Do you ever have to unwind rolls that have crushed cores? Crushed cores can be caused by many factors. However, finding reasons crushed cores occur and correcting them won't help you run the rolls with crushed cores you have to run now. And correcting crushed core problems is an issue to be discussed in another article.
Air shafts and air chucks won't fit inside crushed cores so your choice is to try to fix your cores with expensive core repair devices (that may or may not correct the problem) or to simply use inexpensive core cones to hold your roll of material. Core cones are cone shaped devices that are inserted into each end of the core. Their minor diameter is usually small enough to fit inside even the most distorted crushed core. These inexpensive, easy to use core holders will allow you to run rolls with crushed cores.
Another tip: buy the core cones with split bushing locking, instead of having the set screws contact your thru shaft directly. This will save your thru shaft from being damaged and will save your machine operators tons of headaches when loading and unloading rolls.
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