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introduction：one、Electric erosion The electrical erosion of linear bearings is due to electrical leakage from the motor or electrical appliances，Electric sparks are generated between the friction surfaces of linear bearings，Cause spot marks on the friction surface，The characteristic is that the damage occurs repeatedly on the hard journal surface。 two、cavitation Cavitation of linear bearing is a form of surface damage caused by contact between solid surface and liquid and relative movement。When the oil is in the low pressure area of the oil film，Bubbles form in the oil，After the bubble moves to the high pressure area，Bubbles collapse under pressure，Great impact and high temperature at the moment of collapse，The solid surface under the repeated action of this impact force，The material falls off under fatigue，Make small pits on the friction surface，It develops into a spongy scar。Heavy load、High speed，And the load and speed change in the sliding bearing，Cavitation often occurs。
2018-09-19 Reading quantity 470
introduction：How to use universal coupling？
2018-09-19 Reading quantity 325
introduction：The first is the incorrect installation，Using brute force when we set it up，Using something hard to hit the bearing directly on the ceramic bearing damage，It is the main cause of its deformation；The second is poor lubrication，According to observation，Poor lubrication is one of the main reasons for premature damage of ceramic bearing。There is also the failure to fill the lubricant or lubricating oil in time。The lubricant or lubricating oil is not filled properly；Improper selection of lubricant or lubricating oil；Incorrect lubrication and so on；The third is pollution，Pollution can also cause premature damage to ceramic bearings，Unpack bearings too early before use，Cause pollution，There is also due to the installation of the working environment is not clean，Cause pollution；The latter point is the long-term overload operation of ceramic bearings，Late maintenance，Improper maintenance，Equipment aging。
2018-09-18 Reading quantity 243
introduction：The limit switch has many applications，It is found in many electrical appliances。So what does such a simple switch do？It mainly plays a role of chain protection。Common examples are in washing machines and tape recorders（Video recorder）The application of。 Dehydration in the washing machine（Spin dry）In the process, the speed is very high，If someone neglects to open the washing machine door or cover at this time，Put your hand in there again，Its easy to hurt people，To avoid this kind of accident，An electrical contact is fitted to the door or cover of the washing machine，As soon as someone opens the washing machine door or lid，Automatically shut off the motor，Even by mechanical means，Make a door or cover open immediately“brake”，Force the moving parts to stop，To avoid personal injury。
2018-09-17 Reading quantity 300
introduction：Principle of servo motor
2018-09-15 Reading quantity 603
introduction：First step：What is high power DC power supply? The high power DC power supply is continuously adjustable using a single chip microcomputer、No need to cut off the load online regulationDCPower source，Generally use primary single-chip microcomputer to do the core components，Its output current、voltage、Protection value、Boost with load、upwelling、decompression、downdraft、Short-circuit test、Transient overvoltage、Transient current and other tests，More functions，The operation is relatively simple，Power is generally in10-150Aaround，Yes develop、experiment、The main instrument for testing on-line equipment。
2018-09-15 Reading quantity 297
introduction：Photoelectric switch(Also known as photoelectric sensor)Its an photoelectric proximity switch，It is used to detect whether the object has a blockage or a reflection of the synchronous loop on the beam。Objects are not limited to metal，All reflection objects can be detected。 Proximity switches for industrial automation control systems(Also known as proximity sensor)，For detection、The control and output links have no integral contact model conversion element。When the switch is near an object，It generates a control signal。Proximity switch，Also known as contactless travel switch，It can complete stroke control and limit protection or non-contact detection devices，Used to detect the size and speed of parts，It can also be used for frequency meters，Frequency pulse generator、Automatic convergence of liquid level control and machining procedures。
2018-09-14 Reading quantity 205
introduction：Stainless steel bearing ring and rolling material for use440CStainless steel（Domestic brand：9Cr18Mo、9Cr18）After vacuum quenching and tempering treatment，Cage and sealing ring skeleton material304Stainless steel（Domestic brand：0Cr18Ni9）。Stainless steel bearing compared with ordinary bearing steel，It has stronger rust protection、Corrosion resistance，Choose the right lubricant、Dust cover，Can be in-60℃~+300℃The environment is used。Stainless steel deep groove ball bearings can resist corrosion caused by moisture and several other media。
2018-09-12 Reading quantity 258
introduction：Low-voltage circuit breakers are widely used in building low-voltage distribution systems，It is a protective electrical component，With open circuit protection、Overload protection、Control and isolation functions，Suitable for industrial and civil building terminal low-voltage distribution system。The low-voltage circuit breaker is improperly designed in the distribution system，Guihui Ying The normal operation of the power supply circuit。therefore，When designing a low-voltage distribution system，Attention should be paid to the details of the selectivity and cascade protection of low-voltage circuit breakers。 Low voltage circuit breaker selectivity。To ensure the reliability of low-voltage power distribution system，The selectivity of low voltage circuit breaker has become an important content in the design of terminal low voltage distribution system。
2018-09-12 Reading quantity 373
introduction：Needle roller bearings are roller bearings with cylindrical rollers
2018-09-11 Reading quantity 473
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