The **FRT-BA-R** is a specific model within the **FRT series of rotary dampers** manufactured by **Fuji Latex**. These components are widely used in the electronics and automotive industries to provide smooth, controlled motion in mechanical assemblies. --- ### 1. Component Overview The FRT-BA-R is a miniature, bi-directional rotary damper. Its primary electronic/mechanical function is to convert kinetic energy into thermal energy via viscous drag, preventing components from slamming shut or snapping open. | Feature | Specification | | :--- | :--- | | **Type** | Rotary Damper | | **Direction** | Bi-directional (provides torque in both directions) | | **Torque Range** | Typically 0.2 to 1.0 N·m (varies by sub-model) | | **Housing Material** | Polycarbonate or high-grade plastic | | **Core Fluid** | High-viscosity Silicone Oil | --- ### 2. Internal Mechanism The device consists of three main electronic/mechanical internal parts: 1. **Rotor:** The shaft that connects to the external moving part (e.g., a lid or drawer). 2. **Stator:** The outer housing that remains stationary. 3. **Silicone Oil:** A specialized fluid sandwiched between the rotor and stator. As the rotor turns, the oil resists the movement, creating a "damping" effect. --- ### 3. Key Specifications for Engineers When integrating the FRT-BA-R into a PCB-adjacent mechanical assembly, the following technical data is critical: * **Operating Temperature:** Generally $-10^\circ C$ to $+50^\circ C$. Viscosity changes with temperature, affecting torque performance. * **Durability:** Rated for approximately $50,000$ to $100,000$ cycles. * **Rotation Angle:** 360 degrees (continuous rotation). --- ### 4. Common Applications in Electronics The FRT-BA-R is frequently found in the following electronic hardware: * **CD/DVD/Blu-ray Trays:** To ensure the tray ejects smoothly. * **Control Panels:** Soft-opening covers for high-end audio equipment or industrial interfaces. * **Consumer Electronics:** Slow-closing lids for printers, scanners, or smart home appliances. * **Automotive Interiors:** Used in sunglass holders, ashtrays, and glove boxes. --- ### 5. Identification Code Breakdown The part number `FRT-BA-R` provides specific configuration details: * **FRT:** Series name (Fuji Rotary Torque). * **BA:** Indicates the body size/style. * **R:** Usually denotes the specific torque rating or a variation in the gear/shaft attachment.