AAK's 3 tips to ensure that the Proportional Valve is free of jamming, winning the affirmation of customers in Turkey Ewalz is from Turkey, and mainly purchases standard parts of hydraulic cartridge valves from Ningbo China. Recently, they developed a hydraulic manifold that requires the use of SUN proportional valves. He purchased it from a proportional valve manufacturer in Ningbo, and after 2 weeks of operation, the equipment experienced significant vibration. The on-site engineer found that the proportional valve was severely stuck. The original hydraulic valve manufacturer stated that this proportional valve is a replica of SUN, with fully calibrated parameters, but there are differences in performance. Ewalz was speechless and had to look for a new hydraulic valve manufacturer for this proportional valve. Ewalz browsed the AAK hydraulic valve website, stayed for nearly 15 minutes and left a message: 1. Does AAK have an existing program for benchmarking SUN proportional valves? 2. Can AAK completely solve the problem of valve spool jamming, vibration and noise? After communication, it was learned that the hydraulic manifold they developed was very tight on time, they had no time to customize it and could only choose the existing SUN proportional valve. The proportional valve produced by the original valve manufacturer has the same function as SUN, but has poor performance. This SUN proportional valve is widely used, and AAK have a record of 6 shipments last year. There has never been any jamming of the valve spool, and we have inventory, which fully meets his requirements. 2 weeks after AAK sent the SUN proportional valve samples, Ewalz informed us via email that the hydraulic manifold debugging was successful. 2 months later, Ewalz informed us that their engineers were satisfied with the AAK proportional valve. The root cause of unsatisfactory performance of the original valve manufacturer's SUN proportional valve lies in its accuracy. The vast majority of proportional valve manufacturers have a cylindricity machining accuracy greater than 5um, which is 70% lower than the SUN standard cylindricity. For the accuracy of proportional valves that is completely in line with the SUN standard parts, there are probably less than 3 hydraulic valve manufacturers in Ningbo China. AAK controls the accuracy of the proportional valve from 3 aspects: 1. AAK proportional valve spool control: The valve spool is produced using a German CNC lathe with one blade and then high-precision cylindrical grinding. The machining error is controlled within �± 1um, and the coaxiality and cylindricity are controlled within 3um. 2. AAK proportional valve hole control: Adopting Swiss honing processing, the accuracy can reach IT6-IT7 level, and the surface roughness can reach Ra0.2-0.025um.
Replacement Eaton Vickers PVXS-180-M-R-DF-0000-000 Hydrokraft Open Loop Piston Pump/Main Pump Standard export carton package Contact person : Ms. Nancy Guangzhou Top Hydraulic.Co.LTD
We offer design, manufacturing, testing, and delivery to door of various kinds of hydraulic cylinders and hydraulic systems world wide, both standard and non-standard ones. Our production center located in Jiangyin, Jiangsu Provence,only 2 hours drive to Shanghai.
We supply a wide range of hydraulic hose bellow forming machines. One is common hydraulic bellow forming machine which covers DN25-150mm, DN50-300mm, DN80-400mm and forms max double layers of hose and bellow. The other version is updated to form hose and bellows without any scratch on the surface of the bellow and hose.
Increase the equipment efficiency by 11% and reduce the energy consumption by 30%. AAK exclusive hydraulic manifold has no rival At the beginning of March this year, Bartolomeo said in an email that he would like to make an appointment to consult AAK about hydraulic manifold problems. Bartolomeo, from Italy, is the purchasing manager of Italpresse Industrie Shanghai Branch. According to the communication, their company developed a hydraulic die-casting machine at the end of last year. The sales volume is just so. The general feedback is that the equipment has high energy consumption and low production efficiency. Their engineers pondered for more than 2 months, but couldn't find the reason, and the boss also had a big headache. Bartolomeo felt that the hydraulic manifold design dragged down the equipment and consulted the original hydraulic manifold manufacturer. However, the manufacturer could not put forward constructive opinions on the hydraulic manifold design. Bartolomeo thought of AAK, because AAK had proposed to modify the oil circuit when receiving the inquiry about the hydraulic manifold. According to the design drawings and system schematic diagram of hydraulic manifold provided by Bartolomeo, AAK engineers closed the door and discussed for 3 days, basically found out the direction, and it is 90% determined that there was a deviation in the oil circuit design of the original hydraulic manifold on the hydraulic die casting machine. There is an energy conflict between the original hydraulic manifold oil circuit aperture and the hydraulic valve used, resulting in the slow response of the hydraulic system and the need for additional energy to maintain the operation of the system, resulting in high energy consumption and low production efficiency. AAK can redesign the hydraulic manifold oil circuit and send hydraulic manifold samples within 30 days. Bartolomeo was very happy that AAK found the cause of hydraulic manifold problem at once. The situation was fed back to the boss, who immediately paid for AAK to redesign and test samples. A month later, AAK sent out the whole newly designed hydraulic manifold. Two weeks later, Bartolomeo emailed to order 20 hydraulic manifolds first to replace those ones on the equipment complained by customers. I was surprised that there was no comment on AAK hydraulic manifold samples but received the urgent order first. Bartolomeo advised that according to the comparison of their engineerâ??s on-site test run, the die casting machine with AAK hydraulic manifold has a sensitive response, the working efficiency is 11% higher than before, whatâ??s more, the energy consumption is reduced by 30%. Their boss asked to order some hydraulic manifolds for emergency use first, and then replace all hydraulic manifolds on the original equipment with AAK shipments.
