People who do not work on an assembly line do not understand the importance of making sure everything works correctly. When areas of the line do not work, someone could get hurt. That is why conveyor rollers need to be working. There could be strain injuries or worse when what is going over it is slowed or stopped. That is why maintenance has to have them in stock to replace. A roller not working is more than a simple issue that can be ignored for a while.
People do not realize what all can cause someone to miss work because of an injury on the job. It could even start by being a repetitive issue. A single conveyor roller going bad may not seem like anything. The truth is, it is probably the start of several going bad. Not replacing them could cause trays or items to be lifted. This could lead to any number of injuries. A safety department that has never worked the line might miss the problem for the first while. Maintenance will know why they need replacing as they go bad.
One of the problems in supply is that there are many cheap alternatives. Price does not always mean that it is quality. That is why there needs to be some research into the conveyor rollers that the company buys. When a factory is needing new rollers, they should see what Conveyor Systems and Engineering has to offer at their website.