Planetary Rotary Actuator

The Planetary Rotary Actuator is a highly integrated, servo-capable joint module for demanding automation and robotics applications. The combination of a precise planetary gearbox, compact frameless torque motor, cross roller bearing and integrated control electronics with feedback system results in a powerful complete solution with high power density, excellent positioning accuracy and maximum reliability.

The modular design reduces system complexity, simplifies integration and enables highly dynamic movements even under demanding load and environmental conditions. The Planetary Rotary Actuator has already been successfully used in various projects.

The WSP series is characterised by the following data:
 

Features

• Compact design
• High power density
• High precision & repeatability (gear backlash ≤ 12 arcmin, 21-bit dual magnetic encoder)
• High rigidity & load capacity
• Low back torque
• Maintenance-free design
• Hollow shaft design for internal cable routing
• Low-noise operation

Key technical data
(Depending on model, see technical specifications for details)

• Outer diameter: 56 – 140 mm
• Reduction ratio: 12 / 16 / 22 / 24 / 36
• Nominal torque: up to 120 Nm
• Peak torque: up to 360 Nm
• Supply voltage: 48 / 72 VDC
• Encoder: 21-bit dual magnetic encoder
• Communication: CAN FD (500 kbit/s – 5 Mbit/s)
• Protection class: IP44
• Operating temperature: −40 to +70 °C

Areas of application

• Humanoid robots (shoulder, hip, knee, elbow, wrist)
• Collaborative robots & lightweight robots
• Industrial automation & special-purpose machines
• Service and medical robotics
• Mobile robotics & assistance systems