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When working under high pressure, except the needle penetration is small，It also has high oil film strength and extreme pressure performance。When choosing grease according to environmental conditions，Calcium-based greases do not dissolve easily in water，Suitable for dry and less moisture environment。 Oil lubrication： At high speed、Under high temperature conditions，Oil lubrication can be used when grease lubrication is no longer suitable。Through the circulation of lubricating oil，It takes away a lot of heat。 Viscosity is an important characteristic of lubricating oil，The size of the viscosity directly affects the fluidity of the lubricating oil and the thickness of the oil film formed between the friction surfaces，The viscosity of lubricating oil at the operating temperature of the bearing is generally12-15cst。The higher the speed, the lower the viscosity，The heavier the load, the higher the viscosity should be selected。Commonly used lubricants are machine oil、High speed machine oil、Turbine oil、Compres
Dc motor governor。Pulse width modulation：Pulse WidthModulator、For shortPWM、The DC motor governor is the device that regulates the speed of the DC motor， Because the DC motor has the characteristics of low speed and high torque，It can not be replaced by AC motor， Thus regulating the speed of the DC motor equipment—Dc governor，Because of its special properties、It is often used in DC load circuits、Lighting dimming or DC motor speed regulation、HW-1020v-governor、Using pulse width modulation(PWM)Principle of the production of motor governor、PWMThe governor is already here：Industrial DC motor speed regulation、Industrial conveyor belt speed regulation、Lighting mediation、Computer power cooling、Dc fan, etc、Be widely used。 Working principle： HW-A-1020type(DC12v24vVoltage universal)governor、Working principle:By changing the duty cycle of the outgoing square wave, the average current power on the load is changed from0-100%change、Thereby changing the load、Light intensity/Motor speed。Using pulse width modulation(PWM)wa
fagImported deep groove ball bearings Deep groove ball bearing is a common type of rolling bearing。The basic type of deep groove ball bearing consists of an outer ring，An inner ring、A set of steel balls and a set of cages。 Deep groove ball bearing types are single row and double row two，The deep groove ball structure is also divided into two kinds of sealed and open structures。
Mechanical rodless cylinder working principle Mechanical rodless cylinder refers to the use of piston directly or indirectly connected to the external actuator，And make it follow the piston to achieve reciprocating movement of the cylinder。The big advantage of this type of cylinder is that it saves installation space，Divided into magnetic couple rodless cylinder（Magnetic cylinder）With mechanical rodless cylinders。The following Xiaobian will take you to understand how it works：
（1）Traditional restoration mode： a、Brush plating。Can handle a small amount of wear on shaft parts，Great limitation，The thicker the brush coating, the easier it is to flake off。 b、surfacing。For bearingThe traditional method of parts wear is repair welding，But due to the material of the dryer，In surfacing welding, white cracks often appear at the welding joints，Moreover, large area repair welding of shaft is easy to cause thermal stress deformation，Causing the shaft to bend and tilt，Or break from the shoulder position，Causing the entire shaft to fail。 c、spray。The bonding force between thermal spraying coating and substrate technology is mainly mechanical chimeric，Therefore, the impact resistance of the coating is poor，Can not effectively resist the impact force of the dryer during operation。Moreover, the coating has certain porosity，In addition, dust is produced during the spraying process、Toxic metallic vapor、Thermal radiation、Noise and other pollution；Interference with construction personnel and construction
Stepper motor is a digital control motor，It converts the pulse signal into an angular shift，Give a pulse signal，The stepper motor turns at an Angle，Therefore, it is very suitable for MCU control。Stepper motorCan be divided into reactive stepping motor（For shortVR）、Permanent magnet stepper motor（For shortPM）And hybrid stepper motor（For shortHB）。 There is no difference between the internal mechanism of two-phase stepper motor and four-phase stepper motor，Its just the way the internal leads are wired。Two-phase motor lead is4The root，The lead wire of a four-phase motor can be5The root，Can also be6The root。besides，There is no difference in appearance。
JTRLinear bearing Linear bearing is a linear motion system，Used in combination with linear travel and cylindrical shaft。Linear bearings are more and more widely used in electronic equipment、Food machinery、Packaging machinery、Medical machinery、Printing machinery、Textile machinery、machine、instrument、Robot、Tool machinery、Numerical control machine tool、Automotive and digital three-dimensional coordinate measuring equipment and other precision equipment or special machinery industry。Due to the variability of the application industry，Its form is also a lot of the following Xiaobian will take you to understand the Feng YeJTRHow to classify linear bearings：
The seal of the bearing can be divided into two categories: built-in seal and external seal。The so-called bearing seal is to manufacture the bearing itself into a device with sealing performance。E.g. bearingWith dust cover、Seal ring。This seal takes up very little space，Easy to install and disassemble，The cost is also relatively low。 The so-called bearing plus seal performance device，It is a sealing device with various properties that is manufactured inside the installation end cover and so on。 The following main factors should be considered in the selection of bearing external seals： 1.Bearing lubricants and types(Greases and lubricants)； 2.Working environment of bearings，The size of the occupied space； 3.The supporting structure of the shaft： The seal of the bearing can be divided into two categories: built-in seal and external seal。The so-called bearing seal is to manufacture the bearing itself into a device with sealing performance。Such as bearing with dust cover、Seal ring。This seal takes up
Linear moduleIt is a linear transmission device，There are two main ways。One is composed of ball screw and linear guide rail，The other is composed of synchronous belt and synchronous belt wheel。It has a wide range of use，Easy to install，High precision，It is accepted by the majority of users！It eliminates the need to create its own linear motion mechanism。 Linear module（ linear unite）It is a general term for devices that can achieve linear motion in the field of automation industry，Also known as positioning module。Linear modules can be considered as mechanical engineers through the transformation of machinery and mechanical development，Share experiences and exchange knowledge with each other，The result is a universally used intellectual product。
Isolation transformer(Isolation transformer)Safety transformer，It refers to a transformer with electrical isolation between the input winding and the output winding，A transformer used to electrically isolate two or more coupled circuits。Isolation transformers are generally used for machine maintenance、upkeep，cover、Lightning protection、Filtering action，To avoid accidentally touching charged bodies at the same time，The transformer isolates the current of the original secondary winding coil。Isolation transformers were early used in the power industry in European countries，Widely used in electronics industry or industrial and mining enterprises，Control power for general circuits in machine tools and mechanical equipment，Power supply for safety lighting and indicators。
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