Bearings made of acetal resin are typically used for which of the following applications?

Bearings made of acetal resin are particularly well-suited for light duty and corrosive environments due to the material's unique properties. Acetal resin, also known as polyoxymethylene (POM), is characterized by its excellent wear resistance, low friction, and good chemical resistance. This makes it ideal for applications where exposure to moisture and various chemicals is a concern.

In light duty applications, where the load is not extremely high, acetal bearings can provide a reliable solution, offering adequate strength without the added weight or cost of more robust materials. Additionally, because acetal is inherently resistant to many solvents and corrosive substances, it performs well in environments where traditional metal bearings may corrode or degrade.

Other choices like high heat environments, heavy load applications, and vacuum environments do not align with the properties of acetal resin bearings. Acetal may deform or lose its mechanical integrity at elevated temperatures, making it unsuitable for high heat situations. In heavy load applications, stronger materials like steel or bronze are preferred due to their superior load-bearing capacity. Lastly, while acetal can handle some conditions, it is generally not recommended for vacuum environments where other specialized bearings are utilized to ensure performance.