Trailer parts are important for the overall function of the trailers. It can include items such as trailer torsion axles, idler hubs, jockey wheels, suspension parts, etc. The trailer manufactory and trailer parts merchant can purchase them from variety factories, importers, trader，ect.
The wheel bearings are an important part of the vehicle. It’s safe to say your safety behind the steering wheel partly depends on if these bearings are in top condition, as with other parts of the trailer. As stated earlier, you should be observant. When you notice anything strange, if you can’t do it yourself, call on a professional. It’s better to be safe than to be sorry.