A plain bearing SKF, which is the simplest type of bearing, consists of just a bearing surface and no rolling elements. Therefore, the journal (i.e., the part of the shaft in contact with the bearing) slides on the bearing surface. The simplest example of a sliding bearing is a shaft that rotates in a bore. A simple linear bearing may be a pair of planes designed to allow movement. Examples include a drawer and the slide on it or a lathe in a way bed one.
Sliding bearings are the least expensive type of bearing. They are also compact and lightweight, and have a high load carrying capacity.
The sliding bearing design depends on the type of motion the bearing must provide. The three types of motion possible are
Bearing: This is the most common type of plain bearing; it is simply a shaft that rotates in a bore. In locomotive and railroad vehicle applications, journal bearings specifically refer to plain bearings, which were once used at the end of railroad wheelset axles and were surrounded by journal boxes. Today’s journal box bearings are rolling bearings, not plain bearings.
Linear bearing: The bearing provides linear motion; it can be used in the form of a circular bearing and shaft or any other two mating surfaces (for example, sliding plate).
Thrust bearing: thrust bearing for the axial force acting on the shaft to provide a bearing surface. An example is a drive shaft.
① According to the direction that can bear the load can be divided into radial (centripetal) plain bearing SKF and thrust (axial) plain bearing SKF two categories.
② According to the type of lubricant can be divided into oil lubrication bearing, grease lubrication bearing, water lubrication bearing, gas bearing, solid lubrication bearing, magnetic fluid bearing and electromagnetic bearing 7 categories.
③ according to the lubrication film thickness can be divided into film lubrication bearing and thick film lubrication bearing two categories.
④According to the shaft material can be divided into bronze bearings, cast iron bearings, plastic bearings, jewel bearings, powder metallurgy bearings, self-lubricating bearings and oil bearings, etc.
⑤According to the structure of the shaft tile can be divided into round bearings, elliptical bearings, three oil leaf bearings, stepped surface bearings, tiltable tile bearings and foil bearings, etc.
Plain bearing SKF in agricultural machinery include connecting rod bearings, crankshaft main bearings and bushings for various drive shafts. Plain bearings are a kind of fragile parts, plain bearings damaged by poor lubrication, commonly known as “burning tile”. If the agricultural machinery “burn tile” accident, will be forced to carry out a series of disassembly, repair and assembly, time-consuming and labor-intensive, so you need to try to avoid.
plain bearing SKF lubrication is to reduce frictional resistance, reduce wear, cooling bearings, vibration absorption and rust prevention. In order to work properly and prolong the life of the bearing, it is necessary to select the correct lubricant and lubrication device.
Lubricant is divided into lubricant, grease and solid lubricant.
