Installing/hanging Air Filtration box - made my own pulleys

I purchased a (used) higher capacity air filter (Jet AFS-2000) to replace the current smaller filter in my shop. The current filter weighs about 40 lbs and the Jet ways 110 lbs. I didn't have anyone other than my wife to help me get this thing up in the air to fasten to the eye hooks on the 10' ceiling so I knew I had to fabricate some means of getting a mechanical advantage for the weight. I have dozens of various bearings in a box so I found several of a similar ID and OD and went to work. I cut some scrap wood and grabbed some 1/4" bolts, washers and nuts. I assembled the bearings with washers on the outside edge and placed them between the wood scraps and ran the 1/4" bolts through and also another 1/4" bolt on the other end of the wood scraps. The washers allow the pulleys to spin freely. I was then able to suspend these homemade pulleys from the eye hooks and feed some rope through one eye hook on the filter up and through 1 pulley down to the other eye hook on the filter then back up to the other pulley and down to the ground. I did this same setup for the front hooks on the filter as well as the hooks on the rear of the filter. My wife was able to pull on each rope and as she pulled I assisted by lifting as much of the 110 lbs of weight that I could as well as tried to balance the rope lengths across the filter to keep it fairly level. At several heights I was able to slide heavy duty milk crates under the filter and continued stacking them until there were 5 which raised the filter about 4.5 feet in the air over my table saw extended outfeed table. Once at that height, I was able to replace the rope/pulley arrangement with some heavy duty chain. Unfortunately I didn't take any pictures of the setup prior or during the process - only one picture of the final mounting position of the filter. The pictures show the home-made pulleys and a Word drawing of the pulley configuration and lastly the installed filter.

Congratulations on your problem solution! And nice teamwork with the wifey. Looking at the installed photo, I’d feel more comfortable with the chains going over the top of your beams instead of being suspended by screw eyes even though I’m sure everything is over rated as is for the 110#.

Yes I follow you on the suggestion of going over the joists - and I actually considered if only for a few seconds, but each of those hooks are rated for over 750 lbs.