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introduction： Hub bearings for cars[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]In the past, the most common was the use of single row tapered roller or ball bearings in pairs。With the development of technology，Car wheel hub units have been widely used in cars。The range and usage of wheel bearing units are increasing，It has now reached the third generation：The first generation was made up of double column angles
2015-02-23 Reading quantity 1525
introduction：FAGImported bearing[Imported bearing:Simply put, the import bearing agent refers to the sale of an imported bearing brand。The main brands of imported bearings arenskbearing，ikobearing，fagbearing，Of good quality，Of course, the price is not cheap。]The fault diagnosis technology mainly includes vibration diagnosis technology、Ferrography diagnostic technique、Temperature diagnostic technique、Acoustic diagnostic technique、Oil film resistance diagnostic technology and optical fiber monitoring diagnostic technology，among，Vibration、Iron shop、Temperature diagnosis technology is widely used。 one、Vibration diagnosis technique FAGImported bearing[Imported bearing:Simply put, imported bearing agent refers to engaging in a certain
2015-02-23 Reading quantity 1440
introduction：Deep groove ball bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。] The most representative rolling bearings，versatile，Can withstand radial load and two-way axial load。Suitable for high speed rotation and low noise requirement、The sealed bearing with steel dust cover or rubber seal ring is pre-filled with appropriate grease for low vibration occasions，Outer band
2015-02-23 Reading quantity 1455
introduction：1.scratch(Two-body abrasive wear) The hard particles moving with the shaft diameter are in contact with the friction surface，This is because the contact stress between the particles and the metal surface is low，They mark the surface of the bearing shell in a linear pattern；The hard particles partially embedded in the bearing surface will also mark linear scars on the bearing diameter surface，Both are called scratches。Scratches are two-body abrasive wear，The direction of the linear wound is consistent with the direction of the shaft diameter。 Oil film rupture，The hub peak on the axle diameter surface will also scratch the bushing，There are a lot of linear scars，It is also two-body abrasive wear。 Hard particles are embedded in the bearing surface and fall off，A scratch that causes a punctate injury。 Above particles
2015-02-23 Reading quantity 1448
introduction： Electric forklift truck should consider the adaptation performance of the vehicle 1、The actual lifting weight that varies with the center distance of the load and the lifting height，Load center distance and lifting height, etc； 2、Dynamic capacity（Operating speed at full or no load、Lifting speed、Traction and grade），Energy type and energy consumption, etc； 3、Frame structure and height，Pass height with top guard； 4、Man-machine relationship，viv、noise、Operating comfort，Walking or riding or standing
2015-02-23 Reading quantity 2884
introduction：Abstract：Ground source heat pumps use water and ground energy（Underground water、Soil or surface water）The cold and heat exchange is used as the cold and heat source of the water source heat pump，Winter takes the heat out of the ground"take"Come out，Provide indoor heating，Temporal energy"Heat source"；Take the heat out of the house in summer，Release to groundwater、In soil or surface water，Temporal energy"Cold source"。Have energy saving、Economy and environmental protection、Safe and reliable、Automatic operation and other advantages。 keyword：Ground source heat pump Cold and heat source Energy utilization coefficient 1.Definition and principle of heat pump In our country《Hvac terminology standard（GB501
2015-02-23 Reading quantity 2882
introduction： What is it？ UseDesignLogic，Engineers can quickly embed design knowledge and engineering rules into their systems NX Model data to go，Compared with the traditional parametric system，It allows engineers to build higher-level design intent into the model data。Such as，The diameter of the drive shaft can be determined by the desired torque conversion and material specification。The rules for calculating the size of the drive shaft can be built directly into the model，Automatic recalculation when requirements change，This allows the companys best practices to be incorporated into the design，Ensure its continuous application。In this way
2015-02-23 Reading quantity 2799
introduction：Currently known chemical elements are100variety，There are about 20 kinds of chemical elements that can be encountered in steel materials commonly used in industry。For people in the practice of long-term struggle against corrosion phenomenon of stainless steel this special steel series，There are more than a dozen of the most commonly used elements，Except for iron, the basic element that makes up steel，The elements that have the greatest impact on the properties and organization of stainless steel are：carbon、chromium、nickel、manganese、silicon、molybdenum、titanium、niobium、titanium、manganese、nitrogen、copper、Cobalt et al。These elements are decarbonized、silicon、extra-nitrogen，All are transitional group elements in the periodic table。 In fact, the industrial application of stainless steel is at the same time
2015-02-23 Reading quantity 1559
introduction：1.Precision plastic bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。] Precision plastic bearing，Compared with traditional plastic bearings, the precision and tolerance are improved。The inner and outer rings are made of materials suitable for precision machining，Rolling element and cage，On the basis of maintaining the traditional advantages of plastic bearings，Can be applied to precision and comparability
2015-02-23 Reading quantity 1459
introduction： Outer spherical ball bearing[bearing:bearing（“Bearing”，Japanese person“Axial receptor”）It is a part that holds and reduces the friction coefficient of load during mechanical transmission。Can also be said，When other parts move relative to each other on the shaft，A device used to reduce the coefficient of friction during power transmission and to keep the center of the shaft fixed。]It is actually a variant of the deep groove ball bearing，It is characterized by a spherical outer diameter surface of the outer ring，It can be fitted into the corresponding concave sphere of the bearing seat to play the role of aligning。
2015-02-23 Reading quantity 1580
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