Introduction to the features of Rexroth's variable displacement piston pump A4VG series

The flow rate of Rexroth Rexroth oil pump is the product of the gear pump displacement V per revolution and the speed n, if the speed n of the hydraulic pump is too low, the initial force Q will be too small, can not guarantee the oil supply of the system, resulting in the centripetal force is not enough or can not constitute a certain vacuum degree and can not absorb oil. ...

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%.

The classification of proportional valve control mode refers to the classification of the electrical-mechanical conversion mode in the pilot control valve of the proportional valve, and its electrical control part has various forms such as proportional solenoids, torque motors, DC servo motors, etc. (1) Electromagnetic type Electromagnetic type refers to the use of proportional electromagnets.

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. 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 ...

1. Because the action area of the poppet valve is very small, even if the pressure is very high, the spring rate is still not large, and the pressure regulation is light; 2. Because the spring of the main valve is very soft, the excitation fluctuation is small when the overflow volume changes. Good static characteristics; 3. It can adapt to the requirements of different pressure regulation ranges; 4. The main spool adopts ...

1. Quantitative pump + relief valve system This is the most basic and low-cost hydraulic pump system, because the displacement of the pump is fixed, and the output flow is fixed under the condition that the speed of the prime mover is unchanged; A part of the flow drives the load, and the excess flow is returned to the tank through the relief valve, and the overflow ...

(1) Rexroth DBD direct acting relief valve: DBD valve is a direct-acting relief valve, which is used to limit the system pressure, with a total of 7 pressure levels: 2.5, 5, 10, 20, 31.5, 5, 40 and 63Mpa. The types of pressure adjustment are: adjustment handle, adjustment handle with lock, and adjustment screw with protective cover.

Rexroth hydraulic pumps: 1. Most users think of a pump as an element that outputs a flow rate at a certain pressure 2. Hydraulic pumps often work at stable and high speeds 3. Generally, it is required that the pump can output high pressure when the rated speed is saved 4. In some applications, the pump is generally only ...

● 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.)

A10VO series variable piston pump is one of Rexroth variable piston pumps, A10VO series is Rexroth medium pressure series swash plate axial piston pump, nominal pressure 280bar, used in open hydraulic circuits, the pump is very widely used, is used in various fields, including but not limited to...

A6VM200HA2/63W-VAB020A R909604241 　　A6VM160DA1/63W-VZB020B 9604026 　　A6VM160DA3/63W-VZB020B 9604794 　　A6VM160HA2T/63W-VZL020A 　　A6VM160EP2/63W-VZB020B 9604072力士乐Rexr ...

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 ...

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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、 ...

Classification and structural characteristics of Rexroth gear pumps 　　According to the form of gear meshing, it can be divided into external meshing and internal meshing. According to the different tooth curves, it can be divided into: involute and cycloid. According to the surface form, it can be divided into spur gear type, helical gear type, herringbone gear ...

Proportional control valve is a kind of control valve that continuously and proportionally controls the flow, pressure and direction of the hydraulic system according to the input electrical signal, and its output flow and pressure can not be affected by load changes. Compared with ordinary hydraulic components, proportional valves have the following characteristics: （ ...

Analysis of abnormal heating fault of vane pump: 1. The oil temperature is too high 2. The oil cat degree is too large and the internal leakage is too large 3. The working pressure is too high 4. The oil return port is directly connected to the pump population Abnormal heating elimination method of vane pump: 1. Improve the heat dissipation conditions of the fuel tank or use cooling ...

Minor and heavy faults of Rexroth inverters: 1. Minor faults include: inverter over-temperature alarm, cabinet over-temperature alarm, cabinet door opening, unit bypass, etc. The system does not remember the fault of the light, only the fault indication, and the alarm will be automatically eliminated after the fault disappears. During the operation of the inverter, if ...

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