Only AAK was able to produce the hydraulic manifold blocks, and its technology is not inferior to American and Japanese counterparts Scott comes from an equipment company in the United States. In the second half of last year, they developed a hydraulic equipment to be introduced at the exhibition. The chief engineer of the company requires the purchasing department to get all hydraulic manifold blocks arrive at the factory within 3 months. There is a hydraulic manifold block. Due to the slow production, the production time of 45 days is not enough. Scott disassembled the hydraulic manifold blocks, purchased the hydraulic valve blocks from one factory and the hydraulic cartridge valves from another factory. All hydraulic manifold blocks and those parts produced separately arrived at the factory in the United States in 3 months. The technicians in the workshop installed them. After a few days of commissioning, they found that there were oil leakage on one hydraulic manifold block, that is the one disassembled and produced in two different factories. The chief engineer requires getting a new hydraulic manifold block within 1 month, otherwise it will be too late to catch the exhibition. Scott contacted the original manufacturer. As a result, the two hydraulic valve manufacturers prevaricated each other. Their engineers also tested the hydraulic cartridge valves and hydraulic valve blocks separately, and there was no abnormality. Scott tried to contact new manufacturers of hydraulic manifold blocks, but they all said that they couldn't get samples ready within 30 days. Scott was worried. Scott saw on AAK website that a hydraulic manifold block was very close to the size he wanted to purchase, so he sent an inquiry. After two rounds of communication, we learned about the problems he encountered in purchasing hydraulic manifold blocks. I told him that if the hydraulic cartridge valves and the hydraulic valve blocks were approved to be no problem, the workshop technician might break the seal ring or shift the seal ring during the installation of the hydraulic manifold blocks. This kind of hydraulic manifold blocks purchased from different manufacturers and then assembled is easy to have problem. A customer of AAK encountered similar problems before. After Scott asked their mechanic to replace the sealing ring, there was no abnormality in the test run, and they could catch up with the exhibition. Scott is glad that the problem of hydraulic manifold block has been solved, and said that for all hydraulic equipment orders after the exhibition, the hydraulic manifold blocks will be purchased from AAK, and also asked us to send hydraulic manifold blocks with similar dimensions to the United States to test stability and service life.
Close die forging press 630t-50000t Oil hydraulic Working pressure 25MPa, 31.5MPa, 63MPa, 100MPa Prestressing frame Rexroth pump Special designed cartridge valves Siemens PLC
Open die forging press 800t-15000t Oil hydraulic Working pressure 25MPa, 31.5MPa, 63MPa, 100MPa 2-column / 4-column Prestressing frame Welding beam / casting beam Moveable working table Rotary forging table Rexroth pump Special designed cartridge valves Siemens PLC
Hydraulic jacks, hydraulic bottle jack, hydraulic floor jack, hydraulic professional jack, hydrauli garage jack, low profile jack, scissor jack, transimission jack, jack stands, engine crane, capacity: 1ton, 1.5ton 2ton, 3ton, 5ton 8ton, 10ton 15ton 20ton 32ton 50 ton 100ton.
