Mechanical Hardware

On Monday afternoon, I received an email from Tony. Tony is a purchasing manager of CASAPPA in Italian, mainly responsible for the purchasing of hydraulic pump components, and the work has been very smooth. Last month, they received a complaint from the largest customer that the pressure at the outlet of the hydraulic pump sometimes rises by itself, resulting in unstable operation of the equipment. The customer's site engineer couldn't solve it and turned to CASAPPA for after-sales service. Although the warranty period has expired, they still need to help customer solve the problem. Their engineers tested various parameters of the hydraulic pump. After comprehensive analysis, they were still uncertain about the root cause, but they suspected that the hydraulic pressure relief valve in the pump is faulty. The engineer asked Tony to contact the original supplier of the hydraulic pressure relief valve and ask him to send a sample of the hydraulic pressure relief valve for replacement and test. It is a local hydraulic valve manufacturer and they still have samples in stock. After receiving samples and commissioning, the engineer's suspicion was proved to be correct. After replacing the hydraulic pressure relief valve, the hydraulic pump worked normally. Tony asked the original hydraulic valve manufacturer to urgently replenish 30 hydraulic pressure relief valves to solve this complaint. The manufacturer said that the shipment has passed the two-year warranty period. At present, there are only 3 samples in stock. The remaining quantity needs to wait in production schedule for production, and can only be delivered after 3 months. If offering this plan to the big customer, Tony would be scolded by the boss. He thought of AAK, because the hydraulic valve failed last year, which was also solved by AAK. Tony established a business relationship with us last October. Now we are also friends besides business. We often discuss the knowledge related to hydraulic valves. His email on Monday is just to ask for help on this hydraulic pressure relief valve. After knowing these conditions, I asked him to send us samples of those faulty hydraulic pressure relief valves, and provide us the drawings of this hydraulic pressure relief valve, noting those special requirements. After receiving and disassembling the samples from Tony, we found that the main valve spool of the hydraulic pressure relief valve was too loose and had increased leakage, then the pressure at the oil outlet increased. The problem should be caused by high-frequency wear or insufficient accuracy of the original shipped hydraulic pressure relief valve. The engineer of CASAPPA asked us to reply why it was determined that it was the problem of the valve spool? Because in the pressure reducing control circuit, after the directional valve works, the flow at the valve outlet becomes zero, but the pressure still maintains the originally set pressure. In this case, the flow through the pressure reducing port is only pilot flow. Due to the small pilot flow, which is generally within 2L / min, the pressure reducing port of the hydraulic pressure relief valve is basically close to the fully closed position and the opening is very small. According to the flow continuity theorem, this part of leakage must also flow from the damping hole of the main valve spool, that is, the flow through the damping hole is composed of pilot flow and leakage. The area of the damping hole and the oil pressure in the spring chamber of the main valve remain unchanged (the oil pressure in the spring chamber is determined by the pre compression shrinkage of the pressure regulating spring that has been adjusted). In order to increase the flow through the damping hole, the oil pressure in the lower chamber of the main valve will inevitably increase. Finally, it is determined that the main valve spool of the hydraulic pressure relief valve is too loose or the accuracy is not enough. The engineer was convinced by our whole demonstration and suggested Tony to take AAK as their main hydraulic valve supplier. AAK produced 30 hydraulic pressure relief valves in 15 days and guaranteed the quality for 3 years. Half a month later, Tony sent an email saying that everything was normal with the hydraulic pump after using AAK hydraulic pressure relief valve. The customer fed back his appreciation to his boss, who was particularly satisfied with his ability to deal with the crisis decisively and paid more and more attention to him. AAK has been doing what peers are unwilling to do. If you have any problem about hydraulic pressure relief valve, or about hydraulic pressure control valve, you can also contact us to have a small try. https://www.aakindustry.com/info-detai , l/hydraulic-relief-valve-aak125

AAK uses endoscope C50 to detect the internal burr of the hydraulic valve block, and then sprays the burr remaining in the hydraulic valve block with high-pressure solution, so that there is nowhere for the burr to hide. Nearly 95% of domestic hydraulic valve manufacturers are not equipped with endoscope and ignore 100% removal of the residual burr of the hydraulic valve block. The American customer who has suffered a loss elsewhere chose to order from AAK again. Most domestic hydraulic valve manufacturers use conventional physical methods to deal with the burr of hydraulic valve block, and check whether the burr is cleaned by experience, especially the burr of deep hole or magnetic burr, which can hardly be cleaned. It is common that the defective rate of hydraulic valve block exceeds the standard due to human error. At the beginning of last year, we received an inquiry for hydraulic valve block from Hunter, an American customer. We calculated the price according to his hydraulic valve block drawings. Hunter was not satisfied with our quotation. Because the communication was very pleasant, I wanted to make friends with hunter and gave up my commission to adjust the price. Hunter frankly said that although the new price of AAK hydraulic valve block meets his target price, the prices of other hydraulic valve manufacturers are still cheaper than those of AAK. We can only withdraw from the purchase of hydraulic valve block amicably. If something goes unusual, there will be problems. 