Import external fbx animation without skeleton


I’m looking for a way to import a simple fbx animation from Blender with the meshes into UE 4.5.1. The animation is rotating cogwheels that have constriants to their parent to make a full rotation of all. But everything I find on this issue is that it should have a skeleton. Somewhere I also found that there used to be an “import rigid body” option which could be used to import these kind of animations.

Is there a way to import non-skeletal animations? Or is there another way to make these animations?

Got it working (mostly). I had to uncheck the “all actors” option in the FBX export settings. Now it is recognised as an importable FBX and I have an option to create a new skeleton mesh when importing.