(1) Make sure that the hydraulic oil of Rexroth hydraulic pump is clean and prevent debris from entering the oil. Clean the tank thoroughly when changing the oil and filter it when refueling.
(2) Do not paint the inner wall of the oil tank to prevent precipitation in the oil.
(3) In order to prevent air from entering the hydraulic system, the oil return nozzle should be lower than the tank level, and the nozzle should be cut into an inclined plane; The hydraulic pump and the oil suction pipeline should be strictly sealed, the degree of oil absorption should be as low as possible, and the oil absorption resistance should be reduced.
(4) Regularly check the oil level and oil quality.
(5) The temperature of the oil tank shall not exceed the allowable range of the hydraulic oil of Rexroth hydraulic pump. The temperature of the general hydraulic system tank should be controlled below 65, and the temperature of the hydraulic system tank of the machine tool should be controlled below 55, otherwise it should be cooled.
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Disassembly and cleaning steps for Rexroth hydraulic valves
(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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What are the functions of Rexroth relief valves?
1. It plays the role of pressure stabilization and overflow (the valve port is normally open)
In the fixed pump oil inlet or return oil throttling speed control system
2. Safety protection function (valve port normally closed)
Variable pump hydraulic system, fixed pump bypass throttling speed regulation system and non-throttling speed regulation system.
3. The effect of anti-load
4、 ...
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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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Troubleshooting and precautions for Rexroth hydraulic pump (vane pump).
Rexroth hydraulic pump is mainly divided into three types: piston pump, gear pump and vane pump, among which Rexroth vane pump is a special clamp clamping pump body and pump cover, and the outlet direction of the pump can be in any direction of 360 degrees, which is easy to install and use. The bearing assembly of the sand pump is made of cylindrical structure, ...
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Rexroth launches the new linear module SMS
● Five pre-configured sizes: 30-120 mm
● Optional compact motor accessories
● Order online and deliver in stock
The new linear axes are suitable for handling cost-sensitive small parts and can be used as an alternative to complex pneumatic solutions. (Image source: Bosch Rexroth Co., Ltd.)
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The solution to the forward rush of the throttle speed control valve of Rexroth vane pump
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, and by adjusting the damping size, the Rexroth blades ...
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What are the differences between Rexroth proportional valves and Rexroth servo valves?
First of all, there are no strict regulations and explanations for the difference between Rexroth proportional valves and Rexroth servo valves, which is the main reason why most people do not understand the difference between the two.
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Rexroth inverter common faults and solutions
Power outage handling
If the power supply is instantaneously blacked out or the voltage drops to show "undervoltage", or the instantaneous overvoltage shows "overvoltage", it will cause the Rexroth inverter to trip and shut down, and it will be restarted only after the power supply returns to normal.
External fault handling
If you enter ...
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Bosch Rexroth and Weifu Group have joined forces to form a joint venture
Bosch Rexroth Co., Ltd. ("Bosch Rexroth") and Wuxi Weifu High-Tech Group Co., Ltd. ("Weifu Group"), located in Wuxi, Jiangsu Province, China, plan to cooperate to establish a joint venture that aims to combine the strengths of both companies and create a joint venture for ...
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Rexroth variable piston pump displacement control mode
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 hydraulic pumps – the scope of application of hydraulic pumps
1. In the mining and metallurgical industry, the pump is also the most used equipment. Mines need to be drained by pumps, and in the process of beneficiation, smelting and rolling, pumps are needed to supply water first.
2. In the power sector, nuclear power plants need nuclear main pumps, secondary pumps, tertiary pumps, thermal power plants need a large number of boilers ...
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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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Rexroth hydraulic pumps - precautions for the use of hydraulic pumps
1. When the hydraulic pump is started, it should be jogged several times, and after the oil flow direction and sound are normal, it should run under low pressure for 5-10min, and then put into normal operation. Before the piston pump is started, the pump must be filled with clean working oil through the oil drain port on the casing.
2. The viscosity of the oil is affected by the temperature ...
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Precautions for Rexroth pressure reducing valves
1. For easy operation and maintenance, the valve is generally installed upright on the horizontal pipeline.
2. The installation of the pressure reducing valve must be in strict accordance with the direction of the arrow on the valve body and keep it consistent with the direction of fluid flow. If the water quality is not clean and contains some impurities, it must be installed at the upstream inlet of the pressure reducing valve ...
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Rexroth hydraulic pumps - classification and structural features of gear pumps
1. According to the form of gear meshing, it can be divided into: external meshing and internal meshing
2. According to the tooth shape curve, it can be divided into: involute tooth form and cycloidal type
3. According to the form of the tooth surface, it can be divided into: spur gear type, helical gear type, herringbone gear type, arc tooth surface gear type
4. Press ...
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Rexroth oil pump cartridge replacement operation
Rexroth oil pump is a hydraulic system that converts the mechanical energy of the prime mover (motor, internal combustion engine, etc.) into liquid pressure energy.
Rexroth oil pumps can be divided into two types: positive displacement and non-volumetric type. The non-volumetric type has centrifugal pumps, axial flow pumps, etc., and uses high-speed rotating impellers to produce true ...
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The working characteristics and working principle of Rexroth hydraulic motors
Working characteristics of Rexroth hydraulic motors
1. Under normal working conditions, the inlet and outlet pressures of the hydraulic motor are higher than the atmospheric pressure, so there will be no suction performance problems like the hydraulic pump. However, if the hydraulic motor can work under the conditions of the pump, its oil inlet should be low.
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How to select Rexroth solenoid valve and its selection points
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...
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How to choose Rexroth guide rails?
1. Determine the use of Tiaohua
Determine the necessary conditions in order to calculate the loads acting on the linear guide
2. Choose the right type
Select the type that meets the criteria and pre-select the possible specifications
3. Calculate the applied load
Calculate the ...
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Rexroth hydraulic pump - gear pump common problems and solutions
1. Trapped oil
(1) Causes
The trapped oil of the gear pump is caused by the overlap coefficient of the gear design, as shown in the figure below, assuming that the length of the meshing line of the gear in the actual meshing is l and the tooth pitch is t0, then the overlap coefficient of the gear meshing is ε=l/t0. This overlap coefficient has such a ...
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