What type of bearing protector is specified for TAND trailers?

The correct identification of the bearing protector for TAND trailers is the air-tight bearing protector. This type of protector is designed to prevent contaminants such as dirt, moisture, and debris from entering the bearing assembly while also retaining lubricant within the assembly. An air-tight protector ensures that a sealed environment is maintained around the bearings, which is crucial for their proper function and longevity.

In the context of TAND trailers, where the conditions of use may involve exposure to various elements, an air-tight bearing protector significantly enhances reliability by reducing the risk of corrosion and wear. This is particularly important for maintaining the performance of trailers that may operate in different terrains and under varying weather conditions.

The alternative options, while related to bearing protection, do not provide the air-tight sealing required by TAND trailer applications. For example, grease-filled protectors may not effectively prevent moisture ingress under all operational circumstances, while waterproof bearing protectors may not ensure the complete sealed environment necessary for performance. Oil-sealed protectors, while beneficial in certain contexts, may not specifically address the unique needs of TAND trailers with the same efficacy as air-tight protectors.