Hi, Im a 3D Designer, I´d like to collaborate with your project, I have experience with 3D mechanical animations like you are looking for, I have technical knowledge about mechanic, 3D modeling and animation industrial machines, rig, and another subjects about this kind of works I sure I can do your project perfectly, please take a look on my portfolio were you can see all my skills and my customers reviews:
https://www.freelancer.com/u/ilustraccion
And I offer to work for your project first and you just will pay me if you are satisfied with my job, It´s my guarantee and I promise you are not going to waste your time.
I´m going to provide you the originals files in the format you want redy to print or show in screen and mobiles
Please contact with me over the chat to discus all details.