The **FRT-40-R** is an electronic component primarily classified as a **Rotary Damper**. These parts are used to control the speed and motion of moving mechanisms (like lids, drawers, or covers) through viscous resistance. --- ## Technical Specifications The electronic and mechanical performance of the FRT-40-R is defined by its torque rating and material composition. | Feature | Specification | | :--- | :--- | | **Model Number** | FRT-40-R | | **Torque Type** | Fixed (Constant Resistance) | | **Torque Rating** | ~4.0 N·cm (0.4 kgf·cm) | | **Rotation Direction** | Right (Clockwise) | | **Material** | Polycarbonate (Body), Polyacetal (Gear) | | **Damping Oil** | Silicone Oil | | **Max Rotation Speed** | 50 RPM | --- ## Electronic & Mechanical Components ### 1. The Internal Viscous Fluid The "electronic" control of movement in this part is purely passive. It uses high-viscosity **Silicone Oil** trapped between a rotor and a stator. As the gear turns, the oil creates shear stress, converting kinetic energy into thermal energy, which slows the movement. ### 2. Gear Configuration The "R" in the suffix typically denotes the rotation direction or gear alignment. * **Module:** Usually 0.5 or 0.8. * **Number of Teeth:** Varies by specific sub-model, but standard is 11 to 14 teeth. * **Pressure Angle:** 20°. ### 3. Housing and Seals To prevent the silicone oil from leaking (which could damage nearby electronic PCBs or sensors), the FRT-40-R uses an ultrasonic welded housing and specialized O-rings. --- ## Applications in Electronics While the part itself is mechanical, it is a critical component in the assembly of high-end electronic devices: * **Soft-Close Trays:** Used in CD/DVD players or luxury automotive infotainment units. * **Control Panels:** Used on flip-down panels for printers or home appliances to ensure a smooth, premium feel. * **Smart Furniture:** Integrated into motorized or spring-loaded hidden outlets and cable management boxes. --- ## Comparison with Counterparts | Part | Direction | Torque | | :--- | :--- | :--- | | **FRT-40-R** | Clockwise | 4.0 N·cm | | **FRT-40-L** | Counter-Clockwise | 4.0 N·cm | | **FRT-G2-R** | Clockwise | 2.0 N·cm |