Meridian Laboratory - ROTOCON Brushless Slip Rings often outlast conventional brushed slip rings between 5 & 25x without the need for maintenance, adjustment, or downtime. . . https://www.meridianlab.com/products/rotocon-m-multi-channel-end-shaft-slip ...
![Electric rotary joint technology for small wind turbines: Slip ring range offers alternative design for negligible brush wear, lower maintenance and longer life - Engineering Update Electric rotary joint technology for small wind turbines: Slip ring range offers alternative design for negligible brush wear, lower maintenance and longer life - Engineering Update](https://engineering-update.co.uk/wp-content/uploads/2019/12/Heason_Servotecnica_Turbine_SVTS-B.jpg_ico500-1.jpg)