Interesting posting on poured babbit bearings and non-detergent oil. Almost all the better engine bearings are still babbit bearings. (The cheaper ones use aluminum for the bearing surface.) The difference is in the thickness of the layer of babbit. Most bearings you will see will have steel outer shells with a layer of copper to bond the babbit to the steel. When you see the copper showing on a bearing shell the babbit bearing material is all gone in that area.
Back about the mid 70s bearing manufacturers started using nickel instead of copper for a bonding material. It was cheaper but soon was shown to be an inferior design. The nickel was too hard for any debris to be imbedded in the bearing and resulted in many crankshafts that were ruined. Engine manufacturers started recommending replacing engine bearings at every 100,000 miles.
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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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