LZ10028 Planetary Joint Module for Quadruped Robots

The core technology of the product lies in the harmonic integrated joint module, featuring a drive-control integrated design. The inner rotor structure enables hollow cabling, while diversified model options including 11, 14, 17, 20, 25, 32 and 40 series ensure flexible applications. With a compact and miniaturized profile and low power consumption, it adopts a pin-type brake mechanism that triggers mechanical locking instantly upon power loss, with an action time of less than 10ms.

The dual steel wheel design, integrating cross-roller bearings with steel wheels, reduces axial space occupation. By meshing two steel wheels with one flexspline, it mitigates stress from flexspline deformation, achieving smooth operation, high efficiency and positioning accuracy up to 20 arcseconds.

High Torque Density, Suitable for Medium- And Large-Load Applications

Strong torque output: Rated torque of 67.5 Nm, with peak torque reaching up to 200 Nm, easily supporting medium- and high-load applications such as exoskeleton thigh joints, collaborative robots, and industrial robotic arms, thus meeting the demands of high-torque actuation.

High-power design: Rated power of 975W, paired with DC48V power supply, balancing torque and dynamic response, supporting rapid start-stop and speed adjustment of joints for enhanced motion performance.

Hollow Shaft Design, Maximum Integration

Hollow shaft structure: Allows cables and pipelines to pass directly through the joint, perfectly accommodating the internal wiring requirements of robots and exoskeletons. This significantly simplifies equipment wiring design, reduces interference from external cables, and enhances overall integration and aesthetic appeal.

Compact and lightweight: With an outer diameter of φ100mm and a height of 68mm, it weighs only 1550g. While delivering medium to high torque output, it maintains a lightweight design, reducing the ratio of joint load to self-weight and enhancing the equipment's motion flexibility.

High Precision + Low Backlash, Accurate and Reliable Positioning

Low-backlash transmission: The backlash at the output end is ≤15 arcmin. Combined with a dual-magnetic encoder (dual-encoder) solution, this achieves closed-loop control of the joint, delivering high positioning accuracy and eliminating hysteresis and backlash. It is ideal for applications that demand precise trajectory control and repeatable positioning.

Planetary transmission design: Employs a planetary gearbox structure with a reduction ratio of 28. It features high transmission efficiency, smooth operation, and strong shock resistance, enabling it to handle sudden load changes in the joints.

Industrial-grade Reliability, Adaptability to Complex Environments

Wide temperature range and robust protection: Operating temperature range from -20°Cto 80°C, with an IP54 protection rating that effectively resists dust and splash water. Ideal for complex application scenarios such as industrial sites, outdoor environments, and medical equipment, delivering maximum stability.

Long-lasting, stable operation: Featuring Class B insulation and FOC vector control, the unit operates with noise levels ≤68 dB (measured at 1 meter). It can run stably for extended periods under natural cooling, reducing maintenance costs.

Multiple Communication Protocols, Strong Compatibility

Dual Communication Support: Supports both CANFD and EtherCAT communication protocols, enabling direct integration with mainstream robot controllers. Compatible with multi-brand host computer systems, offering strong adaptability and reducing customer system integration costs. High Dynamic Response: Rated speed of 110 rpm, peak speed of 143 rpm; precise speed control meets the demands of rapid joint movements and accurate speed regulation.

Scalable Brake Version With Enhanced Safety Redundancy

Optional brake version (LZ10028CHB): The brake torque is 5.5 Nm, enabling rapid joint locking in scenarios such as power failure or system malfunction, thereby enhancing equipment operational safety. This version is particularly well-suited for applications with stringent safety requirements, such as exoskeletons and lifting mechanisms.