Analysis of common failures of Rexroth piston pumps

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1. The output flow of the hydraulic pump is insufficient or does not output oil Piston pumps often suffer from insufficient suction, excessive leakage, or too small an inclination angle. The insufficient suction volume is mainly caused by the high resistance of the suction pipe or the insufficient oil replenishment, such as the pump speed is too fast and the oil level is too low; Excessive leakage ...

1) Flow regulation Port X is connected to the oil tank to relieve pressure, and port B is closed, and the pressure reaches the required pressure by rotating the adjusting screw on the FR of the flow control valve, and the general FR setting value is between 14 Bar and 22 Bar 2) Highest pressure regulation Close the flow control valve FR and block the B...

1. The filter on the suction pipeline is blocked; 2. The oil level of the hydraulic oil tank is too low; 3. The R angle of the variable mechanism is too small, so that the flow rate is too small, and the influence of internal leakage is added, so it cannot continuously supply pressure oil to the outside world; 4. The strain between the oil distribution pan and the contact surface of the cylinder block is serious, and it is not sealed or ...

1. Check whether the piston pump is damaged and corroded, and replace it if so. 2. Check the fit of the plunger pair. Insert the end of the plunger into the plunger sleeve, tilt it about 60°, and if the plunger can slide slowly under its own action, it will fit well. 3. Check the tightness of the plunger pair. Use...

1. Poor assembly of Rexroth hydraulic pump leads to abnormal heating of the hydraulic pump 1. The courtyard of Litule hydraulic pump is not suitable, (for example, the plunger and cylinder, blade and rotor groove, sperm and rotor, gear, side plate, etc. are too small, and the sliding part may be overheated.) 2. The installation of Rexroth hydraulic pump ...

First, the characteristics of the solenoid valve: 1) Rexroth solenoid valve, solenoid valve and all stainless steel; For highly corrosive media, the diaphragm type must be selected. Neutral medium, it is also advisable to choose copper alloy as the solenoid valve housing material, otherwise, there are often rust chips falling off in the valve housing, especially the action is infrequent ...

1. Daily maintenance 1) Strictly implement the post operation method and carefully fill in the operation records. 2) Check the bearing temperature and oil pressure regularly; Check the level height of the lubricating oil every shift. 3) Check whether there is leakage in the sealing part once per shift. 4) Do a good job in each shift ...

1) Remove the protective covers on both sides of the flange end, and rinse and clean the valve when the valve is fully open. 2) Before the installation of the balance valve with actuator, the whole machine should be tested according to the specified signal (electricity or gas) (to prevent the vibration caused by transportation from affecting the performance).

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; ...

A10VSO series: A10VSO18, A10VSO28, A10VSO45, A10VSO71, A10VSO100, A10VSO140 A10VO series: A10VO28, A10VO45, A10VO71, A10VO100, A10VO140 A2F series: A2F10, A2F12, A2F28, A2F45, A2F...

Power condition 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% AC, and the power supply voltage fluctuation is usually +%10%.-15%.

1. Hydraulic pump: Straight shaft swash plate piston pumps are divided into two types: pressure oil supply type and self-priming oil type. Most of the pressure oil supply hydraulic pumps use oil tanks with air pressure, and there are also hydraulic pumps with oil replenishment sub-pumps to provide pressure oil to the oil inlet of the hydraulic pump. The self-priming oil energy of the self-priming hydraulic pump ...

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Step 1: Disassemble the proportional valve Unscrew the nut and slide out of the coil to remove the coil from the proportional end. Use a wrench to loosen and remove the tube. Remove the spring and slide the hex wrench from the tube. Then remove the spool from the valve. Step 2: Check the ...

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 ...

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1. Guiding ideology: 1. The pressure depends on the load oil pump, and the output pressure is inversely proportional to the flow rate. In the state of electronic control, when the external load increases, the system pressure increases, when the system pressure increases, the pressure of the front pump oil flow and the rear pump oil flow into the rear pump increases, and the computer detects the ...

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...