Dust covers and wheel bearing protectors help to keep dust and dirt out of the wheel, to ensure that the trailer wheel axis is clean & lubricated, to promote smooth, safe towing of your trailer. The wheel bearing protector automatically maintains internal pressure to avoid seal damage and continuously lubricates the axle center to avoid jamming.
Your trailer’s wheel axle needs to be lubricated to dissipate heat, stave off corrosion, and keep those wheels a-rolling. There are a few general types of wheel-bearing lubrication systems, each with its particular maintenance characteristics.
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