Why do garbage trucks use sliding bearings? Roller bearings have the advantages of small friction, low mechanical loss, etc. But its size is too large. Due to the large and complex force of the garbage truck, the shaft journal size is not allowed to be reduced. The journal size must be ensured. Then the outer ring of the roller bearing is quite large, which makes the size of the crankcase quite large ( Such as domestic 1 35 series diesel engine). In addition to heavy-duty vehicles, such large cylinders on medium-sized and light-duty vehicles will affect the installation of diesel engines on the frame. The structure of the bearing pads is relatively simple, consisting of a steel soleplate and an alloy layer. At present, sliding bearings used on garbage trucks. They are collectively referred to as bearing bushes. The bottom plate of the bearing shell is usually made of 08 steel plates, and other brand steel plates are not allowed to be used as the bottom plate. The alloy layer above the bottom plate, there are more brands available. Low-power diesel engine and gasoline engine bearings, use of babbitt alloy and diesel engine with medium or higher power. The use of aluminum alloy bushings is relatively high; almost all high-power supercharged diesel engines use steel lead alloy bushings. Although the bearing is a very simple small part, it has strict requirements on the alloy composition and surface roughness. Industrial Manipulator,Industrial Robotic Arm,Small Industrial Robotic Arm,Industrial Power Assisted Robotic Arm DONGGUAN CARNO MACHINERY CO., LTD. , https://www.kainuochiller.com
In order not to make the size of the cylinder too large, the garbage truck diesel engine uses sliding bearings. The most important feature of sliding bearings is that they can withstand large shock loads and are suitable for operation under heavy load. Because the sliding bearing and the journal are supported by the oil film, they can be used under harsh working conditions. It is customary for China to refer to the crankshaft bearing as a large tile and the connecting rod bearing as a small tile. This is because they are shaped like the tiles that cover the house and are therefore used all the time, but also different from roller bearings.