2 months later, Hunter came back to us and said that he was very willing to accept our quotation for hydraulic valve block. He informed that there were different degrees of burrs at the internal cross holes of the hydraulic valve block samples proofed by the original hydraulic valve manufacturer. The hydraulic valve block samples were modified 3 times. Each time the cartridge valve was installed and debugged, the valve spool was stuck from time to time. The factory has also conducted commissioning for many times, and has been unable to remove burrs for 100%. He can only give up this hydraulic valve manufacturer and came back to AAK. Burr must be produced in the drilling process of hydraulic valve block, which is very harmful to the hydraulic system. In addition to adopting appropriate treatment process for burr removal, it is also necessary to have relevant auxiliary testing equipment to guarantee the complete 100% removal of burr. Hunter asked us to arrange approval samples of hydraulic valve block immediately. After 15 days, we sent the hydraulic valve block samples. On the 3rd day after Hunter received the samples, he sent an email to inform AAK that the samples passed testing at one time. Hunter admired that AAK can get the hydraulic valve block samples approved at one time that the peer can't get approval at 3 times. At the same time, he also expressed his curiosity about how AAK can accurately remove the burrs? Because this hydraulic valve block has many internal cross holes and deep holes. Firstly, the accurate position of burr in the hole must be found, and then the burr shall be removed by high-pressure solution jet. Then, AAK has one more process than peers, using endoscope C50 to recheck the subsequent residual burr. If there is still residual burr, it shall be cleaned and rechecked again until it is completely eliminated. This is the detail awareness lacked by other hydraulic valve manufacturers, and also the reason that AAK can achieve 100% deburring. Details make a difference. AAK concentrates on details, strives for perfection. You can purchase at ease, use at ease for all types of hydraulic valves produced by AAK. https://www.aakindustry.com/info-detail/hy , draulic-valve-block-aak124

The day before yesterday, someone left a message on the website of hydraulic cartridge valve manufacturer AAK: I have read several AAK articles about valve cage precision machining, and I would like to know how hydraulic cartridge valve manufacturer AAK ensures the machining accuracy of valve spools? From the IP, it should be a competitor of hydraulic cartridge valve manufacturers. My peers would like to see AAK's processing and equipment, even if they imitate the hydraulic cartridge valve manufacturer AAK, but in fact, I do not reject it. Whether it is a cone type valve spool or a ball type valve spool, machining accuracy is the key. I remember in March this year, Basim from Türkiye met the problem of high-precision valve spool with a peer of hydraulic cartridge valve manufacturers in Ningbo. For 3 samples, the cylindricity of the valve spool hovered between 0.3 and 0.6 µm, and the accuracy was also between 2 and 3 µm. Under the recommendation of a hydraulic cartridge valve manufacturer in Ningbo, Basim contacted AAK. I told Basim that for the cylindricity of valve spool below 0.3 µm and the accuracy controlled within 2 µm, although this requirement is a bit difficult, it can still be achieved in the precision machining process as long as a CNC cylindrical grinder is used and there is precise automatic detection. Basim seemed a bit hesitant, so I went to the workshop and filmed a video of the equipment used by hydraulic cartridge valve manufacturer AAK and how to process the valve spool. After 3 days, Basim requested us to make 12 samples first. For valve spools with high requirements, the first choice of hydraulic cartridge valve manufacturer AAK is Mitsubishi's CNC cylindrical grinder from Japan for precision machining. At the same time, AAK has also upgraded the end face measuring instrument and the outer circle measuring instrument, which can provide synchronous feedback with precision machining. The laser beam from the end face measuring instrument is synchronously irradiated on the valve spool end face, and the generated light wave is received and transmitted to the system. In this way, the precision of the valve spool end face can be dynamically tested. The outer circle measuring instrument measures the surface of cylindrical workpieces point by point and corrects cylindricity from time to time. Once an abnormality is detected, the device will automatically correct the deviation. There may be many hydraulic valve manufacturers who dare to buy Japanese CNC cylindrical grinding machines, but there may not be many hydraulic cartridge valve manufacturers in Ningbo China who dare to upgrade their measurement systems. The higher the precision of the valve spool, the more important it is to focus on precision machining equipment, automated testing system, and specialized machine operation management. With these 3 basic points, after 3 to 6 months of mutual adjustment, human errors are basically eliminated. 2 weeks after Basim received 12 hydraulic cartridge valves samples from AAK, we were advised that their engineers first disassembled 6 samples and approved AAK samples only after testing the accuracy of the valve spool. Hydraulic cartridge valve manufacturer AAK in Ningbo China, focuses on 3 points, and is not afraid of the difficulty of the valve spool. You can also give it a try. AAK HYDRAULIC CARTRIDGE VALVES (720) 2023-11-21 https://www.aakindustry.com/info , -detail/hydraulic-cartridge-valve- manufacturer , s-aak720

