Product Features  The steel chain wheel is reliably welded to the cylinder, enabling it to transmit higher torque and adapt to the requirements of medium and heavy-duty pallet conveying.  The key bearing assembly is designed with precision ball bearings and plastic inner/outer sleeves. This design not only ensures an aesthetic appearance but, more importantly, enables the roller to operate more quietly.  The plastic end caps at the roller ends are designed to prevent dust and splashing water from damaging the bearings to a certain extent.  Applicable tem...