The term **6216-R** most commonly refers to a specific series of high-performance **Ball Bearings** used extensively in electrical motors and industrial machinery. In the context of "electronic parts," it is a critical mechanical component of an electromechanical system. --- ### 1. Component Overview The 6216-R is a metric-sized deep groove ball bearing. In electronics and power systems, it serves as the primary interface between stationary and rotating parts. | Feature | Specification | | :--- | :--- | | **Type** | Deep Groove Ball Bearing | | **Bore Diameter (Inner)** | 80 mm | | **Outer Diameter** | 140 mm | | **Width** | 26 mm | | **"R" Suffix** | Indicates a specific seal or snap ring (Manufacturer dependent) | --- ### 2. Role in Electronic Systems While not a semiconductor, the 6216-R is vital for the following electronic/electrical hardware: * **Electric Motors:** Supports the rotor shaft, ensuring minimal friction and heat during high-speed rotation. * **Generators/Alternators:** Used in large-scale power generation to maintain alignment of the electromagnetic core. * **Industrial Automation:** Found in the joints or drive units of heavy-duty robotic arms and CNC machinery. ### 3. Technical Variations Depending on the manufacturer (e.g., SKF, NSK, FAG), the "R" suffix or similar codes define the protection method: 1. **6216-2RS:** Equipped with rubber seals on both sides to protect against dust and moisture (common in harsh electronic environments). 2. **6216-ZZ:** Equipped with metal shields for high-speed applications where heat dissipation is critical. 3. **6216-NR:** Features a snap ring groove and a snap ring for axial location within a housing. --- ### 4. Key Selection Criteria for Engineers If you are integrating this part into an electronic project, consider these factors: * **RPM Limit:** Ensure the bearing can handle the motor's maximum frequency. * **Load Rating:** Calculate the radial and axial loads of the moving assembly. * **Noise/Vibration:** Precision-grade bearings (P6 or P5) are required for sensitive electronic equipment to prevent electromagnetic interference (EMI) caused by mechanical vibration.