In the world of micro-motors, especially those powering the latest bladeless fans and high-end kitchen appliances, precision is everything. If you are a design engineer or a sourcing manager, you’ve likely encountered the 693 deep groove ball bearing.
But why is this specific model considered the "gold standard"? And why is the ZZ (Metal Shield) version almost always preferred over the 2RS (Rubber Seal) for these applications? Let’s dive into the technical details.
➊ The Bladeless Fan Requirement: Ultra-High Speed
Bladeless fans (and modern hair dryers) rely on high-speed Brushless DC (BLDC) motors to create a consistent, powerful airflow. These motors often operate at tens of thousands of RPM.
The 693 Advantage: The 693 bearing is engineered for...
