1. Adopt the correct Rexroth vane pump speed conversion method, the conversion mode of the solenoid valve, the impact is larger, the conversion accuracy is lower, the reliability is poor, but the control flexibility is large;
2. The electro-hydraulic reversing valve uses a current valve with damping, which slows down the speed conversion of Rexroth vane pump by adjusting the damping size, which can reduce the forward rush to a certain extent, and the impact of Rexroth vane pump is smaller when converted with a stroke valve;
3. Experience has proved that if the stroke baffle is made into two angles with 30, the inclined plane presses down 2/3 of the stroke valve opening with 10, and the inclined plane presses the remaining 1/3 opening, the effect is better;
4. Or open a small triangular groove of 1-2mm long at the transition port of the stroke valve core, which can also alleviate the impact of fast forward to work, the conversion accuracy of the stroke valve is high, the reliability is good, but the control flexibility is small, the pipeline is more complex, and the overstep action in the process of work is difficult to achieve;
5. When the oil supply circuit of Rexroth vane pump is fast forwarding, use a solenoid valve to unload the high-flow pump in advance, and then transfer to work after deceleration;
6. When throttling at the outlet, improve the sensitivity of the differential pressure reducing valve in the speed control valve, or disassemble and repair the Rexroth vane pump pressure reducing valve and take measures such as deburring and cleaning to make its movement flexible.
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Rexroth hydraulic pump - maintenance method of gear pump
1. Frequent grease, the electric oil drum pump is running at high speed, and the grease is easy to volatilize, so it is necessary to keep the lubrication at the bearing clean and pay attention to the replacement.
2. Pay attention to the storage of the electric pumping pump should be placed in a dry, clean and no corrosive gas environment.
3. Gear oil ...
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Rexroth Hydraulic Pump - Introduction to Hydraulic Piston Pump and How to Maintain It
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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WAGO Rexroth has teamed up to create the ctrlX OS
Future-proof digitalization and automation technologies must be open, flexible, easily scalable, and secure at the same time. Whether it's mechanical and systems engineering, building and energy automation, the convergence of IT and OT applications is strongly supported and promoted by industry players. As the first system ...
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What are the relevant applications for Rexroth vane pumps?
Rexroth vane pump speed selection
Rexroth vane pump flow rate and speed linear relationship, relative to low speed screw pump, high speed screw pump can increase the flow and head, but the power is significantly increased, high speed accelerates the wear between the rotor and the stator, must make the screw ...
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Common problems and solutions of Rexroth hydraulic pumps
1. The pump does not absorb oil, the flow rate is not enough, the pump is empty, and the pump is damaged.
Damaged pumps, damaged skates or damaged ski and column ball joint seals; swash plate wear; wear of plungers and cylinder bores; failure of variable mechanisms; Wear of the oil distribution pan or wear of the oil distribution end face of the cylinder block; The LS valve of the pump is worn, the pressure is cut off...
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Bosch Rexroth appeared at the 2020 Industry Fair
From September 15th to 19th, the 22nd China International Industry Fair was held as scheduled at the National Convention and Exhibition Center. Bosch Rexroth, a leading practitioner and supplier of Industry 4.0, presents 6.1 with the classical value stream of the factory of the future and the innovative automation platform ctrlXAUTOMATION with the theme of the future, using the present.
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A higher level of openness and freedom: ctrlX OS
In 2020, Bosch Rexroth took a big step forward on the road to automation openness with the ctrlX AUTOMATION automation automation platform based on the "Industrial Automation Smartphone" concept. In 2021, Bosch Rexroth made the leap from an open platform to an industrial ecosystem. Co-creation ...
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Rexroth Hydraulic Pumps – Gear Pump Common Failures and Their Causes
(1) The pump does not produce oil
First of all, check whether the rotation direction of the gear pump is correct; Secondly, check whether the filter at the inlet end of the gear pump is clogged.
(2) The oil seal is flushed out
(1) The gear pump bearing is subjected to axial force;
(2) The gear pump is subjected to excessive radial force.
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Rexroth pressure reducing valve fault phenomenon and elimination method
Rexroth Pressure Reducing Valve Failure Analysis:
1. Air is mixed into the oil
2. The damping hole is sometimes clogged
3. The roundness of the hole between the slide valve and the valve body exceeds the regulations, so that the valve is stuck
4. The spring is deformed or stuck in the spool valve, making it difficult for the spool to move or the spring is too soft 5.
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How many ways are there to control the displacement of Rexroth variable piston pumps?
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 ...
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Rexroth proportional valve fault repair
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 ...
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Features of Rexroth proportional valves:
(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） ...
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Precautions for the installation of Rexroth pressure reducing valves
1. When installing, the tap water pressure reducing valve should be installed vertically on the tap water pipeline.
2. The arrow on the tap water pressure reducing valve must be consistent with the arrow on the pipeline.
3. The position of the installation of the pressure reduction method must be greater than 4 meters from the valve outlet.
...
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The opening ceremony of the second phase of the Bosch Rexroth plant in Xi'an was a complete success
On November 11, 2020, the opening ceremony of the second phase of Bosch Rexroth (Xi'an) Electronic Drive and Control Co., Ltd. was grandly held. With the completion of the second phase of the project, the Xi'an plant will become the overall supplier of the group's global intelligent manufacturing and industrial automation solutions, and Bosch Rexroth will provide the best solutions for the Chinese market.
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Rexroth Relief Valve - Common Faults and Solutions for Relief Valves
1. Causes of noise and vibration failure of relief valves
The components that are prone to noise in hydraulic devices are generally considered to be pumps and valves, and the valves are mainly relief valves and electromagnetic reversing valves. There are many factors that contribute to noise. There are two types of noise in the relief valve: velocity sound and mechanical sound. The main ...
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Rexroth Hydraulic Pump - Common maintenance knowledge of hydraulic piston pumps
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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The first flushing step of the hydraulic system of the Rexroth Rexroth hydraulic pump
First wash. The first cleaning of the hydraulic system of the Rexroth Rexroth hydraulic pump is carried out after the pre-installation (trial assembly of the pipes) and the dismantling of the entire pipeline.
The first cleaning should ensure that a large number of metal burrs and powders, sand dust, ...
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Applicability of Rexroth solenoid valves
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...
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Precautions for the use of Rexroth piston pumps
1. The installation of the piston pump needs special attention, the direction should not be mistaken, and the direction of the oil filler port should be upward, so that it is more convenient to use in the later stage. And it is necessary to use flexible couplings, which can better avoid any stress generated during the bending process, but the axial error needs to be 0 ...
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How Rexroth hydraulic pumps are adjusted
1) Swash plate axial piston variable pump for open hydraulic rotation circuit
2) Mainly used in the field of mobile machinery
3) The pump works under the condition of self-priming, mailbox pressurization or with built-in suction pump, (centrifugal pump).
4) The output flow rate is proportional to the driving speed, ...
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