The **MA12FBA-R** is a specialized high-performance cooling fan component typically manufactured by **Mechatronics**. It is designed for applications requiring high reliability and efficient thermal management in compact spaces. --- ### 1. Technical Specifications The part belongs to the **MA1200 series** of AC axial fans. Below are the primary technical parameters: | Parameter | Specification | | :--- | :--- | | **Frame Size** | 120mm x 120mm x 38mm | | **Input Voltage** | 115 VAC | | **Frequency** | 50 / 60 Hz | | **Bearing Type** | Dual Ball Bearing | | **Termination** | Wire Leads (R - Radial/Lead type) | | **Frame Material** | Aluminum Die-Cast | | **Impeller Material** | UL94V-0 Plastic | --- ### 2. Key Features and Construction #### A. Motor Design The "MA" series utilizes a **Shaded Pole Motor**. This design is common for AC fans because it is brushless, robust, and has fewer moving parts that can fail, making it ideal for continuous industrial operation. #### B. Bearing System The **"B"** in the part number signifies **Ball Bearings**. * **Longevity:** Dual ball bearings typically offer a lifespan of 60,000 to 70,000 hours at 40°C. * **Mounting:** Unlike sleeve bearings, ball bearing fans can be mounted in any orientation (horizontal, vertical, or angled) without sacrificing performance. #### C. Environmental Protection The aluminum housing acts as a natural heat sink for the motor itself and provides structural rigidity, preventing the frame from warping under high-temperature conditions. --- ### 3. Part Number Breakdown (Nomenclature) Understanding the suffix and prefix helps in identifying the exact variant: * **MA12:** Series identifier (120mm size). * **F:** Speed rating (High Speed). * **B:** Bearing type (Ball Bearing). * **A:** Voltage (115V AC). * **R:** Terminal type (Wire Leads). --- ### 4. Common Applications Due to its 115V AC input and industrial-grade construction, the MA12FBA-R is commonly found in: 1. **Server Racks:** Ventilation for IT infrastructure. 2. **Power Supplies:** Cooling high-wattage AC-DC converters. 3. **Industrial Cabinets:** Preventing overheating in PLC and motor control centers. 4. **Medical Equipment:** Reliable thermal regulation for diagnostic machines.