Ball bearings in small sewage plants

Patrick Czaja | 9. June 2021

In many cities and towns, it is completely normal for houses and flats to be connected to the public sewage system. Wastewater is sent to a central sewage plant, where it is cleaned. But this solution is not universal. Very small settlements and outlying houses are usually dependent on their own solutions. They have no connection to the communal wastewater cleaning system. In such cases, small sewage plants or household treatment plants are used when a lack of connection to large sewage plants prevents wastewater disposal. The plants are usually designed for between four and fifty individuals. There are a variety of sewage treatment methods. Our xiros polymer ball bearings are perfect for moving applications in this area. Why is that? We will tell you in the following article.

A customer from Brazil used metal ball bearings for the grated walkway rotation system on his household treatment plant. The components were constantly subjected to corrosive and abrasive media such as sea sand and sodium hypochlorite, which quickly led to wear. Because the plant is in continuous operation, the customer was looking for components that were wear-resistant and would work smoothly without grease. The problem with metal ball bearings was primarily that they use grease, which is quickly washed out in continuous operation in such an environment so that the balls, unable to handle the environment, corrode.

This prompted a search for components that were cost-effective, required no lubrication or maintenance, and could handle the plant’s continuous operation. The solution was pivoting xiros four-hole fixed flange ball bearings, which not only are chemical-resistant and cost-effective, but also operate extremely smoothly. Since the beginning of retrofitting, the system has operated continuously without any downtime at all.

Four-hole fixed flange ball bearings in the in-house sewage plant

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