This is big bore rotary union of inner diameter 260mm,contact material apply imported copper graphite,reliable performance,low dust,long life.housing material uses stainless steel.It would be easier for you to choose the electronics brush slip ring. But if the current or voltage is large , carbon brushes slip ring is a better choice. You just need to tell us the parameters including channels, current of each channel, hole size, OD and so on, we will provide a suitable solutions and drawings for you in free according to your parameters.
• Electrical noise : ≤70mΩ(50rpm)
• Dielectric strength : ≥ 2000V@50Hz
• Isolation resistance : 500MΩ@500VDC
• Contact material : copper graphite
• Housing material : stainless steel
• Operating temperature : -20~+60℃