REXROTH proportional valve 4WRBA10W64-2X/G24N brand in stock

REXROTH proportional valve 4WRBA10W64-2X/G24N brand in stock

Shanghai Pumin Industrial Automation Equipment Co., Ltd. specializes in the sales of imported spare parts from Europe and America. The company has its own offices in Germany and the United States, where manufacturers purchase directly from first-hand sources and prices are more advantageous in the market.

Quick quote brands: Hedeke, Rexroth, ASCO, EBRO, MOOG, METRIX, Samson, WEBTEC, Parker, Baode, FESTO，HEIDENHAIN, IFM， Baruff, P+F, Norgren, MAC and other conventional and unfamiliar European and American brands.

The characteristic of REXROTH Rexroth proportional valve is that its dynamic performance is the highest among all hydraulic valves. With this advantage, servo valves have to be used in many situations that require high dynamic characteristics, such as servo control of aircraft rockets, turbine speed regulation, and so on. Those with lower dynamic requirements are basically dominated by proportional valves.

Generally speaking, it seems that servo systems are closed-loop control, and proportional control is more commonly used for open-loop control. Secondly, there are many types of proportional valves, such as proportional pressure and flow control valves, which are more flexible in control than synchronous medication. From their internal structure, servo valves are mostly zero covered, while proportional valves have a certain dead zone, low control accuracy, and slow response. But from the perspective of development trends, especially in the aspect of proportional flow control valves and servo valves, the performance difference between the two is gradually narrowing. In addition, the cost of proportional valves is much lower than that of servo valves, and their anti pollution ability is also strong!

The difference between servo valve and proportional valve

There is no strict regulation on the difference between REXROTH proportional valves and proportional valves, as the performance of proportional valves is getting better and gradually approaching servo valves. Therefore, in recent years, proportional servo valves have emerged. ReXROTH proportional valve, REXROTH valve working principle. ReXROTH ReXROTH proportional valve must be explained

The differences are mainly reflected in the following points: servo valves have no dead zone in the middle position, while proportional valves have a dead zone in the middle position; The frequency response (response frequency) of servo valves is higher, up to around 200Hz, while proportional valves generally have a maximum frequency of several tens of Hz. Servo valves have higher requirements for hydraulic oil and require precise filtration to prevent clogging, while proportional valves have lower requirements.

The performance of REXROTH Rexroth proportional servo valve is between that of servo valve and proportional valve.

REXROTH proportional valve 4WRBA10W64-2X/G24N brand in stock

REXROTH Rexroth proportional directional valve is a type of proportional valve used to control flow and direction.

The working principle of Rexroth proportional valve: During the use of Rexroth proportional valve, attention should be paid to the inspection and adjustment of the load sensing proportional valve When the load sensing spring is too loose, the rear wheel braking force will decrease. At this time, the load sensing spring should be adjusted, but it cannot be adjusted too tightly, otherwise it will cause the rear wheel braking force to be too large and lose lateral control ability, resulting in tail shaking. The correct adjustment method is to land the vehicle on a flat surface with no load, adjust the load sensing spring so that there is no gap between the lever and the piston If conditions permit, precise adjustment methods can be used to measure the pressure of the front and rear wheel brake pipelines, draw pressure distribution characteristic curves, and confirm whether the adjustment is qualified.

When the force on the left side of the REXROTH proportional valve is greater than the sum of the force on the right side and the preload force of the sensing spring (at this time, the pressure is Ps), the piston continuously moves to the right, and finally the valve contacts the valve seat and closes, isolating the input and output oil circuits and achieving equilibrium. If P1 further rises, the piston moves to the left, the valve opens again, and the brake fluid flows into the oil outlet, causing P2 to also rise. The input pressure of the German Rexroth proportional valve VT-NE30-2X is zero That is; At the same time, when the pressure in the output chamber is released from the lip through the hollow acid between the convex ribs of the proportional valve skin ring, and the spring force acting on the proportional valve core is greater than the hydraulic pressure to the right, the proportional valve spring pushes the proportional valve core back to its original position, causing the proportional valve core to separate from the inner hole of the proportional valve skin ring and release pressure At this point, the input and output pressure is zero With input pressure Increasing, i.e. increasing to the left, disrupts the unidirectional force balance of the proportional spool valve When<>&; At 6 o'clock, the left shift of the proportional valve core and the clearance between the proportional valve skin ring form a throttling and mixing valve. Common faults of the proportional reversing valve are: 1. Input and output pressure synchronization. 2. Auxiliary output pressure synchronization at low pressure, normal input and output pressure at high pressure. 3. Input and output pressure normal at low pressure, abnormal input and output pressure at high pressure , 1994. Schematic diagram of the performance test of the mixed ratio inverted loop when N is zero During the experiment, first exhaust the air inside the tube, and then test at low, medium, and high pressures respectively. If the input and output pressures meet the requirements, it is considered qualified.

