Books and knowledge

The main trouble of the sliding bearing includes the following several respect: 1The tiling is corroded: Spectral analysis finds coloured metallic element is unusual in density; The inferior mm levels of a lot of nonferrous metals compositions appear to abrade the particle in the iron table; Lubricating oil moisture exceed standard and acid value exceed standard. 2The surface of the journal is corroded: Spectral analysis finds the iron element is unusual in density, there is one submicron of particles of a lot of iron compositions in the iron table, lubricating oil moisture exceed standard ...

The turning on gear is apt to fall into outside mediums such as the dust, bits,etc. and cause and lubricate the oil pollution while transmitting, the gear is apt to produce abradant abrasion. While covering the turning on gear, under the same condition of work, the lubrication of the turning on gear demands to be the same as closing gear. The turning on transmission of gear usually uses oil of high viscosity, pitch lubricant or lubricating grease, and can work at lower speed effectively. There is classification of three pieces of grade, the ordinary turning on gear oil CKH now , the pressing ...

Checking the event while operating has rolling, vibration, temperature, state,etc. lubricated of the bearing, the detailed conditions are as follows: First, the bearing one are rolled sound Adopt, examine sounds of device, check to size and tone quality to roll of bearing in the operation, even the bearing has slight stripping etc. to damage, will pronounce unusual sound and irregular sound, by can be distinguished to examine one sound of devicesing. Second, vibration of bearing Is it getting more sensitive very to shake about damage of bearing bearing,it for example peel off, compression, ...

The bearing is in the course of rubing and processing, its surface of job is rubed pared through the high-speed emery wheel rotated, so does not carry on operation and adjust the apparatus while rubing and paring according to the homework guide book, will the surface appears all sorts of defects, so that influence the global quality of the bearing in work by bearing. The bearing, when accurate to rubs and pares, because of coarse to expect very much, job whom surface appear rub, sharpen trace, can observe surface their rub, have the following aspects to sharpen the trace mainly with naked eye ...

The dependability of the job device exerts a tremendous influence to the hydraulic excavator complete machine performance, the operating mode when the job device is working is heavily loaded for low-speed, this puts forward very high requirement to working performance of axle and bearing, in the excavator design, the weight of the job device should be possible on the premise of being able to be satisfied with the design performance parameter small, so it is essential to excavator complete machine performance to design axle and bearing rationally. Discuss the designs of the axle, bearing, axle ...

Checking the event while operating has rolling, vibration, temperature, state,etc. lubricated of the bearing, the detailed conditions are as follows: First, the bearing one are rolled sound Adopt and examine one sound of devices to check size and tone quality of rolling of bearing in operation, even the bearing has slight stripping etc. to damage, will pronounce unusual sound and irregular sound, by can be distinguished to examine one sound of devicesing. Second, vibration of bearing Getting more sensitive very when shaking bearing for bearing's damage,it for example peel off, compression, ...

5 The oil is lubricated Under the high-speed, high-temperature condition, the lipoprotein can adopt the oil to lubricate when lubricated and has not adapted to yet. Through the circulation of the lubricating oil, can take a large amount of heat away. The viscosity is the important characteristic of the lubricating oil, the size of the viscosity influences the thickness of oil film formed among flowability and friction surface of the lubricating oil directly, the viscosity of lubricating oil is generally 12-15cst under the bearing working temperature. Rotational speed should select lower ...

2The engine oil becomes rare. Because some diesel engines gush out the oil pump and lubricate and adopt the lubricated way of the pressure, once gush out oil pump and lubricated oil passageway sealing and fail. The diesel oil is entered the lubricating oil, will make the lubricating oil of diesel engine dilute to go bad. In addition, if the water jacket has crackle or has air vents of sand holes, making the cooling water permeate through the engine oil will make the engine oil rare. Can check the upper part jar covers of the diesel engine on upper level, pneumatic valve organization, jar and ...

The bent axle is ablated, mainly fail to form and lubricate the oil film effectively among journal and axle bush of the bent axle, make journal and axle bush of the bent axle rub directly. When it is ablated that the bent axle happens in the diesel engine, will emit the metal and strike the different noise in spite of white smoke, will even cause bent axle and axle bush to embrace and die together and unable to rotate. So, must analyze and judge correctly to the reason why its trouble produce. A engine oil quality is bad 1Engine oil quality is inferior. Credit rating and viscosity of engine ...

5 bent axle main journal, connecting rod journal shape measurement exceed difference The main journal, connecting rod journal or main bearing hole, connecting rod major part hole cylinder degree or conical degree of cylinder block of bent axle are poor and relatively great, will make journal and axle bush interval intermittent disconnected Or take the form of awl. Can't guarantee to form the better lubricated oil film. The diesel engine is put into duration non- long in the new machine or after overhauling, the above-mentioned phenomenon incident, can measure journal size. If the journal ...