEM requirements.
The actuator’s high torque-to-weight ratio and integrated design make it ideal for collaborative robots and surgical automation platforms.
About Harmonic Drive
Harmonic Drive specializes in precision motion control for medical devices, robotics, and industrial automation. The company designs and manufactures Harmonic drives, rotary actuators, and strain wave gears entirely in-house, ensuring superior quality control and product consistency. With decades of experience, Harmonic Drive offers customized solutions supported by dedicated engineering assistance throughout the development cycle.
The source for this article is https://www.roboticstomorrow.com/news/2026/07/06/harmonic-drive-advances-surgical-robotics-supply-with-innovative-lpa-20-compact-actuator-control-component/26804/.