The **5055-R** refers to a high-performance **Brushless DC (BLDC) Motor**, typically used in large-scale RC vehicles, electric skateboards, or industrial drones. The "5055" designation indicates its physical dimensions: **50mm** in diameter and **55mm** in length. --- ### 1. Technical Specifications The electronics of the 5055-R are designed for high torque and efficiency. Below is a standard profile for this component: | Feature | Typical Specification | | :--- | :--- | | **Motor Type** | Outrunner Brushless (BLDC) | | **KV Rating** | 140KV - 430KV (varies by winding) | | **Max Power** | 1200W - 2200W | | **Input Voltage** | 3S - 12S LiPo (11.1V - 44.4V) | | **Max Current** | 60A - 90A | | **Shaft Diameter** | 8mm (standard) | | **Sensors** | Available in Sensored or Sensorless versions | --- ### 2. Internal Electronic Components The "R" in 5055-R often signifies a specific revision or a "Ruggedized/Racing" version. Here are the core electronic elements inside: * **Stator Windings:** High-purity copper coils wound around a laminated steel core. The number of turns determines the **KV (RPM per volt)**. * **Neodymium Magnets:** High-temperature N45 or N52 magnets fixed to the outer bell (rotor). * **Hall Effect Sensors (Optional):** If the model is "Sensored," it contains a small PCB with three Hall sensors that detect the rotor's exact position for smooth low-speed startup. * **Bearings:** High-speed Japanese NMB or similar ball bearings to reduce friction and heat. --- ### 3. Required Peripheral Electronics To operate a 5055-R motor, you need a specific electronic ecosystem: 1. **Electronic Speed Controller (ESC):** Must be rated for at least 80A-100A to handle surges. For skateboards, a **VESC** (Vedder ESC) is the standard. 2. **Power Source:** LiPo or Li-ion battery pack capable of high discharge rates (C-rating). 3. **Controller:** A PWM-based receiver (RC remote) or a microcontroller (Arduino/ESP32) to send signals to the ESC. --- ### 4. Typical Wiring Diagram The motor features three thick wires (usually labeled A, B, and C) which carry the 3-phase AC power generated by the ESC. ```text [ Battery ] ----> [ ESC ] ----> (A) [ 5055-R ] | | ----> (B) [ Motor ] [ Receiver ] <-----/ \ ----> (C) [ ] ``` ---