Proxi-Ring 240W


  • Resonant wireless slip ring
  • Circuits completely friction free
  • Fast and accurate response to load variations with 1% accuracy
  • Power channels: maximum output current 10A (total across all channels) at 24VDC
  • Communication channels: fully integrated 250kbps wireless CAN-Bus


The Proxi-Ring™ is a standalone electrical device that enables resonant transfer of power and data across an electrical rotary joint referred to as a slip ring, electric swivel, rotary electrical interface, commutator or a collector.

The Proxi-Ring™ is a next generation solution to replace existing mechanical slip rings. It provides a reliable and maintenance free alternative and does not require friction based metal and/or carbon brush contacts to enable power and data transfer.

Input power is transferred inductively. A standard 24V power supply can be used to power the PR240W power transmitter. Up to 10A peak can be drawn from the PR240W power receiver. The output voltage is held within a tight 1% tolerance.

The Proxi-Ring is available as a plug and play modular system which can be used to upgrade slip rings in new or existing equipment.


  • Elimination of friction or heating between rotating and stationary circuit contacts
  • Cost effective maintenance free alternative to traditional slip rings
  • Unlimited continuous RPM
  • Highly corrosion and water proof – immersion rating of IP68
  • Plug and play modular system compatible with existing power supplies and CAN bus communication

Typical Applications

  • Hydraulic wind turbine pitch control systems
  • Hydraulic control valves and actuators
  • Forestry & construction machinery
  • Robot end effectors
  • Medical equipment
  • Revolving doors
  • Process automation equipment
  • Night navigation systems


Electrical Specifications

Voltage 24VDC
Number of power circuits Customizable, up to a total of 10A across all channels
Output Curent 6.5A continuous, 10A Peak
Power transfer efficiency 84%

Environmental Specifications

Temperature -40°F to +140°F -40°C to +60°C
IP Protection Class 67
Operating shock 500 m/s2
Vibration 14.9 Grms

Mechanical Specifications

Operating speed 100RPM
Lead length 1.5m (STx/SRx)
Weight 5kg
Transmission Distance (z-axis) 0 – 6mm (for max power)
Housing Aluminum with acetal cap

Data Communications

Protocol CAN Bus
Data rate / No. of data circuits 250kpbs (customizable up to a total of 250kbps across all channels)


Dimensions in millimeters [inches] unless otherwise specified

PR240 mech