Sleeving Oversized Deep Holes for Repair
Sleeving is a repair technique I have used to salvage deep hole drilling parts when the bore was machined oversize, damaged during drilling, or worn in service. The process involves boring the damaged hole to a larger diameter and installing a thin-walled sleeve that restores the original bore size. I have saved parts worth thousands of dollars this way. Problem Description An oversized bore in a deep hole drilling application can mean the part is scrap. The bore diameter is outside tolerance, the surface finish is damaged, or the bore is out of round. Replacing the part entirely costs 3-5 times what a sleeving repair costs and takes longer to procure. ...