The Webb 3-Spoke with 4" Spacer Hub Assembly is a maintenance-free, greased-for-life unit designed to provide precise contact angles and accommodate both axial and radial loads. The unit is pre-set with clearance or preload to provide the necessary stiffness to accommodate tilting forces under specified loading conditions. This unit is ideal for applications that require a compact design and reliable performance. It is constructed from high-quality materials for maximum durability and long-lasting performance. FleetPride is your First Click in Heavy Duty®.