The **47LM-162W-R** is a specific model of an **AC Axial Fan**, typically manufactured by NMB Technologies (MinebeaMitsumi). These fans are designed for cooling industrial equipment, server racks, and power supplies. --- ### 1. Technical Specifications Below are the primary electronic and mechanical specifications for this component: | Parameter | Specification | | :--- | :--- | | **Input Voltage** | 115V AC (Single Phase) | | **Frequency** | 50 / 60 Hz | | **Input Power** | 15.0W (at 60Hz) / 18.0W (at 50Hz) | | **Rated Current** | 0.21A / 0.17A | | **Speed (RPM)** | 2,600 ~ 3,100 RPM | | **Air Flow** | ~100.0 CFM (Cubic Feet per Minute) | | **Static Pressure** | 0.330 in H2O | | **Noise Level** | 41 - 45 dB | | **Bearing Type** | Dual Ball Bearing | --- ### 2. Breakdown of the Model Number The part number follows a specific nomenclature used by NMB: * **47**: Refers to the frame size (Approx. 119mm or 120mm). * **LM**: Series designation (Long Life/Medium performance). * **162**: Indicates the frame thickness and electrical characteristics. * **W**: Termination type (Lead wires rather than terminals). * **R**: Often indicates "RoHS Compliant" or a specific rotation/rib design. --- ### 3. Key Electronic Features * **Shaded Pole Motor:** This fan utilizes a shaded-pole induction motor, which is common for AC fans. It is reliable and has no brushes to wear out. * **Thermal Protection:** These units usually feature **Impedance Protection**. This means the motor is designed so that if the fan blade is stalled (locked rotor), the internal resistance prevents the coils from overheating and catching fire. * **Dual Ball Bearings:** The "162" series typically uses high-precision ball bearings, which offer a significantly longer lifespan (approx. 50,000 to 100,000 hours) compared to sleeve bearings. * **Aluminum Casing:** The frame is usually die-cast aluminum, which acts as a heat sink for the motor coils, improving durability in high-temperature environments. --- ### 4. Wiring Diagram (Lead Wire Version) Since this is the "W" (Wire) version, it typically features two lead wires: ```yaml Wire 1: Black (Line/Live) Wire 2: Black (Neutral) Ground: Often provided via a screw point on the aluminum frame. ``` ---