The design was a plastic type pulley with a pre-in bushing riding on a lubricated metal shaft. Under the constant preure of the spring and the belt, running this type of configuration in a hot environment will only cause the lo of lubrication, and a lot of heat will be generated between the metal shaft and the nning bushing that holds the nning pulley.Soon, the heat builds up to a high level, so that 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 excellent design. First, rep the bushing with a ball bearing. Ball bearings can withstand greater loads and help reduce friction. The next point is that the ball bearing aembly is a sealed aembly. This prevents debris from entering the ball bearing and maintains internal lubrication. Therefore, the heat in the environment does not cause mor lubrication to escape the ball bearing aembly.Keeping the ball bearings lubricated ensures a service life, and the bearing design its helps keep friction heating to a minimum.Our dryer drum repment kit is suitable for your top or front load Samsung or Kenmore dryer.Model Number: Clothes Dryer Idler Pulley WheelMPN: DC93-00634A AP6038887 PS11771601Reps Part: DC96-00882C DC93-00634A DC97-07509BFit: For Samsung Clothes Dryercolour:SilverMaterial:ironPackage Contents:1 x Dryer Idler Pulley1 x Screw1 x ketOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.