Fans and pumps are universal mechanical equipment that operate continuously year-round. Their working conditions are mostly continuous operation, radial load, dusty, humid or even outdoor installation. Incorrect bearing selection can easily lead to water ingress, dust entry, corrosion, premature wear and seizure.

For fan and pump bearing selection, prioritize three points: load capacity, sealing type, and dustproof/waterproof grade.

Conventional centrifugal fans and pipeline pumps mainly bear radial load, so deep groove ball bearings are sufficient, featuring stable speed, easy installation and strong versatility. Large industrial fans, high-power pumps and cantilever equipment bear certain axial load, so angular contact ball bearings (or paired installation) are recommended to improve load capacity and operational stability.

• Clean indoor working conditions: open or single-sided sealed bearings are acceptable.

• Dusty, humid or outdoor environments: double-sealed, reinforced sealed bearings are mandatory to effectively block dust, moisture and water mist from entering the bearing interior, preventing grease deterioration and raceway corrosion.

•