(Burlington, Ontario) Sleeve bearings in vertical, medium lubricated pumps are a frequent source of problems. Poor shaft support, dry starts, high friction and rapid wear in abrasive services are some of the more common problems encountered. One of the common solutions to some of these problems is the addition of a closed tube around the shaft with either a fresh water flush or oil/grease lubrication. This approach has a high initial cost and a continuing expense in the supply of fresh water or oil/grease and also has the potential for contamination of the medium being pumped. Jacksonville Electric Authority (JEA) of Florida has solved their abrasive wear problem by installing Thordon bearings.