Are thermoplastic mounted bearings corrosion - resistant?

Jul 20, 2026

Are Thermoplastic housed unit bearings corrosion-resistant? That's a question I get asked a lot as a supplier of Thermoplastic housed unit bearings. And it's a crucial one, especially for those looking to use these bearings in various industrial and commercial settings. In this blog, I'll break down the corrosion resistance of Thermoplastic housed unit bearings, share some real-world examples, and point you to some great products we offer.

 

First off, let's understand what Thermoplastic housed unit bearings are. These are bearings where the housing is made from thermoplastic materials. Thermoplastics are polymers that become pliable or moldable at a certain elevated temperature and solidify upon cooling. This makes them ideal for manufacturing bearings as they can be easily shaped into different forms.

corrosion

 

Now, let's talk about corrosion. Corrosion is a natural process that occurs when metals react with their environment, typically oxygen, water, or chemicals. It can cause significant damage to metal components, leading to reduced performance, increased maintenance costs, and even safety hazards. So, when it comes to bearings, corrosion resistance is a big deal.

The good news is that Thermoplastic housed unit bearings are inherently corrosion-resistant. Since the housing is made from plastic, it doesn't rust or corrode like metal housings. This is a huge advantage in environments where moisture, chemicals, or other corrosive agents are present.

For example

 
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the food and beverage industry

In the food and beverage industry, where equipment needs to be regularly cleaned with harsh chemicals, Thermoplastic housed unit bearings can withstand the cleaning process without corroding.

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the marine industry

Another industry where corrosion resistance is crucial is the marine industry. Boats and ships are constantly exposed to saltwater, which is extremely corrosive to metals. Thermoplastic housed unit bearings can be used in various applications on board, such as in pumps, winches, and steering systems, without the risk of corrosion.

 

 

 

 

 

the specific types of thermoplastic mounted bearings

 

Let's look at some of the specific types of Thermoplastic housed unit bearings we offer and how their corrosion resistance benefits different applications.

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Thermoplastic Take Up Bearings

Thermoplastic Take Up Bearings are used to adjust the tension in conveyor belts or chains. They are often installed in environments where there is a lot of dust, dirt, and moisture, such as in mining or agricultural settings. The corrosion resistance of the thermoplastic housing ensures that these bearings can operate reliably for a long time without being affected by the harsh conditions.

 

Thermoplastic Pillow Block Bearings

Thermoplastic Pillow Block Bearings are one of the most common types of mounted bearings. They are used to support rotating shafts and are found in a wide range of applications, from industrial machinery to automotive. In applications where the bearings are exposed to water or chemicals, such as in car washes or chemical processing plants, the corrosion-resistant thermoplastic housing provides a long-lasting solution.

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Thermoplastic Oval Flange Housing Units

Thermoplastic Oval Flange Housing Units are designed for applications where space is limited or where a specific mounting configuration is required. Their corrosion resistance makes them suitable for use in outdoor or wet environments, such as in irrigation systems or outdoor machinery.

 

Square Flanged Thermoplastic Housings and Units

Square Flanged Thermoplastic Housings and Units offer a secure and stable mounting option for bearings. They are commonly used in conveyor systems, fans, and other industrial equipment. In environments with high humidity or chemical exposure, the thermoplastic housing protects the bearings from corrosion, ensuring smooth operation.

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conclution

 

In addition to their corrosion resistance, thermoplastic mounted bearings have other advantages. They are lightweight, which can reduce the overall weight of the equipment and improve energy efficiency. They are also quieter than metal bearings, which can be beneficial in noise-sensitive environments. And they are often more cost-effective than their metal counterparts, especially when considering the long-term savings on maintenance and replacement.

contact

 

If you're looking for custom solutions, we also offer Custom Plastic Bearings | High-Quality Thermoplastic Bearings. Whether you need a bearing with a specific size, shape, or performance requirement, we can work with you to develop the perfect solution.

So, if you're in the market for corrosion-resistant bearings, don't hesitate to reach out. We have a wide range of Thermoplastic housed unit bearings to meet your needs, and our team of experts is ready to help you find the right product for your application. Contact us today to start the conversation about your bearing requirements.

  sales@winstarbearing.com

 +86 16632960682