SIBCO Bearing

The role and limitations of bearing seals

The dust cover and seal of the bearing are important barriers to protect the lubricating grease inside the bearing. They can effectively prevent external particles from entering while keeping the lubricating grease from flowing out. However, there are differences in the protective effect of different types of seals:

1. Non contact dust cover:

This type of dust cover does not come into contact with the inner ring, so it will not increase the starting or operating torque, but its sealing performance is limited, and its effectiveness in preventing lubricating oil from being washed away is not good.

2. Contact seals:

The contact seal made of nitrile rubber can tightly contact the inner ring of the bearing, providing stronger anti pollution ability. However, it should be noted that this type of seal will increase friction torque, which may affect the operating efficiency of the bearing, therefore additional protective measures are required.

Intermediate solution: Non contact sealing

Non contact seals are a choice between dust covers and contact seals. They are also made of nitrile rubber, but do not rub against the inner ring, so it will not affect torque or maximum speed. This type of seal provides better protection than metal shielding layers and is suitable for most conventional application scenarios.

Professional advice on preventing lubricant flushing

To achieve optimal erosion protection, the following measures are worth considering:

1. Choose the appropriate lubricating grease

Highly waterproof grease: can effectively resist water flushing and maintain lubrication performance

Food grade grease: suitable for the food processing industry, can withstand regular steam cleaning or chemical cleaning.

PFPE grease: with extremely high chemical resistance, suitable for harsh environments

3. Optimize the sealing system

For high-speed light load applications, a combination of non-contact and contact seals can be considered

In heavy-duty or highly polluted environments, it is recommended to use a double lip contact seal

3. Install protective devices:

Install a protective cover outside the bearing to reduce direct impact

Design drainage channels to avoid continuous erosion of bearings caused by accumulated water

4. Regular maintenance and inspection:

Regularly check the wear of seals

Monitor the status of lubricating grease and promptly replenish or replace it

By comprehensively applying these methods, the anti erosion ability of bearings can be significantly improved, the service life can be extended, and the stable operation of equipment can be ensured.

Model inquiry tool assists in bearing selection

In order to help users better select and design bearings, our company has been committed to improving and optimizing the "model query" tool for many years. This tool has become an important reference in the industry, helping engineers and procurement personnel quickly find the required bearing models.

The characteristics of the "Model Query" tool are:

·Complete database: covering bearing models of numerous domestic and foreign brands, with comprehensive and detailed information.

·New and old model comparison: Supports the function of comparing old and new models, making it convenient for users to select models during equipment modification and upgrade.

·2D drawings: Provide detailed bearing size parameters and 2D drawings to assist in engineering design and product development.

·User friendly: Easy to operate, user-friendly interface, making it easy to search and view the required information.