Buying a Trailer Center Cap If you’re new to trailering or just wanting to include some extra flare to your truck, acquiring a trailer hub cap might be a concept. These little steel covers atop the center of trailer wheels (sometimes called dust caps) keep dirt, water, sand and also road grime out of your bearings to make sure that they do not wear down in time. You’ll find these caps in a variety of designs, shapes and also colors. Some are shiny chrome as well as others are plain steel, relying on the design of wheel you have. You need to get a trailer center cap that matches the design of the trailer’s wheels and is made to stand up to the most intense conditions. A few of our faves are the Stemco brand name as well as the Hubco product from Wheelco Vehicle & Trailer. Commonly, you’ll want to pick a hubcap that has the precise very same number of studs as the trailer’s wheel. Typically, this will be 8 of 5/8″, 8 of 3/4″ or 12 of 1/2″ studs. Among the most common blunders when buying a trailer hub cap is to over-grease it. Over-greasing is bad for your bearings due to the fact that it includes stress to the genuine seal and also can eventually trigger the dust cap to blow off, subjecting the bearings to dirt and also dirt. A variety of makers, consisting of EZ Loader and also Ranger, make use of oil-filled centers in their trailers. These hubs layer the bearings with oil as they rotate, developing a a lot more effective obstacle in between the bearings as well as water than oil. These centers have the added advantage of being much easier to solution since you can drain pipes the oil out without eliminating the whole center. Yet they aren’t suggested for trailers that sit for extended amount of times due to the fact that the oil can settle on the lower fifty percent of the bearings, permitting water to get into the upper section of the center assembly. There are two major ways to restore your trailer’s hubs, and the very best approach is normally to get a complete axle hub that features all the bearings and also seals currently pushed in. You can locate them at the majority of trailer supply parts counters and also online. When removing a hub’s dirt cap, you’ll need to boost the trailer to make sure that it can revolve freely. Then, making use of a small 2×4 or comparable object, extra pound the dirt cap in place so it’s established equally. This will make it simpler to get rid of the dust cap without ripping it off.