Mablevi is from South Africa, and has purchased hydraulic cartridge valves from AAK for 2 years. They are all standard parts of SUN or HyraForce models. The order frequency is high, but the quantity is small. Sometimes 10 pieces are purchased for one style, and sometimes 1 piece is purchased, but AAK has never disliked them. Last week, I received the annual order of 1,000 hydraulic cartridge counterbalance valves from Mablevi, which was unexpected and surprising. At the beginning of last year, their dealers reported that the energy consumption of the excavators they supplied was high. In order to increase the market share, the energy consumption must be reduced. Their engineers optimized the whole hydraulic system and put forward new requirements for the hydraulic cartridge counterbalance valve with energy recovery function. According to the feedback of the original cartridge valve manufacturer, this is the model same as SUN hydraulic cartridge counterbalance valve, which does not have energy recovery function. Mablevi checked with SUN and got the reply that this function is not available, but it can be customized. It requires a high MOQ and high development cost. Mablevi was in trouble. Mablevi thought of AAK and asked: Can AAK customize the hydraulic cartridge counterbalance valve with "energy recovery" function? It is the first time that I received such functional requirement from customer. After communication, I learned that they encountered difficulties in purchasing this hydraulic cartridge counterbalance valve. According to their equipment hydraulic system principle, in the process of load reduction and braking, the mechanical energy of the load is fully converted into internal energy through the throttling of the hydraulic cartridge counterbalance valve to achieve the smooth load reduction and braking, which leads to energy waste. Can we make use of this energy? This is our thinking direction. After 45 days, AAK sent 48 samples of hydraulic cartridge counterbalance valves. 3 weeks after the samples of the hydraulic cartridge counterbalance valve were sent, Mablevi informed me by email that the excavator could work after be installed with AAK hydraulic cartridge counterbalance valve. Their internal test showed that the energy consumption fell by about 20%. It needs to wait the specific feedback from the market. He asked me to wait patiently for the annual order of this hydraulic cartridge counterbalance valve. AAK hydraulic cartridge counterbalance valve can realize the stable load, and the mechanical energy of the load can be converted into pressure oil through the oil recovery hole to realize the energy recovery function when lowering or braking. The key lies in 3 unique structures: 1. The throttling chamber of AAK hydraulic cartridge counterbalance valve is divided into pressure oil chamber, return oil chamber, two oil drain chambers and control oil chamber. The control oil chamber is connected with the control oil port through the throttle, the pressure oil chamber is connected with the pressure oil port, and the two oil drain chambers are connected with the oil drain port. 2. AAK hydraulic cartridge counterbalance valve is also equipped with a three- way pressure compensation chamber with 4 holes (oil inlet hole, recovery oil hole, working oil hole, and control oil hole). The oil inlet hole is connected with the oil return cavity, the oil inlet hole is connected with the oil drain cavity, the control oil hole is connected with the pressure cavity, the recovery oil hole, and the working oil hole is connected with their oil ports. 3. The compensation valve spool and balance spring are installed in the compensation valve chamber. When the compensation valve spool acts, open the recovery oil hole first, and then open the working oil hole. The pressure of the oil inlet hole and the balance spring control the opening of the oil receiving hole and the working oil hole, control the pressure of the oil hole, and control the closing of the oil receiving hole and the working oil hole. AAK hydraulic cartridge counterbalance valve, has 1 more function than SUN standard part, and reduces energy consumption by 20%. You can also try it! https://www.aakindustry.com/info-detail , /cartridge-counterbalance-valves-aak522

One morning in the first half of this year, shortly after Sam arrived at the company, the boss asked him to come to his office. He realized whether there was a complaint about the hydraulic valve. He saw that the technical director was also in the boss's office. It turned out that the hydraulic check valve installed on the hydraulic pump had leakage in different proportions. These hydraulic pumps were due to ship in 20 days. The boss asked him to purchase the qualified hydraulic check valve in 40 days, because their customer only gave the company a 4-week extension. The technical director informed that according to the on-site detection, about 20% of the hydraulic check valves had leakage. After dissection, it was found that the gap between the valve body hole and the valve spool of these leaking hydraulic check valves was uneven, and some even exceeded 40μm. The gap dimensions are quite different. Sam immediately contacted the original hydraulic valve manufacturer and asked him to replenish 30% to replace those unqualified hydraulic check valves, but he was rejected. Per the original hydraulic valve manufacturer, these hydraulic check valves passed the inspection before delivery and the leaked hydraulic check valves were caused by their improper installation. In the end, the manufacturer didn't even reply to his email. Sam was angry and had to find a new supplier of hydraulic check valve. Sam found AAK HYDRAULIC VALVE in Google and browsed AAK website (www.aakindustry.com), which made him see the dawn and feel that AAK hydraulic valve is different. He emailed us inquiry about the hydraulic check valve and truthfully informed us of the problems he encountered with the Chinese hydraulic valve manufacturer. After several rounds of e-mail communication and integrating the drawings and operating conditions provided by Sam, AAK promised him to offer qualified hydraulic check valve