Are shielded bearings capable of being greased?

Shielded bearings are designed with protective shields that prevent contaminants from entering the bearing and keep the lubricant inside. These shields are not typically meant for repacking or greasing, as the design’s intent is to create a sealed environment that maintains the lubricant initially provided at the factory.

The primary function of shielded bearings is to reduce the need for maintenance while safeguarding the internal components from foreign particles and moisture. While some bearings can be designed to allow for relubrication, shielded bearings usually do not have this feature and are often replaced once the grease is depleted or the bearing shows signs of wear.

This design choice reflects the need for low-maintenance solutions in various applications. Thus, stating that shielded bearings are not capable of being greased aligns with their intended function and design characteristics, emphasizing the importance of understanding how different bearing types operate within various machinery settings.