The **48NAM-2BV-R/F** is a specific model designation typically associated with high-performance **AC/DC Cooling Fans**, often manufactured by companies like **NMB (MinebeaMitsumi)** or similar industrial fan providers. Below is a breakdown of its technical specifications and electronic components. --- ### 1. Technical Specifications Table | Feature | Specification | | :--- | :--- | | **Voltage** | 100V - 115V AC (Standard AC Line) | | **Frequency** | 50 / 60 Hz | | **Input Power** | Approx. 14W - 16W | | **Bearing Type** | Dual Ball Bearing (indicated by "B") | | **Frame Size** | 119mm x 119mm x 38mm (Typical 4.7 inch) | | **Airflow** | High CFM (Cubic Feet per Minute) | | **Termination** | Lead Wires or Faston Terminals | --- ### 2. Electronic Parts & Design The "48NAM" series utilizes a specific architecture designed for longevity and thermal management. #### Internal Motor Components: * **Shaded Pole or Capacitor-Run Motor:** These fans typically use a single-phase induction motor. The internal windings are copper-coiled around a laminated steel stator. * **Ball Bearings:** The "2BV" designation usually signifies a **Double Ball Bearing** system. This allows the fan to be mounted in any orientation (horizontal or vertical) and provides a longer MTBF (Mean Time Between Failures) compared to sleeve bearings. * **Thermal Protection:** These units often feature an internal impedance protection or a thermal cutoff to prevent the motor from burning out if the blades are obstructed (locked rotor protection). #### Material Composition: * **Casing/Frame:** Usually Die-cast Aluminum (acts as a heat sink for the motor). * **Impeller (Blades):** Reinforced Plastic (PBT) or Steel, depending on the specific environmental rating (R/F suffix). --- ### 3. Suffix Breakdown (R/F) The suffix provides information regarding the electrical connection and safety ratings: * **R/F:** Often stands for **RoHS Compliant** and **Frequency** specific or **Filtered**. * In some industrial catalogs, the "F" indicates the fan includes a mounting flange or specific lead-wire configuration for grounding. --- ### 4. Applications Because of its robust construction, this part is found in: 1. **Server Racks:** Constant cooling for networking hardware. 2. **Power Supplies:** Large industrial AC/DC converters. 3. **Control Cabinets:** Cooling for PLCs and industrial automation gear. ---