The **FRT-30-R** is an electronic component primarily known as a **rotary damper**. These parts are designed to provide mechanical resistance to motion via viscous friction, allowing for controlled, smooth opening or closing of lids, trays, or doors in electronic equipment. --- ### 1. Technical Specifications The FRT-30-R belongs to the "FRT" series (typically manufactured by companies like FUJI LATEX). Below are the standard technical characteristics: | Feature | Specification | | :--- | :--- | | **Type** | Rotary Damper (Continuous Rotation) | | **Torque Range** | 3.0 ± 0.8 N·cm (0.03 ± 0.008 N·m) | | **Rotation Direction** | Bi-directional (Both ways) | | **Operating Temp** | 0°C to 50°C | | **Max Cycle Rate** | 10 cycles per minute | | **Rotor Material** | Polycarbonate (PC) or Polyacetal (POM) | --- ### 2. Internal Electronic/Mechanical Components While the FRT-30-R is a mechanical part used *within* electronic devices, its internal "electronics-adjacent" structure consists of: * **Silicon Oil (Viscous Fluid):** The core "working medium." The viscosity of this oil determines the damping force. It is chemically stable and resistant to temperature fluctuations. * **Rotor and Stator:** The rotor turns within the stator housing. The gap between them is filled with silicone oil, creating the shear force needed for resistance. * **O-Ring Seals:** Precision-engineered rubber seals that prevent the leakage of silicone oil into the electronic circuitry of the host device. * **Housing:** Usually made of high-grade engineering plastics (like Polycarbonate) to ensure durability and flame retardancy. --- ### 3. Applications in Electronics The FRT-30-R is commonly integrated into the following electronic hardware: 1. **Consumer Electronics:** CD/DVD player trays, soft-close lids for top-loading washing machines, and printer covers. 2. **Automotive Electronics:** Damping for glove boxes, center consoles, and retractable screen displays. 3. **Office Equipment:** Copier lids and scanner glass covers to prevent "slamming." --- ### 4. Key Performance Characteristics * **Soft-Close Effect:** It converts kinetic energy into thermal energy (via the oil), preventing mechanical shock that could damage sensitive internal sensors or PCBs. * **Speed Dependency:** The torque is proportional to the angular velocity; the faster you try to move it, the more resistance it provides. * **Maintenance Free:** These components are typically sealed for life and do not require lubrication or electrical power to operate.