samples within 14 days. If the samples are qualified, the 30% of quantity that he needs can be delivered in 4 weeks. After 14 days, Sam received the hydraulic check valve samples. There was no leakage after installation and commissioning, and the gap between the valve body hole and the valve spool of each hydraulic check valve could be stable within a range and uniform in size. The technical department told him that the standard deviation (sigma) accuracy of the clearance dimension of AAK hydraulic check valve was more than 3 times higher than that of the original supplier. Sam was surprised how AAK hydraulic valve was different? The whole line of production equipment of AAK hydraulic valve is a high- precision machine tool and processing center imported from Switzerland. The core materials are imported from Germany and South Korea, ensuring the production accuracy of valve body and valve spool. The valve spool diameter of this hydraulic check valve is greater than 20mm, and the gap between the valve body and the valve spool needs to be 15μm-25μm, which is an industry requirement, but AAK uses 15μm-20μm as the hard index for production, which is 25% higher than the industry standard. Before each batch of production, the accuracy of each axis of the machine tool needs to be tested, including positioning accuracy, repeated positioning accuracy and reverse positioning accuracy. After obtaining the test data, the accuracy can be compensated. Most hydraulic valve manufacturers ignore this link. That is why the gap dimension standard deviation (sigma) accuracy of AAK is more than twice that of Sam's old hydraulic valve supplier. AAK completed 30% quantity of hydraulic check valves on schedule. Sam solved the unsuccessful procurement without danger. The boss praised him for completing the procurement on schedule and suggested him to find more hydraulic valve suppliers like AAK. AAK hydraulic check valve has guaranteed quality and after-sales service. Our quality benchmarked with international first-line brands. You can also give it a try. https://www.aakindustry.com/info-detai , l/hydraulic-check-valve-aak123

Timothy is from a Greek hydraulic equipment company, and has been in the company for 5 years. At the beginning of this year, they launched a new hydraulic injection molding machine, focusing on energy-saving and consumption reduction. The hydraulic manifold for the machine is designed internally by them, and they chose a hydraulic manifold manufacturer who has cooperated for 3 years to try samples. Although the equipment debugging is smooth, the energy consumption has not been significantly improved. Timothy guessed that the hydraulic manifold was not efficient, but he had no idea about optimization. The hydraulic manifold manufacturer has solution neither. Timothy also tried to contact more than 10 hydraulic manifold manufacturers. They either have no reply or have to find out the reason during sampling. With promoting date approaching, the whole team was very anxious. At Google, Timothy browsed AAK's webpage, noticed a series of articles on hydraulic manifolds, and left a message with 3 questions: 1. Does AAK have the original design capability of hydraulic manifolds? 2. What customers does AAK hydraulic manifolds supply to? 3. How long does it take for AAK to customize a set of hydraulic manifold? I felt that this is a customer with a real order, and advised that some of AAK hydraulic manifolds are customized according to the customer's drawings, some are designed according to the customer's equipment working conditions, and also helped new customers solve some difficult and complicated cases of hydraulic manifolds. Honeywell is AAK's hydraulic manifold customer for 6 consecutive years. On the second day, Timothy sent us the original design drawings of hydraulic manifold, equipment working conditions, testing videos, and the original manufacturer's hydraulic manifold pictures. I knew that this was a matter of trust. As long as the problem could be solved, the order would be awarded to AAK. Our technical team has discussed internally for 1 day, and we have the idea to optimize the oil circuit layout of the original hydraulic manifold, so that the energy consumption can be reduced by 20%. After learning about it, Timothy directly paid the development fee. After 45 days, AAK sent the hydraulic manifold samples. 2 months later, Timothy sent an email saying that the AAK newly designed hydraulic manifold had really reduced the energy consumption of their hydraulic injection molding machines by more than 20%, and the promotion was smooth. It was just taking time to place annual order. The 3 key points of this hydraulic manifold design are: 1. The oil circuit should be reasonable: we have MDTools professional software, and engineers with 17 years of industry experience to operate the oil circuit. 2. Details are the key: elbows are designed through energy efficiency correlation and smooth transition methods to minimize pressure drop, while most hydraulic manifold manufacturers use conventional elbows. 3. Process is the core: for hydraulic manifold design, we have a complete set of processes. From hole checking, wire network connection, hole network to component selection, oil circuit volume and assembly relationship are all linked. The hydraulic manifold has compact structure, small space occupation and small pressure loss. AAK hydraulic manifold, 3 advantages of design, energy consumption reduced by 20%, you can also try a small order! https://www.aakindustry.com/info-det , ail/hydraulic-manifolds-aak389

