A through bore slip ring allows 360° free transmission of power, om a stationary device to a rotary device while provides routing space in the center for hydraulic/ pneumatic shaft mounting. The central through bore also can be integrated with a FORJ or coaxial rotary joint to provide an integrated solution for the system. Pan link provide 3mm to 190mm standard through bore design to meet the need of different applications, including 3mm, 7mm and 15mm bore miniature through bore slip rings to satisfy some systems' mounting and low current or ansfer requirement. Larger diameter or high protection solutions can be customized. Robust configuration and low noise low wear multi-points fiber brush technology allows it to be the ideal slip ring solution in both industrial and military fields.PSR-T25 is an economical through-hole conductive slip ring with a through-hole diameter of 25.4mm and an outside diameter of 78mm. Compact design, high stability. Brush construction, multi - point is a reliable guarantee of exnt performance.