I am familiar with SKF hubs When I worked at my last job I headed up the installation of a large machining, heat treating and assembly system at SKF plant in Aiken South Carolina. The system started with a large tractor trailer type hub blank our Vertical turning centers turned the Od. and Id which included the outer races from there they went thru an Induction Hardening machine that hardened the races, after hardening (race area only) a multy spindle vertical drill and reaming machine did the 12 stud holes then the hub went into a Id grinding machine that precision ground the outer races and matched them to the center of the hub that had the inner races machined ,Hardened and Ground in a similar fashion. The Hub now went onto an Assembly machine that chose the correct size tapered rollers based on the measurements made after grinding. An already long story short when the Hub came off the end of the machine it was ready to go on a truck. These hubs were both Steering and Trailer Hubs. The entire operation was automated from start to finish a man loaded the Hub on the first VTC. and Gantries, Grippers and conveyors moved them along to the end. Right next to our system was an Italian system very similar that did the same thing with Car and small truck size Hubs. There was still some human intervention, monitoring and filling Hoppers and feeders and such. When I replaced the Hubs on my 2000 Ford Expedition I asked for SKF.
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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