Maddox comes from Turkey and purchases many hydraulic flow control valves from Ningbo China every year. At the beginning of this year, a hydraulic flow control valve with hole accuracy requirement of within 2μm exhausted him. Their client was developing a hydraulic power unit in the aviation industry that requires the use of hydraulic flow control valves. Maddox still made samples from a hydraulic flow control valve manufacturer in Ningbo, but it didn't go smoothly. It took 75 days for the original manufacturer to adjust the valve hole accuracy twice, but it still couldn't meet the 2μm accuracy standard. The best accuracy can only be at 3μm. The customer has pushed the progress of the hydraulic flow control valve several times. Maddox realized that relying solely on the original manufacturer is difficult to achieve good results. After contacting several other hydraulic valve manufacturers in China, there is still no one who can guarantee the accuracy of the hydraulic flow control valve within 2μm, it takes time to make adjustments, Maddox was very anxious. Maddox contacted me through the introduction of other hydraulic valve colleagues in Ningbo. According to his machining drawings for hydraulic flow control valves, most of the processes are not difficult, but the precision machining of the valve holes for hydraulic flow control valves is difficult, especially with an accuracy of within 2μm, this not only requires good equipment, but also requires experienced technicians. I provided a high- precision hydraulic flow control valve case from a Canadian client for his reference. Maddox paid for the development fee the next day, and requested AAK to make samples. After 45 days, AAK sent out 30 hydraulic flow control valves. 2 weeks later, Maddox informed us that with AAK hydraulic flow control valve, their aviation hydraulic power unit can now work, which means that the function of AAK hydraulic flow control valve has been recognized by the customer. Maddox asked me to patiently wait for the bulk order, which should be placed no more than 3 months. For this hydraulic flow control valve, AAK adopts a high-precision CNC lathe from Japan, and machine tools for processing military products. The encoder can be used for position measurement and can compensate for errors caused by tool wear and other reasons. At the same time, the ball screw is driven by a driving motor. The ball screw is pre tensioned and installed for interference, and there is no gap during the transmission process, ensuring that the accuracy tolerance is stable and within 2μm. AAK hydraulic flow control valve, accuracy within 2μm, you can also give it a try. AAK HYDRAULIC VALVES (610) 2023-06-20 https://www.aakindustry.com/info , -detail/hydraulic-flow-control-valves-aak610

Kate, the buyer of Terex company, was asked by the head office last month to purchase a batch of hydraulic pressure valves within 3 months. She vowed to the boss that it would be completed in 2 months. As usual, Kate sent the hydraulic pressure valve inquiry to more than 10 hydraulic valve manufacturers she was familiar with, including American hydraulic valve manufacturers and Chinese hydraulic valve manufacturers. She chose 3 factories to provide hydraulic pressure valve samples for testing. After the test, the technical department informed that only the hydraulic pressure valve samples provided by American manufacturer were qualified. The trouble is that the price of the qualified hydraulic pressure valve exceeds 40% of the company's budget price. She has no authority to decide to use the products of this American hydraulic valve manufacturer. After discussion with the technical department, she learned that those unqualified hydraulic pressure valves are mainly due to the wear or fracture of the sealing ring after 15,000 times of impact during the durability test of the hydraulic pressure valve, resulting in the leakage of the hydraulic pressure valve. Only those hydraulic pressure valves that have not leaked for more than 40,000 times are qualified. She was very depressed that the quotation of the other 3 hydraulic pressure valves was within the budget, but the quality was unqualified. At this time, Kate realized why the company gave him 3 months to purchase. She hurriedly sent inquiry to new hydraulic valve manufacturers, and specially emphasized the need for hydraulic pressure valves with more than 40,000 durability tests. The trouble is that no hydraulic valve manufacturer gave her an offer. Kate realized the difficulty of procurement. She had wasted 3 weeks. Procurement was still in its infancy, and the technicians had been urging progress. After learning about Kate's purchase status, the colleague recommended her to contact AAK HYDRAULIC VALVE to try. When we received the hydraulic pressure valve drawing from Kate, we first gave a quotation. She told us very frankly that the price of AAK was 20% higher than that of other China hydraulic valve manufacturers, but 15% cheaper than that of the United States. She needed us to reduce the price greatly. We suggested providing the hydraulic pressure valve samples for testing first, and then discuss the price after passing the test. 2 weeks later, Kate informed that the test was qualified and AAK hydraulic pressure valve durability test had reached more than 40,000 times. She was surprised why AAK passed the hydraulic pressure valve durability test, while the other hydraulic valve manufacturers in China failed. AAK hydraulic valve was also eliminated by customers 2 years ago because the durability test of hydraulic pressure valve failed to meet the standard. AAK has increased research and development on the sealing ring. After more than thousands of tests in half a year, AAK chose to use a special PU polyurethane rubber sealing ring from Japan to overcome this technical problem. Its wear resistance and high pressure resistance are far better than other rubber sealing rings. The vast majority of domestic hydraulic valve manufacturers use rubber sealing rings, and the maximum limit of their durability test is 20,000 times. Kate realized that AAK was technically different from the other domestic peers, and the price was cheaper than that of American hydraulic valve manufacturers. She happily chose the AAK hydraulic valve with the highest cost performance. AAK hydraulic valve has advantages only by comparison. You can also have a small try. https://www.aakindustry.com/info-detai , l/hydraulic-pressure-control-valve-aak122

