"Tom" wrote in message
...
snip----

It's a metal cutting bandsaw, they don't have rubber tires and the
wheels don't need crowning.
The blade needs replacing before anything else.

Tom

What Tom said. The typical horizontal band saw has no crown, nor rubber
tire. They typically have a shoulder, against which the back of the blade
runs. If the wheels are properly aligned with one another, the blade will
stay in place. A tired, old blade often will come off time and again.
You can usually attribute the problem to minor dissimilar stretch of the
blade. Try a new blade before anything else.

Harold