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introduction：Rolling 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 clearance is an important indicator，Directly affect the bearing performance，According to the service conditions of the bearing，Choose the right clearance，It is of great significance。In the selection of bearing clearance，The following factors should be fully taken into account： 1、The tightness of the bearing with the shaft and housing holes
2015-01-12 Reading quantity 1459
introduction：Balance Through reasonable distribution of mass in each moving part﹐A measure to eliminate or reduce vibration caused by inertial forces during mechanical operation。The problem of balance arose with the advent of rapidly rotating machinery﹐And with the steam turbine﹑dynamo﹑motor﹑Centrifugal pump﹑Compressors and gyroscopes became more and more prominent﹐So it is an important problem in the study of mechanical dynamics。 On a rotor that rotates around a fixed axis﹐The centrifugal inertia forces of each particle form a space force system﹐Simplify them to any point according to mechanics﹐A centrifugal inertia force can be obtainedF And an inertial couple。This centrifugal inertia
2015-01-12 Reading quantity 2807
introduction：As everyone knowsTIMKENbearing[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。]Sales of、Quality、Quality is in the forefront of the world，Has its professional production line，After a strict process of factory inspection，Sold all over the world，To support the industrial development of the world。The quality of bearings is the most important basis for winning market recognition
2015-01-12 Reading quantity 1555
introduction： Performance of the forward electric forklift 1、Rear cover for easy handling，The components can be easily repaired and adjusted，optional：High back，Full free lift gantry，Straddle design，Double scissors stretch forearm。 2、Alternating current motor，No need to replace the carbon brush，It has good slope starting ability，Hydraulic steering system，Flexible and light steering； 3、Install adjustable handrails，ADAPTS to drivers of different heights，Multi-function display meter with power display、Fault code display、Working time cumulative display and speed
2015-01-12 Reading quantity 2905
introduction： NSKbearing[NSKbearing:Seiko Co., LTD（NSK LTD.）Be established in1916years，It is the first manufacturer to design and produce bearings in Japan。NSKThe function of the bearing fit is to makeNSKThe stationary ring and rotating ring of the bearing are respectively the stationary part of the installation part(Usually a bearing seat)And rotating part(Usually an axis)Solidify together，Thus, the basic tasks of transferring the load in the rotating state and defining the position of the moving system relative to the stationary system are realized。]The stripping damage is when the bearing is rotating under load，The raceway surface or rolling surface of the inner and outer rings appears fish due to rolling fatigue
2015-01-12 Reading quantity 1452
introduction：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。]Part working surface and core in condition、Structural and performance requirements are quite different,The overall heat treatment often makes the two cannot be taken into account,The potential of materials is also underutilized。Applied material surface strengthening technology can not only better solve the surface and the core in terms of structure and requirements
2015-01-12 Reading quantity 1535
introduction：KOYOThe circumferential surface of the bearing ring should be well supported and stressed evenly，To reduce deformation，And can give full play to high temperature bearings[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。]Carrying capacity of。The ring shall not slide in the tangential direction in its mating surface，Otherwise, the mating surface will be damaged。The free end bearing must be able to adapt to changes in the length of the shaft and bearing seat holes
2015-01-12 Reading quantity 1460
introduction：Polymer material molding processing technology is one of the signs of a countrys economic development。Because ultimately reflects the role of the material is the variety of its products、Quantity and quality，Materials only through various molding processing means，Form the final product（product），To reflect its function and value。And new material、New product、The emergence of new technologies depends in a sense on the breakthrough of molding processing technology and molding processing machinery。 Injection molding is an important method of plastic product molding。Almost all thermoplastics、A variety of thermosetting plastics and rubbers can be formed in this way。In China，At present, injection molding products account for about plastic
2015-01-12 Reading quantity 2808
introduction：Crankshaft ablation，The main reason is that there is no effective lubricating film between the crankshaft journal and the bearing shell，The crankshaft journal is caused by direct friction with the bearing bush。When crankshaft ablation occurs in diesel engine，White smoke will come out，There was a metallic banging noise，It can even cause the crankshaft and the bearing to be locked together and unable to turn。therefore，The cause of its failure must be analyzed and judged correctly。 1Poor oil quality 1)Poor quality oil。The selected oil quality grade and viscosity grade are low，Or different grades of oil blending use，Resulting in oil performance can not meet the requirements；A lot of dust is mixed in the oil during use，
2015-01-12 Reading quantity 1551
introduction：0 introduction Due to the influence of various factors，The working medium of the hydraulic system is inevitably polluted，They are mostly solid particles、air、water、microorganism、chemical、Radiation、Static electricity、Heat energy、Magnetic scheduling，Solid particles are the main source of pollution，The presence of these pollutants seriously affects the performance of hydraulic systems and components、Service life and reliability。therefore，Control or reduce the degree of contamination of hydraulic system oil is designed and manufactured、The use of maintenance hydraulic system in each link can not be ignored content，Improving the pollution tolerance of hydraulic components is also an important aspect to ensure the reliable operation of hydraulic systems
2015-01-12 Reading quantity 2785
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