This week, we’d like to introduce a hydraulic solenoid cartridge valve equivalent to HydraForce SV16-21. It is a solenoid-operated, 2 way, normally open, poppet-type, screw-in hydraulic cartridge valve, designed to function as a load-holding or blocking valve in applications requiring low internal leakage. Last week, we received an inquiry from an American customer Andrew for 100 pcs of hydraulic solenoid cartridge valve SV16-21. As usual, we quoted one price for 10 pcs of test order, and another price for 100 pcs for his regular order. Surprisingly, Andrew said that if we can give a 10% discount, he will place the order for 100 pcs of SV16-21 directly. Few new customers place orders directly without testing samples. After communication, we learned that his friend introduced AAK to him and the friend already tested the manufacturing quality of AAK. Then we knew that he was introduced by our another American customer Richard, who ordered 500 pcs of SV16-21 last August. Previously, Andrew purchased this solenoid cartridge valve SV16-21 from another hydraulic cartridge valve manufacturer in Ningbo China, the price is 10% lower than AAK, but the quality is not stable as expected. One he knew that Richard is very satisfied with the quality of AAK hydraulic cartridge valves, he wanted to switch the order to AAK but wanted to get the same price as his old manufacturer. To appreciate his trust in AAK and the introduction of our old customer Richard, finally, we offered a 5% discount, which is very close to the price that we offered to Richard for 500 pcs qty.   AAK hydraulic solenoid cartridge valve E-SV16-21 two advantages: 1. Pressure Rating 207 bar (3000 psi), benchmarking HydraForce 2. Its service life is 2 times that of its domestic peers Technical parameters of AAK E-SV16-21 solenoid cartridge valve: Max. Operating Pressure: 207 bar (3000 psi) Flow: See PRESSURE DROP VS. FLOW graph Internal Leakage: 3 drops/min at 207 bar (3000 psi) Cavity: 16-2   AAK E-SV16-21 hydraulic solenoid cartridge valve, benchmarking HydraForce SV16-21, its service life is 2 times that of its domestic peers. You are welcome to give it a try. AAK HYDRAULIC CARTRIDGE VALVES (719) 2023-11-20 https://www.aakindustry.com/info , -detail/solenoid-cartridge-valves-aak719

Ibeamaka is from a hydraulic equipment company in Pakistan, and has been in the hydraulic industry for 3 years. At the beginning of last year, their hydraulic packer was complained by customers. The leakage of the hydraulic cartridge directional control valve in the system caused the equipment to work weakly, which was caused by the wear of the valve spool end. The original manufacturer of the hydraulic cartridge directional control valve said that because the system was opened and closed frequently, even if the valve spool of the bearing steel was worn, it was inevitable, so the service life of the hydraulic cartridge directional control valve could only be within 1 year. The boss was not satisfied with the original manufacturer's after-sales guarantee of more than 9 months, and requested to change the manufacturer, and the service life of the hydraulic cartridge direction control valve should not be less than 18 months. 1 week later, only one hydraulic cartridge valve manufacturer was willing to sample, which made Ibeamaka more worried. Ibeamaka searched the website of AAK hydraulic valves on Google and noticed many customer cases about the service life of AAK hydraulic cartridge valves. He sent an email asking if AAK can customize the hydraulic cartridge direction control valve and the service life shall not be less than 18 months. According to his drawing of hydraulic cartridge directional control valve, he also specially reminded that the original manufacturer’s problem on the valve spool. I told him that the hydraulic cartridge directional control valve spool of the original manufacturer was probably deformed after heat treatment, showing warping at both ends. During finishing, the end protective layer was removed, which affected the wear life of the valve spool. 5 years ago, AAK learned a similar lesson and has already upgraded the process. The valve spool is free of wear and has a service life of more than 18 months. Ibeamaka quickly sent an order for 120 hydraulic cartridge directional control valves. Last week, Ibeamaka sent an email. The hydraulic packers that used AAK hydraulic cartridge direction control valves had been working for 18 months. There was no complaint about the leakage of the hydraulic cartridge directional control valves. The boss was very satisfied. AAK hydraulic cartridge directional control valve spool is wear-resistant and durable, and its service life is twice that of the original manufacturer. It is due to the optimization of the process and 3 tricks in the processing process: 1. The spool of the hydraulic cartridge directional control valve is provided with a longitudinal main body of several bosses and two end faces at intervals. The included angle between the transition surface between the end of the valve spool and the adjacent boss and the axial direction of the valve spool is 5 degrees. This processing is particular, and most hydraulic cartridge valve manufacturers cannot control the accuracy. 2. The surface treatment layer of the hydraulic cartridge directional control valve spool forms a rotary machined surface. 3. The valve spool is easy to deform during processing. On the premise of ensuring the overall size of the valve spool, AAK adopts rotary reducing material processing, which can effectively retain the surface treatment layer at the end of the valve spool, and is more resistant to wear and corrosion, with a service life of 18 months. AAK hydraulic cartridge direction control valve has unique skills for processing, and its service life is twice that of its peers. You can also try a small order! https://www.aakindustry.com/info-det , ail/directional-control-valves-aak447

