The Schwinn A45 is very similar to the A40, and what a crappy machine that is.
Schwinn has a great name but makes a poor elliptical design. The single roller and track design, which is popular among many manufacturers due to the ability to save costs, increases the wear on the rollers causing more frequent replacements. We have also seen numerous frame failures in this elliptical design. This is a common problem when manufacturers are using cheaper quality steel to save money as well.