In printing manufacturing (Sheet Fed), maintenance is required to be done on printing rollers (40" to 65"). These presses are on average 4 to 6 ft. from the floor and rollers can be 20-60 lbs. ea. taking 3 men to do rollers in each unit. I watched this in progress and designed a pneumatic lift that would hold all rollers that would lift all to the working height and it now takes only 2 men and less lifting for roller removal and installation. All safety mechanics are in place, also holds all tools required to do the job.
It will move from press to press easily for multiple units.