363 (Type 9) Porter Cable Belt or Drum Sander - Overview

This Ball Bearing has metal shielding on both sides. This is a genuine Porter Cable replacement part that is sold individually. • Ball 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. This ...Read morereduces wear on the tool and allows it to run smoothly. • Bearings experience constant wear when the tool is in operation from pressure, heat, vibration and friction. Because of this, many Bearings need periodic maintenance or replacement.