The first step is the debugging of the zero position in the no-load state Most of the servo valves on construction machinery are used in conjunction with the reversing valve to achieve the purpose of controlling the hydraulic system. The servo valve plug-in can be unplugged on the site to prevent the servo valve from being energized and make it in a no-load state. Then, a manual or electric directional valve, ...

The first step is the debugging of the zero position in the no-load state Most of the servo valves on construction machinery are used in conjunction with the reversing valve to achieve the purpose of controlling the hydraulic system. The servo valve plug-in can be unplugged on the site to prevent the servo valve from being energized and make it in a no-load state. Then, a manual or electric directional valve, ...

1) Cannot be opened or closed normally 1. Check the power supply and make sure the voltage and frequency are correct. Also check the connection. 2. Check whether there is dirt, corrosion underneath, and the coil will not burn out or lose components. 3. Check whether the flow direction is related to the indicator on the valve body or with the valve ...

1) Coil problem Use a voltmeter to measure the voltage across the coil. This should help you determine if the coil is working properly. You can also gently pull the coil to feel if there is a magnetic force acting on it. If it proves difficult to pull, the coil generates a magnetic field, which creates an excitation.

1. Characteristics of the medium 1) Different varieties of solenoid valves are selected for gas, liquid or mixed state; 2) The medium temperature is different for products of different specifications, otherwise the coil will burn off, the seal will age, and the life of the product will be seriously affected; 3) The viscosity of the medium, usually below 50cSt. If...

1) The maximum and minimum temperature of the environment should be selected within the allowable range; 2) When the relative humidity in the environment is high and there are water droplets and rain, waterproof solenoid valves should be selected; 3) Special varieties should be selected for occasions such as vibration, bumps and shocks in the environment, such as marine solenoid valves; ...

1) According to the type of power supply, AC and DC solenoid valves are selected respectively. In general, AC power is easily accessible; 2) AC220V.DC24V is preferred for voltage specifications; 3) The power supply voltage fluctuation is usually +%10%.-15% for AC, and about ±%10 for DC allowable ...

1. Select the solenoid valve according to the pipeline parameters: the diameter specification (i.e., DN) and the interface mode 1) determine the diameter (DN) size according to the on-site pipeline inner diameter size or flow requirements; 2) Interface mode, generally > DN50 to choose the flange interface, ≤ DN50 can be freely selected according to the user's needs. ...

1) If the cylinder body is inlaid with copper sleeve, it can be repaired by replacing the copper sleeve. First of all, trim the diameter of a set of plunger rods to a uniform size, and then polish the outer diameter with sandpaper of more than 1000#. There are three ways to install copper sleeves in the cylinder block: (a) Heating and hot charging of the cylinder block or low-temperature freezing and extrusion of the copper sleeve, interference ...

(1) Disassembly. For hydraulic valves, although most of the parts are connected by bolts, the hydraulic valve is not disassembled when designed, and if it is forcibly disassembled due to lack of special equipment or lack of professional technology, it may lead to damage to the hydraulic valve. ...

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1. Direct-acting solenoid valve Principle: When the normally closed type is energized, the electromagnetic coil generates electromagnetic force to lift the open part from the valve seat and open the valve; When the power is off, the electromagnetic force disappears, the spring presses the opening on the valve seat, and the valve is open. Features: In vacuum, negative pressure, zero pressure ...

1. Select the solenoid valve according to the pipeline parameters: diameter specification (i.e., DN) and interface mode 1. Determine the diameter (DN) size according to the inner diameter size or flow requirements of the on-site pipeline. 2. Interface mode, generally DN50 to choose flange interface, DN50 can be freely selected according to user needs...

1) Piston pumps are generally used in the hydraulic transmission systems of machine tools, metallurgy, forging, mining and hoisting machinery, and are especially widely used in high-power hydraulic transmission systems. 2) REXROTH vane pumps are generally used in mining, coal, metallurgy, chemical industry, environmental protection and other industries. One...

1. Rexroth hydraulic piston pump A10VsO series: A10VsO18, A10VsO28, A10VsO45, A10VsO71, A10VsO100, A10VsO140 2. Rexroth hydraulic piston pump A10VO series: A10VO28, A10VO45, A10VO71, A10VO100, A10VO140 3 ...

1. Water will corrode the oil pump, so it is forbidden to use the oil pump to vacuum the substance containing water. 2. For substances containing a large amount of solvent, remove most of the solvent in the oven first, and then use an oil pump to vacuum. 3. Use the vacuum pump in the correct order to prevent suck-back. ...

1. Loosen and remove the connecting screws on the pump cover and bearing end cover. 2. Remove the positioning pin, pump cover and bearing cover. 3. Take out the transmission shaft and shaft sleeve from the housing of the pump. 4. Take out the two gears from the casing of the pump. 5. Remove the floating side plate and sealing ring ...

1. Check the internal leakage of the boom cylinder. The easiest way to do this is to raise the boom and see if it has a noticeable free descent. If the drop is obvious, disassemble the cylinder for inspection, and replace the sealing ring if it is worn; 2. Check the control valve. First of all, clean the safety valve and check whether the valve core is grinding.

(1) The electrical signal is easy to transmit, and the remote control can be easily realized. (2) It can continuously and proportionally control the pressure and flow of the hydraulic system, realize the control of the position, speed and force of the actuator, and reduce the impact when the pressure changes. （3） ...

Thanks to the die pad function of the new standard IH04 E standard module from Bosch Rexroth, engineers can use the most common switching systems. These modules are DGUV-tested and certified with a standardized safety concept and are able to meet general safety requirements at the lowest possible cost. Users can optionally set such ...