Sliding bearing is what

Bearing according to the different bearing friction at work property can be divided into: sliding bearing and rolling bearing. The use of shaft and bearing with sliding motion and the load bearing called sliding bearing. According to the sliding bearing oil film formation on the surface of relative movement between two different principle. Can be divided into the hydrodynamic pressure lubrication bearing ( Also known as dynamic pressure bearing) And hydrostatic bearing ( Also known as static pressure bearing) 。 General discussion of hydrodynamic pressure lubrication bearing, it through the shaft and bearing the relative movement between the oil into the surface, form enough pressure film, to separate two surface, thus under load. Under the condition of fluid lubrication, sliding surface is lubricating oil without direct contact, also can greatly reduce the friction loss and wear of surface oil film also has a certain vibration absorbing ability. But starting frictional resistance is bigger. The bearing parts of the shaft are called journal, and shaft neck matching parts called bush. In order to improve the bearing surface of the friction properties and in them on the surface of cast anti-friction material layer is called the bearing bush. Bearing and bearing liner material collectively known as the sliding bearing material. The sliding bearing material with the commonly used bearing alloy ( Also called babbit or white metal) , wear resistant cast iron, copper and aluminum alloy, powder metallurgy material, plastic, rubber, hardwood and carbon - Graphite, ptfe ( PTFE） , modified polyformaldehyde ( POM） , etc. Sliding bearing applications generally under the condition of low speed and heavy loading conditions, or maintenance and charging of lubricating oil is difficult work. Sliding bearing main fault sliding bearing on the job as a result of the journal and bearing contact will produce friction, surface cause fever, even 'killed', so in the design of the bearing, should choose sliding bearing materials with good sex of anti-friction bearings, suitable lubricant and adopt the suitable method to supply, improve the bearing structure for thick film lubrication, etc. 1, tile surface corrosion: spectrum analysis found that non-ferrous metal element concentration anomaly; Spectrum appeared a lot of non-ferrous metal components of sub-micron wear particles; Lubricating oil excess moisture, acid value exceeds bid. 2, shaft neck surface corrosion: spectrum analysis found that iron concentration is unusual, there are a lot of iron in iron spectrum of submicron particles, water or high acid value oil paint. 3, a shaft neck surface strain: iron spectrum have iron series cutting grinding grain or black oxide particles, metal surface heat tint. 4, tile back micro wear: spectrum analysis found that iron concentration is unusual, there are a lot of iron in iron spectrum wear submicron particles, lubricating oil moisture and acid value anomalies. 5, a bearing surface strain: iron spectrum found cutting abrasive, abrasive ingredients for non-ferrous metal. 6, tile surface spalling, finds many large size iron spectrum fatigue spalling alloy wear particles, the layered grits. 7, bearing tile burning: there are more iron spectrum by means of large size, alloy and black metal oxides. 8, bearing wear: due to metal characteristics of shaft ( With high hardness, poor back down) Wait for a reason, easy to cause adhesion wear, abrasive wear, fatigue wear and fretting wear condition. Sliding bearing type is mainly divided into: 1, the solid friction bearing: solid friction bearing lubrication ( Friction) Status of solid lubrication, Friction) , solid friction bearing and without lubrication bearing and solid lubrication bearing, no lubrication bearing no lubrication materials, lubrication bearing friction surface, solid lubrication bearing with the method of coating solid lubricant film lubrication effect, such as bearing co. , LTD. , the production of self-lubricating bearing asunder jiashan extraordinary force and solid inlaid bearing. 2, oil bearing, oil bearing lubrication ( Friction) Status of solid, boundary, fluid lubrication ( Friction) Mixed state, the lubrication methods for dipping lubricant, such as powder metallurgy bearings. 3, inadequate oil supply bearing: inadequate bearing lubrication oil ( Friction) State is the same with oil bearing, is solid, boundary, fluid lubrication ( Friction) Mixed state, the lubrication grease cup, oil pot, wick, pad, ring lubrication, etc. , such as jiashan juli bearing co. , LTD production of boundary lubrication bearing, bimetallic bearing, copper base rolling bearings. 4, dynamic pressure bearing, the dynamic pressure bearing lubrication ( Friction) Status of fluid lubrication ( Friction) , the pressure of lubricating oil bath, oil circulation lubrication, etc. 5, hydrostatic bearing: hydrostatic bearing lubrication ( Friction) Status of fluid lubrication ( Friction) For the pressure oil circulation lubrication, lubrication way. Dynamic pressure bearing and hydrostatic bearing solid such as such as jiashan juli bearing co. , LTD production of copper set with all kinds of oil tank, oil hole, set of steel. What are the main points of sliding bearing assembly? The installation of the sliding bearing first to get rid of coating with protective rust agent ( Closed except bearing) , when installation can use hydraulic methods, requirements of bearing inner ring will exert without impact load bearing loaded on the qualified shaft bearing block, if there are no conditions can also use copper hammer gently tap on a bearing inner ring installation, ordinary bearing allows the color hot method, but not more than 100 degrees, heating the oil temperature and bearing should be relatively uniform heating.