How many major revisions are allowed when publishing with Elsevier?
To give this an answer:


Yes, it is posisble that you are again asked to make major revisions.
It's completely up to the editor to decide how many rounds of revisions are appropriate.  There's not a fixed number for all the publisher's journals.
You'll have to ask someone in your field, ideally someone who's published in that journal before.  But it also depends a lot on how speedy the reviewer is, and how long the editor gives them.