AAK hydraulic valve block adopts multi edge particle cutting with diamond reamer, the accuracy can reach 0.002mm, and the surface roughness can reach Ra 0.2um, the precision is twice that of other hydraulic valve manufacturers, and there is no iron filings. Because the price of AAK hydraulic valve block is a little higher than that of peers, LIEBHERR excluded AAK from the supplier list. However, 3 months later, LIEBHERR still placed an order for the hydraulic valve block with AAK. This morning, I received an order for hydraulic valve block from Herta from LIEBHERR company in Germany, which was a little unexpected. Because this is the hydraulic valve block that AAK sent sample for 3 months ago. Since the sample was sent, there was no news about the sample. After several follow up emails, the reply was "unqualified". I asked about the reason why the hydraulic valve block was unqualified, but didn't get reply. Now I can't understand why the order comes to us 3 months later. Herta is mainly responsible for the procurement of hydraulic accessories of LIEBHERR. In the first half of this year, his company needed to purchase a batch of high-precision hydraulic valve blocks for hydraulic excavators. At that time, he selected 5 hydraulic valve factories to send samples to test the quality and conduct assembly tests. 3 months later, after comprehensive comparison, their technical team found that the test data of AAK hydraulic valve block was the best among the 5 hydraulic valve manufacturers. I asked Herta curiously why the reply he gave us 3 months ago was "unqualified". He replied that your quotation was unqualified and more expensive than the other 4 hydraulic valve manufacturers, so we judged AAK to be unqualified. After 3 months of testing, the technical team believes that AAK's hydraulic valve block has the highest precision, the strongest durability and the simplest follow-up maintenance. Although the price of AAK is a little higher than that of other suppliers, according to the comparison of various parameters, the hydraulic valve block of AAK can enable LIEBHERR to reduce the cost of subsequent maintenance, so the technical department designated AAK to supply this hydraulic valve block. Herta asked us why some parameters of AAK hydraulic valve block are twice better than those of peers? The high precision of AAK hydraulic valve block mainly comes from the diamond reamer used in AAK machining center, which is a multi edge particle cutting. In the reaming process, the chips are hidden between the diamond particles and thrown out via coolant flushing and high- speed rotation, so that the chip removal in the first step is complete. Herta said that the accuracy of AAK's hydraulic valve block is 0.002mm, while that of the other 4 hydraulic valve manufacturers are all 0.004mm or above, and the surface roughness of AAK hydraulic valve block can reach Ra 0 2um, and the processing diameters of the holes tend to be the same, which is why their technical team is convinced. AAK hydraulic valve block has 3 advantages. You will know it after 3 months of trial. You are welcome to try the order. https://www.aakindustry.com/info-det , ail/hydraulic-valve-block-aak120

Chavan, from India, recognized the manufacturing quality of AAK hydraulic cartridge valve, but did not quite agree with the price of AAK hydraulic cartridge valve. He always thought that the hydraulic cartridge valve in China was cheaper than that in India. He came to me only for the hydraulic cartridge valve that India could not handle. A few days ago, Chavan sent an email to us, it was a list of hydraulic cartridge valves of SUN and HydraForce, and needed us to give him an advantageous discount price. The reason is that China's foreign trade has declined and manufacturers are more hungry for orders. In fact, I have defined Chavan as a poor customer who can't afford to buy, so I didn't offer a price and replied directly: I have no ability to give discounts, but I have the ability to deliver high-quality hydraulic cartridge valves. Since re-open from CNY holiday, the foreign trade orders were obviously reduced. The 18 countries in Asia collectively declined by 20%, the ASEAN declined by 12%, of which the Chinese Mainland declined by 25.5%, and Taiwan declined by 28.5%. It can be seen from this that not a single country's foreign trade situation is severe. In fact, I don't like to discuss the macro economy because 99% of the global enterprises are small enterprises and 99% of the global bosses are small ones. Therefore, it is more universal to discuss small businesses or small bosses. The hydraulic cartridge valve capacity of AAK factory is not even a dime in the whole hydraulic cartridge valve industry in the world. Therefore, the macro economy has nothing to do with AAK hydraulic cartridge valve. It is important to establish this concept, or belief, which may determine the trend of a factory. Well, even if the macro economy is poor, and 80% of the factories in the global hydraulic cartridge valve industry have closed down: 1）Why can't AAK hydraulic cartridge valve be one of the remaining 20%? 2）Why can't AAK hydraulic cartridge valve become Top 1% in 20%? 3）Why can't AAK hydraulic cartridge valve be one of the factories with differentiation and original technology? I prefer to discuss the micro and specific aspects. A manufacturing industry, a manufacturing hydraulic cartridge valve enterprise, even if the entire hydraulic cartridge valve industry is difficult to make money, why should we finally draw the conclusion that "I will definitely not make money, or I will definitely close"? Can't you do well? Think about it, you have worked in this industry for so long, why can't you make a top 1% of the market that can't be subdivided more? This is not very difficult. Finally, I want to say that don't understand the world with your own understanding of the world. Everyone's business situation is not very good, which doesn't mean you can't do it well. On the contrary, I have to think of ways to do better than 80% of my peers. At least let AAK hydraulic cartridge valve have a good life. There are inquiries every day, orders every week, innovations every month, and progress every year. What do you think is the main reason why a person has worked in his own industry for many years, or more than 10 years, but has not been able to be anything? The answer is only one word: lazy. Once one person is lazy, diligence, training and dreams are all gone. All day long, you can only muddle through for a few years, 10 years, and decades, but you haven't become a top muddle. For muddle, there is also a realm. If you have not been anything in your whole life, you will be in vain. AAK hydraulic cartridge valve, makes a little progress every day, only a little, and has become Top 1% of 20% of the hydraulic cartridge valve industry. https://www.aakindustry.com/info- , detail/cartridge-valves-aak521