The REXROTH proportional valve in the Audi four-wheel drive sedan brake system can be used to prevent over braking of the rear wheels after turning off ABS. When the car is driving in a straight line, the brake pressure of the two rear wheels can increase or decrease according to the vehicle load; When the car turns left, the load on the left rear wheel decreases. As the load sensing proportional valve is located near the left rear wheel, it can also work to reduce the brake pressure on both rear wheels. However, when the car turns right, the load on the right rear wheel decreases, and the lateral acceleration of the car causes the load sensing proportional valve to act, reducing the brake pressure on the right rear wheel. This automatic adjustment makes the brake force distribution of the front and rear wheels, as well as the brake force distribution of the left and right rear wheels, close to the ideal brake force distribution, thereby improving braking safety.

The hot selling models of Shanghai Pumin are as follows:

0811404020 REXROTH Rexroth proportional valve 4WRP10E63S-1X/G24Z4/M-850

0811404061 REXROTH Rexroth proportional valve 4WRPH10C4B100L-2X/G24Z4/M

0811404062 REXROTH Rexroth proportional valve 4WRPH10C3B50P-2X/G24Z4/M

0811404063 REXROTH Rexroth proportional valve 4WRPH10C3B100P-2X/G24Z4/M

0811404080 REXROTH Rexroth proportional valve 4WRP10W63S-1X/G24Z4/M

0811404081 REXROTH Rexroth proportional valve 4WRP10W32S-1X/G24Z4/M-849

0811404082 REXROTH Rexroth proportional valve 4WRP10E00S-1X/G24Z4/M-852

0811404600 REXROTH Rexroth proportional valve 4WRPEH6C3B04L-2X/G24K0/A1M

0811404601 REXROTH Rexroth proportional valve 4WRPEH6C3B12L-2X/G24K0/A1M

0811404602 REXROTH Rexroth proportional valve 4WRPEH6C3B24L-2X/G24K0/A1M

0811404603 REXROTH Rexroth proportional valve 4WRPEH6C3B40L-2X/G24K0/A1M

0811404610 REXROTH Rexroth proportional valve 4WRPEH6C4B04L-2X/G24K0/A1M

0811404611 REXROTH Rexroth proportional valve 4WRPEH6C4B12L-2X/G24K0/A1M

0811404612 REXROTH Rexroth proportional valve 4WRPEH6C4B24L-2X/G24K0/A1M

0811404613 REXROTH Rexroth proportional valve 4WRPEH6C4B40L-2X/G24K0/A1M

0811404634 REXROTH Rexroth proportional valve 4WRPEH6C3B40L-2X/G24K0/F1M

0811404801 REXROTH Rexroth proportional valve 4WRPEH10C3B100L-2X/G24K0/A1M

0811404802 REXROTH Rexroth Proportional Valve 4WRPEH10C4B50L-2X/G24K0/A1M

0811404803 REXROTH Rexroth proportional valve 4WRPEH10C4B100L-2X/G24K0/A1M

0811404207 REXROTH Rexroth proportional valve 4WRL16V200M-3X/G24Z4/M

0811404405 REXROTH Rexroth proportional valve 4WRL25V370M-3X/G24Z4/M

0811402051 REXROTH Rexroth Proportional Valve DREB6X-1X/175MG24-25Z4M

REXROTH Rexroth proportional valve DBEM10-51/315YG24K4M

REXROTH Rexroth proportional valve amplification plate VT-VSPA2-1-20/V0/T1

R900954489 3DREPE6C-2X=25EG24K31/A1M=00

REXROTH Rexroth proportional valve amplification plate VT-VRRA1-527-20/V0/2STV

M-3SEW6C3X/420MG24N9Z2/B08V-SO864 M-3SEW6C3X/420MG24N9K4

M-3SEW6C3X/420MG24N9Z2/B08V SO865

R900955887 3DREP6C-2X/25EG24N9K4/M

4WREE10E75-22/G24K31/F1V

4WREE6V32-2X/G24K31/A1V

4WREE6E1-32-2X/G24K31/F1V

4WREE6E1-32-22/G24K31/F1V

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