What are the differences between sealed and unsealed insert bearings?

The main differences between sealed and unsealed insert bearings are related to their design and functionality. Here are some key distinctions:

1.Sealing: Sealed insert bearings have built-in seals that provide a protective barrier against contaminants such as dust, dirt, and moisture. These seals help to extend the lifespan of the bearing by reducing the risk of damage or premature wear caused by external elements. Unsealed insert bearings, on the other hand, do not have integrated seals and are more exposed to the surrounding environment.
2.Lubrication: Sealed insert bearings often come pre-greased with a specific amount of lubricant that is sealed within the bearing. This minimizes the need for additional lubrication during installation or maintenance. Unsealed insert bearings may require periodic lubrication to ensure proper functioning and prevent friction and wear.
3.Maintenance: Sealed insert bearings generally require less maintenance since the integrated seals provide added protection and help retain the lubrication. They are more suitable for applications where frequent maintenance is not desired or feasible. Unsealed insert bearings may require more frequent inspections, cleaning, and lubrication to ensure optimal performance.
4.Contamination resistance: Sealed insert bearings offer better resistance to contamination due to their sealed design, which helps keep out particles and fluids that could potentially damage the bearing. Unsealed insert bearings are more susceptible to contamination and may require more attention to prevent damage from external debris.
5.Operating conditions: Sealed insert bearings are often preferred in applications where the bearing is exposed to harsh or dirty environments, such as in agricultural machinery or industrial settings. Unsealed insert bearings are typically used in cleaner environments where regular maintenance and lubrication can be performed.

SB Hybrid Ceramic Insert Bearing Series