I design Automated Assembly Machines that often use pneumatic cylinders. When I used the previous version of SketchUp (2016), I could import the 3D cylinder models directly from the SMC website. But since I upgraded to 2017 (last week), I can’t import these models anymore.
All the cylinders I have previously saved in my personal library will import, but not any new ones I download from the SMC website.
The first one I downloaded, JCDQ100TF-25 – JC(D)Q, in the SKP file won’t open. SketchUp reports an unexpected file format which indicates the file is corrupt. That would be something you’d need to take up with SMC.