The **JR-56-R** is typically associated with high-quality **Heavy Duty Power Connectors** or **Circular Connectors**, often used in industrial machinery, telecommunications, and high-power applications. ### 1. Component Overview The JR series (specifically the "56" shell size) is designed for robust electrical connections in environments where vibration, moisture, and dust are present. | Specification | Description | | :--- | :--- | | **Shell Size** | 56mm (Diameter) | | **Type** | Circular Multi-pin Connector | | **Connection Type** | Threaded Coupling / Bayonet Locking | | **Termination** | Solder or Crimp contacts | | **Material** | Aluminum Alloy with Anodic Oxidation/Chrome plating | --- ### 2. Key Electronic Parts and Construction The assembly of a JR-56-R connector consists of several critical electronic and mechanical sub-components: #### A. The Contact Pins (Male/Female) * **Conductivity:** Usually made of gold-plated or silver-plated copper alloy to ensure low contact resistance and high current carrying capacity. * **Pin Configuration:** Depending on the specific sub-model, these can range from 4 large power pins to 30+ signal pins. #### B. Insulator/Insert * **Material:** Usually made of high-grade PPS (Polyphenylene sulfide) or Bakelite. * **Function:** It holds the pins in a fixed orientation and provides high dielectric strength to prevent electrical arcing between contacts. #### C. The Housing (Shell) * **EMI Shielding:** The metal shell acts as a Faraday cage to protect internal signals from Electromagnetic Interference (EMI). * **Grounding:** Provides a path for chassis ground when the connector is mated. #### D. Sealing Components * **O-Rings/Gaskets:** Rubber seals provide water and oil resistance (often rated IP65 or IP67), protecting the electrical interface from oxidation. --- ### 3. Technical Specifications (Typical) While exact specs can vary by manufacturer (such as JAE or generic industrial brands), the standard parameters for a 56-size connector are: * **Rated Voltage:** 250V to 500V AC/DC. * **Rated Current:** 10A to 50A per contact (depending on pin thickness). * **Insulation Resistance:** > 2000 MΩ. * **Contact Resistance:** < 5 mΩ. * **Operating Temperature:** -55°C to +125°C. --- ### 4. Common Applications * **CNC Machinery:** Connecting control cabinets to servo motors. * **Aviation/Marine:** Reliable power distribution in harsh conditions. * **Medical Equipment:** High-density signal and power transmission for imaging devices.