TC20 series slip ring is a micro slip ring, of which there is a 20 mm through-bore in the center of the shaft. It has the advantages of capsule & through bores slip ring. This design features long life & low cost, and fiber Precious metal brush contact technology realizes ultimate performance in many challenging applications. With aluminum alloy body, double precision roller bearings provide smoother running, lower torque and lower electrical noise. It is suitable for transferring signal & low power.(More product information welcome to visit slipring.net.) Feature: 20mm through-bore, provid 1~12 ways; Compact miniature design, small size,fit for harsh space; Multi circuits/channels design can delivr both power & signal at the same time; Hybrid FORJ or High Frequency rotary joints; Aluminium alloy shaft and body for excellent shielding; No need to maintain. Specification: Speed 300 RPM Voltage 240 VAC/DC Working Temp -30+80 Current 2A/way Dielectric Strength 600 V DC @ 50Hz Insulation Resistance >=500 M© @ 600 V AC Electrical Nosie less than 60 m© Body material Aluminium alloy Our products are widely used in: Security, Factory Automation, Electric Instrumentation, Medical, Aerospace, Marine,Civil and Military Fields.Such as: Crane, Giant Wheel, Cotton Picker, Medical Equipment, Detector,Rotary Tables,Robots,Strander, Webcam, Automatic Revolving Door,Exhibit / Display Equipment, Food Manufacturing Machine,Packaging Machine,Amusement Equipment, Irrigation Machine,Heated Rollers etc.