SEW-Eurodrive has 2D & 3D models available of it's product line. If you only require the motor, I believe you can just enter that part number, else erase the reducer from the model. Their main site id
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Their DriveCAD site is
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You will require to know the motor part number and/or drive part number. Using their PT Pilot online selection tool will help (you must register). You may happen to find a catalog also.
We use SEW exclusive, so I'm fairly knowledgeable about their product line and specifying information for their 3D files. Let me know if I can assist you with any other stuff.