casement window hardware

A quick learner from Hewitt NJ says:

I have about 8 to 10 broken crank mechanisms. 

Thumbnail of the uploaded file named mms_attachment_0_58d30fe82a0f43d2612c0b11ed8b5946.
A quick learner from Hewitt NJ says:
It looks like the part your recommending is correct. If it's not, is it returnable. Also, do you have the arm that connects the crank to the window? also, do you have the separate arm which would actually be the lower hinge guide arm?
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Casey from SWISCO responded:


Unfortunately, Roto stopped making these operators a while back and the only part currently available is the base itself; the updated 39-091 and 39-092.

We also offer the 39-224 folding and 39-230 standard handles but, unfortunately, the link arm that connects to the sash is obsolete and there is no known alternative. You are also welcome to review our return policy here. Thank you. 

Anatomy of a casement window
Anatomy of a casement window
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