Window cranks/operators

A contractor from Tinley Park, IL says:
I have a client with a commercial bldg., circa 1985. Casement windows having an issue with gears stripping out.

Picture attached. Can you help with appropriate replacment part?
User submitted photos of a window operator.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
Thanks for posting! It's a bit difficult for me to identify what type of operator you have based on this image. To be able to determine what it is with the most accuracy, I'd have to see a few pictures of it fully removed from the window.

That said, take a look at our 39-014, Casement Window Operator. Compare the measurements and let us know if they differ in any way.
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