Early last month, I saw an email from Mark, the purchasing manager of hydraulic system of Caterpillar, an old friend of ours. The subject of the email is "I need help from AAK, I believe". After reading the email about hydraulic threaded cartridge valve, I understood Mark's embarrassment. A small less-known excavator designed by them at the beginning of this year was not smooth in the commissioning process, the response of the excavation part was slow and the power was not enough. After testing, the technical department found that the measured value of the maximum overflow pressure was lower than the specified value, so it was determined that there was a problem with the hydraulic threaded cartridge valve. Mark communicated with the original hydraulic valve supplier. The supplier mentioned that the hydraulic threaded cartridge valve was sampled according to their company's drawings, and all parameter tests were up to standard. The supplier told the fact. He then could only patiently communicate with the design department to see how to modify the hydraulic threaded cartridge valve design, but the design Department said that there was a problem with the installation of the technical team. The company's design and technology departments prevaricate with each other and Mark are caught in the middle, which is very embarrassing and time is also being wasted. If the boss is angry one day, it is estimated that all 3 parties will be criticized. AAK HYDRAULIC VALVE has always been Mark's most trusted supplier of hydraulic valves. I asked Mark to send us the original design drawings of the hydraulic threaded cartridge valve and the working condition requirements of existing equipment, as well as the problems and data encountered in commissioning. 3 days later, we replied to Mark that we have a new design scheme, and we are 90% sure that we can make the hydraulic threaded cartridge valve that meet the equipment requirements, but it will take 2-3 weeks. On the 3rd day after receiving our sample of the hydraulic threaded cartridge valve, Mark happily informed us that the technical department tested AAK hydraulic threaded cartridge valve, the equipment commissioning was smooth, and the reaction and power of the excavation part were normal. The technical department said that the large goods of this hydraulic threaded cartridge valve can only come from AAK, and other hydraulic valve manufacturers are unreliable. Caterpillar designers are also curious about how AAK HYDRAULIC VALVE redesigns this hydraulic threaded cartridge valve? AAK engineering team tried 30 times to design, sampling and make adjustment to find a breakthrough. A sealing ring groove is arranged between the oil replenishment outlet and the oil replenishment inlet of the oil replenishment valve seat of the hydraulic threaded cartridge valve. The oil replenishment valve seat is made into a cartridge valve body, a sealing ring is installed between the overflow valve seat and the rear end hole of the oil replenishment valve spool, and a spring with a set oil replenishment pressure difference is placed. For the hydraulic threaded cartridge valve with this structure, the excessive pressure oil can directly push the overflow valve spool from the oil replenishment outlet and automatically relieve the pressure. The whole overflow action is more direct and sensitive than before, and the pressure regulation response is fast, which protects the whole pressure system and the pressure is more stable. After knowing the whole process, the boss praised mark, rewarded him with an extra week's holiday, and suggested him to increase cooperation with AAK HYDRAULIC VALVE. His colleagues in the technical department and design department also admire him for taking the initiative to solve the dilemma of the hydraulic threaded cartridge valve, and Mark's prestige in the company is getting higher and higher. AAK is a designated hydraulic threaded cartridge valve manufacturer of Caterpillar. You can also have a small try. https://www.aakindustry.com/info-detai , l/hydraulic-cartridge-valve-aak121

This week, we launched a hydraulic cartridge needle valve benchmark SUN NCEB standard parts. This hydraulic needle valve is with reverse-flow check are fully adjustable orifices used to regulate flow. They are infinitely adjustable from fully closed up to the maximum orifice diameter. An integral high-capacity check valve provides unrestricted flow from port 2 to port 1. They are not pressure compensated. Because needle valves are non-compensating devices, the fixed orifice size will regulate flow through the valve in proportion to the square root of the pressure differential across ports 1 and 2. For this valve, we have full 5 options: NCEB-LCN, NCEB-LAN, NCEB-LEN, NCEB-LBN, NCEB-LDN. In 2022, a German customer ordered NCEB-LCN from AAK for 3 times. AAK hydraulic needle valve 2 major advantages: 1. Manufacturing quality, function and performance benchmark SUN. 2. But the price is less than 70% of SUN. Technical parameters of AAK E-NCEB Hydraulic Needle Valve: Maximum Operating Pressure: 350 bar (5000 psi) Capacity: 12 gpm (48L/min) Internal Leakage: 10 drops/min. Cavity: T-5A AAK hydraulic check valve, 3 key elements benchmark SUN NCEB, you can also give it a try. AAK HYDRAULIC VALVES (609) 2023-06-19 https://www.aakindustry.com/info , -detail/needle-valves-aak609