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(888) 312-8812 Login SignupThe Hendrickson Axle Cover Hub Cap encloses the wheel hub opening to protect internal components from debris and environmental exposure. Once installed, it creates a barrier that shields bearings and lubricant from road contaminants introduced during vehicle movement. The cover also supports pressure balance within the hub area as rotation occurs at speed. Its role is passive, yet continuous, acting as a boundary between internal lubrication zones and the outside environment. The cap remains stationary while the hub rotates behind it, allowing internal parts to operate without interference. By closing off the axle end, the assembly supports long-term hub operation under varying driving conditions. The Hendrickson S-34784 contributes to wheel-end protection where axle components require consistent isolation.
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