My hamster keeps chewing his cage bars and I was told that they do it out of boredom but my hamster bites so I can't put him in his exercise ball Any suggestions?

You could try putting food in the exercise ball and the hold it to the open cage door he will eventuaaly climb in. but hamsters do chew on their cages or anything to sharpen their teeth. if they dont chew on something,they wont be able to chew their food. but i suggest to get a pair of leather or chew-proof gloves to transport them.