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DWX Mining Suspension Single Hydraulic Prop Acrow Jac Parameter of DWX Mining Suspension Single Hydraulic Prop Acrow Jack Item model Max height (mm) Min height (mm) Working Operation (mm) Working resistance (kN) Weight (kg) Pillar scope of work (mm) DW35-180/100X35001960154018071.01960~3500 DW31-180/100X31501780137065.01780~3150 DW28-250/100X28001600120025059.01600~2800 DW25-250/100X25001430107054.01430~2500 DW22-300/100X2240128096030049.51280~2200 DW20-300/100X2000115085045.01150~2000 DW18-300/100X1800103576541.51035~1800 DW16-300/100X160092068038.0920~1600 DW14-300/100X140081059034.0810~1400 DW12-300/100X120070050030.5700~1200 DW10-300/100X100059540527.5595~1000 DW08-300/100X80049031024.0490~800 DW06-300/100X63040023021.0400~630 Project / modelDW45-250/110XL(G)DW42-250/110XL(G)DW40-250/110XL(G)DW38-250/110XL(G) Working resistance F1 KN 250 Work of hydraulic P1 MPa 28.34 initial supporting force F2 KN 132.4~176.7 pump station pressure P2 MPa 15~20 Max height H max mm 4500420040003800 Min height H min mm 2533237322632153 Working stroke mm 1967182717371647 Weight w kg 102.496.7892.9489.1
china coal0001 DWB FRP Fiber Reinforced Plastics Single Hydraulic Prop Introduction of DWB FRP Fiber Reinforced Plastics Single Hydraulic Prop DWB FRP Fiber Reinforced Plastics Single Hydraulic Prop for foreign Note constant resistive temporary pillars, it is mainly used in coal mines to dig ends temporary support, can also be used for other mining and geotechnical engineering applications require temporary shoring, the use of lightweight composite products material produced. Available coal hydrostatic water to make it work, with a light weight corrosion-resistant and easy to operate and so on. Application of DWB FRP Fiber Reinforced Plastics Single Hydraulic Prop DWB FRP Fiber Reinforced Plastics Single Hydraulic Prop as a temporary support equipment, is widely used in coal industry, roadway excavation, roadway maintenance, new advanced support and temporary support prop equipment. Parameter of DWB FRP Fiber Reinforced Plastics Single Hydraulic Prop ParameterDWB22-30/100DWB25-30/100DWB28-30/100 Max.Height(mm)224025002800 Working Stroke(mm)570/820570/820570/820 Rated Resistance(kN)303030 Rated Working Pressure(MPa)3.83.83.8 Setting Pressure(kN)303030 Cylinder Inside Dia.(mm)100100100 Working Pressure of Safety Valve(MPa)3.83.83.8 Weight(kg)212222.5 ParameterDWB31.5-30/100DWB35-30/100DWB38-30/100 Max.Height(mm)315035003800 Working Stroke(mm)570/820570/820820 Rated Resistance(kN)303030 Rated Working Pressure(MPa)3.83.83.8 Setting Pressure(kN)303030 Cylinder Inside Dia.(mm)100100100 Working Pressure of Safety Valve(MPa)3.83.83.8 Weight(kg)252736 Working MediumEmulsified Liquid, Hydrostatic Water.
1.Place of origin: guangdong, china (mainland) 2.Brand name: kav drawer slide 3.Model number: 663fli(with handle) 4.Lengths: 300mm to 550mm 5.Mateial: environment-friendly galvanizzed sheet 6.Load capacity: 25kg 7.Open-close movement: more than 50, 000 cycles test certified 8.Open means: full extension 9.Install: undermounted 10.Thickness of board: 16mm 11.Usage rage: suitable for all kinds of wooden drawer 12.Finish: zinc plated 13.Packing: 10sets/ctn or as customer's request. 450mm: net weight: 13kg/ctn, 10sets/ctn; gross weight: 14kg/ctn, 10sets/ctn; cbm: 472*230*100mm. 500mm: net weight: 14kg/ctn, 10sets/ctn; gross weight: 15kg/ctn, 10sets/ctn; cbm: 522*230*100mm. 10sets/ctn or as customer's requst.
The hydraulic support connector is a vulnerable part. After the casting was used, the forging process was changed because the strength could not meet the requirements. Today, I have a preliminary understanding of the processing technology of the hydraulic support connector. At first, the free forging process was adopted, and later it was changed to gas cutting forming. Due to the limited forging tonnage, the blank margin produced by forging has a large rough edge, and the forming ability of semicircle ball is poor. Later, after improvement, it can save materials and man-hour, simple operation, high production efficiency, flexible process operation, and local forming. As the main connecting part of hydraulic support, the connecting head is easy to wear out, so it has high requirements on material technology. On the one hand, it can improve the service life and then reduce the maintenance and replacement cost. If you need hydraulic support connector, please contact us
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The hydraulic support connector is also quite common in the daily procurement of hydraulic support parts. Its main function is to connect scraper conveyor and hydraulic support organically to realize the role of force transmission between them. When working, the connecting head has to move the bracket and push the conveyor to carry out the operation, completing the organic operation of these two links. When the hydraulic support connector works under the alternating stress of tension, compression and torsion, if the working environment in the mine is poor and the air is humid, there may be many unexpected factors, leading to the deterioration of the stress of the connector. Once the connection is damaged, the scraper conveyor and hydraulic support may not work normally, which may be shut down and stop production, causing huge losses. Therefore, it is necessary to check the first vulnerable parts of the hydraulic support connection from time to time, so as to avoid production problems. If you need to purchase hydraulic support connectors, you are welcome to contact us
