The original design a plastic type pulley with a press-in bushing riding on a lubricated metal shaft. Under the constant pressure of the spring and the belt, running this type of configuration in a hot environment will only cause the loss of lubrication, and a lot of heat will be generated between the metal shaft and the spinning bushing holds the spinning pulley. , the heat builds up to a high level, so the plastic pulley melts and the metal bushing starts to drag, thereby generating more heat. Then the melted pulley is separated from the metal bushing, causing the dryer to malfunction. This upgraded ball idler is an design. First, replace the bushing with a ball . can withstand greater loads and help reduce friction. The is the ball assembly is a sealed assembly. This prevents debris from entering the ball and maintains internal lubrication. Therefore, the heat in the environment does not cause more liquid lubrication to escape the ball assembly. the lubricated ensures a long service life, and the design itself helps keep friction heating to a minimum. dryer drum replacement kit is suitable for your top or front load or dryer. Model Number: Clothes Dryer Idler Pulley Wheel MPN: DC93-00634A AP6038887 PS11771601 Replaces Part: DC96-00882C DC93-00634A DC97-07509B Fit: For Clothes Dryer colour:Silver Material:iron Package Contents: 1 x Dryer Idler Pulley 1 x Screw 1 x Gasket Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.