The invention provides a wheel design that incorporates both a shield and
seal on both sides of the guide wheel to eliminate direct liquid pressure
on the seal. By retaining the lubrication, bearing life is extended,
dramatically reducing machine downtime. In the presently preferred
embodiment, the combination of a guide wheel with two rubber spring
return (RSR) seals in-bound of two shields, increases guide wheel life
through the following: The shields prevent the direct force of a high
pressure wash-down from reaching the seal directly. There is a non-direct
path between the shield and the outer raceway of the guide wheel to allow
any trapped liquid to seep back out of the guide wheel. Also, as the
guide wheel rotates, any liquid between the shield and seal is spun-out
by centrifugal force.