This replacement ball bearing is an authentic component which is designed for use with Craftsman equipment. Bearings are used to reduce friction between rotating parts. The balls or rollers take the load and spin, distributing the weight evenly while the minimal contact area of the ball reduces friction. Symptoms of failing bearing may in...Read moreclude squealing, screeching, and an entirely new type of grinding noise. This high-quality component is made of durable metal and is sold as an individual part. A wrench set will be needed to perform this repair. Make sure to refer to the appropriate diagrams for your model to ensure the proper replacement procedure.