Hydraulic cylinder can be referred to as hydraulic cylinder, hydraulic system is the executive element. From the function point of view, the hydraulic cylinder is the pressure energy into mechanical energy conversion device. So how does a hydraulic cylinder work? According to the structure and working characteristics, the hydraulic cylinder can be divided into single action hydraulic cylinder, double action hydraulic cylinder, combination hydraulic cylinder, swing hydraulic cylinder and telescopic hydraulic cylinder. In general, we commonly used is the use of piston rod double - acting hydraulic cylinder. We also generally understand the principle of double acting hydraulic cylinders, so today we will look at the principle of single acting hydraulic cylinders. The so-called single action hydraulic cylinder, is that the pressure oil can only supply oil to one side of the piston chamber in the hydraulic cylinder, the oil pressure pushes the piston to move in one direction. When the motion is complete, the piston returns to its original position by its own weight or other factors. The double-acting hydraulic cylinder may supply oil to a cavity with or without a piston rod at one end. By changing the direction of the oil input, the oil pressure pushes the piston up and down or to the left and right. If you need hydraulic cylinder accessories, you are welcome to contact us in time
The hydraulic prop is the main component to support and carry the hydraulic support, it directly affects the performance of the hydraulic support. Therefore, in addition to reasonable working resistance and reliable working characteristics, hydraulic prop must also have enough compressive and bending strength, good sealing performance, simple structure and suitable for the work of hydraulic support needs. Hydraulic prop is generally composed of piston, piston rod, cylinder block three parts. Because the support work, the column bearing capacity is large, and the drop column force is small, so the piston rod diameter is larger, often use hollow structure, in order to ensure sufficient stiffness of the piston is generally y sealing ring, copper ring guide, cylinder bottom welding. The cylinder block and the cylinder head are connected by steel wire, thread or clasp. In order to prevent the external coal seam and other stolen goods into the cylinder block, the guide sleeve should be equipped with a dustproof ring. For the single telescopic column, in order to expand the support height of the hydraulic support, can use mechanical extension rod, the head structure of the column is spherical, and the connection between the top beam or the base with pin shaft or block fixed, in order to make the column in the work by a certain adaptability. The liquid supply method of hydraulic prop consists of two ways: internal liquid supply and external liquid supply. In addition to the double telescopic column with internal liquid supply mode, the single telescopic column is mostly external liquid supply mode, which is simple in structure, convenient in processing and maintenance. If you need hydraulic support column, you are welcome to contact us in time
Fixed protection, such as wooden brackets, shall be applied in the delivery and transportation of y303-30 hydraulic support columns. In case of large quantities, such as hydraulic jacks, which are delivered in batches, shall be bundled firmly to avoid falling off, extrusion, rolling collision and other damages. If it is in winter, the product should be injected with antifreeze according to the low temperature of the applicable area and the transportation distance. In other seasons, the emulsion in the column of Y303-30 hydraulic support should be emptied. However, the transportation and storage process of the column after the drainage should be guaranteed, and no corrosion phenomenon should occur inside. If the hydraulic support column of Y303-30 has been stored for more than three months, the emulsion in the hydraulic support column should be checked for deterioration. If so, the emulsion should be replaced. When the drainage method is adopted, the rust should be checked. The hydraulic support column of Y303-30 should be paid attention to and ensure that the joint seat is not damaged during the use, and the transportation package should be strong and reliable. The column should be loaded and unloaded lightly in the process of transportation. Special attention should be paid to the joint seat so as not to damage the interface and affect the connection use of the hydraulic support column. In fact, the above methods are not only for y303-30 hydraulic support column, but also for all kinds of hydraulic support jack cylinders. In transportation, storage and use, some problems can be avoided for the hydraulic support column or hydraulic support jack. Henan Shuangzhi Machinery as hydraulic support accessories manufacturers, can produce and process hydraulic support column, hydraulic support jack, bed beam, bed, bottom adjustment beam and other accessories, welcome new and old customers to consult understanding, looking forward to working with you!
The main function of the connecting head of the hydraulic support is to connect the scraper conveyor and the hydraulic support organically to realize the effect of force transmission between them. When working, the connecting head has to move the bracket and push the conveyor to carry out the operation, and the organic operation of these two links should be completed. Therefore, in addition to the alternating stress of tension, compression and torsion, and the poor working environment in the mine, and the heavy humidity in the air, there may be many unexpected factors, leading to the deterioration of the stress of the joint head. Once the connection is damaged, the scraper conveyor and hydraulic support may not work normally, and may be shut down and stop production, causing huge losses. Therefore, the hydraulic support connection head also plays an important role in coal mine production. For more information about hydraulic support connectors, you can consult henan Shuangzhi Machinery for more information
