## Overview of the FRT-61-R The **FRT-61-R** is a high-precision, bidirectional **rotary damper** manufactured by Fuji Latex. It is primarily used in mechanical assemblies to control speed and provide smooth motion through fluid resistance (viscous friction). While it is a mechanical component, it is frequently integrated into **electronic enclosures**, automotive interiors, and consumer appliances where motion control is managed by electromechanical systems. --- ### Technical Specifications | Feature | Specification | | :--- | :--- | | **Damper Type** | Rotary / Vane Type | | **Direction** | Bidirectional (provides resistance in both directions) | | **Torque Rating** | 0.6 ± 0.15 N·m (at 20 RPM, 23°C) | | **Operating Temperature** | -10°C to 50°C | | **Fluid** | Silicone Oil | | **Weight** | Approximately 8.3g | | **Body Material** | Polycarbonate (PC) / Polyacetal (POM) | --- ### Internal Functional Components The FRT-61-R achieves its damping effect through several key internal parts: 1. **Rotor:** The central rotating shaft that connects to the external load. 2. **Stator:** The outer housing that remains fixed. 3. **Silicone Oil:** This is the "electronic-grade" fluid between the rotor and stator. The viscosity of the oil determines the damping torque. 4. **O-Rings/Seals:** High-quality rubber seals that prevent the leakage of silicone oil, ensuring a long lifecycle and consistent resistance. --- ### Applications in Electronic Systems The FRT-61-R is used in conjunction with electronic devices for the following purposes: * **Soft-Close Mechanisms:** Used in the lids of high-end audio equipment, printers, and laboratory devices to prevent slamming. * **Tactile Feedback:** Integrated into manual control dials where a "weighted" or premium feel is required. * **Vibration Isolation:** Acting as a mechanical low-pass filter to dampen oscillations in sensitive electronic sensors or cameras. * **Motorized Trays:** Often paired with a DC motor and gear set to ensure a smooth, constant speed when a CD/DVD tray or medical loading tray ejects. --- ### Installation Guidelines When integrating the FRT-61-R into an electronic assembly: * **Shaft Alignment:** The shaft should not be subjected to excessive radial or axial loads. * **Gear Engagement:** If using a gear, ensure the pitch matches the FRT-61-R's pinion gear (if applicable) or use a direct press-fit. * **No Oil Contact:** Do not allow cleaning solvent or flux to contact the device, as it may degrade the plastic housing or seals.