Tools & Hardware

For the leakage in the pilot-operated pressure control valves less than 2drops /min, Howard from Accupress in Canada, contacted more than 30 Chinese hydraulic valve manufacturers. Only AAK pilot-operated pressure control valves met the standard and replaced his local factory in the United States. Last year, the hydraulic shearing machine they listed sold well. The boss decided to mass produce it in Suzhou, China. However, the pilot-operated pressure control valve to be used in the hydraulic shearing machine was originally purchased in the United States, and the internal leakage is less than 2drops / min. If the pilot-operated pressure control valve is purchased from China, it will save money and time. While contacting some old suppliers, Howard is also looking for new manufacturers of pilot-operated pressure control valves. We also received Howard's inquiry. The email subject is: can you supply pilot- operated pressure control valves with internal leakage less than 2drops / min for our Suzhou factory? We thought it was a domestic purchase, so we politely refused. Until Howard's second email told us why he wanted to ship to Suzhou, and he contacted more than 30 Chinese hydraulic valve manufacturers, only two of them replied that they could try to make samples of pilot-operated pressure control valves with internal leakage less than 2drops/min, and there was no any reply from the other manufacturers. Howard asked if AAK pilot-operated pressure control valves could meet American factory standards? If not, the sample is meaningless. I told him directly that AAK had tested samples of pilot-operated pressure control valves with internal leakage less than 2drops/min for a German company some time ago. The pilot- operated pressure control valves can be refunded in full if our samples do not meet the standard. One month later, 30 pilot operated pressure control valves were sent to Accupress's Suzhou plant. Four weeks later, Howard sent an email saying that their engineers tested the pilot operated pressure control valves of AAK and two other manufacturers, and only AAK samples met the standard. Some parameters were higher than those of the original American factory, and those of the other two manufacturers did not meet the standards. In particular, AAK pilot operated pressure control valves caught up with and surpassed his American factory, which surprised him. AAK pilot operated pressure control valves can meet such requirements because of two reasons: 1、For the pilot operated pressure control valves, the matching clearance accuracy between the valve spool and the valve body directly determines the internal leakage of the whole valve. AAK has German Nagel precision honing machine. After honing, the dimensional accuracy of the cone plating of the valve spool and valve body of the pilot operated pressure control valve is IT7 ~ 4, and the surface roughness can reach Ra0.32 ~ 0.04μm, which can not be achieved by most of hydraulic valve manufacturers. 2、After assembly, AAK uses a special air pressure tester to detect the leakage of each pilot operated pressure control valve. Within the set pressure and time range, AAK judges the internal leakage according to the number of bubbles. However, most factories use the oil pressure test method. As I have known that there may be no more than three factories that can use special air pressure test. Howard told me privately that his boss appreciated his quick finding a supplier who could replace the pilot operated pressure control valves produced in American factory. Now his purchasing authority has been improved. AAK pilot operated pressure control valves, the internal leakage is less than 2drops /min. You are welcome to have a small try! https://www.aakindustry.com/info-detai , l/pressure-control-valves-aak191

5 years ago, engineer Mr. Liu worked at a hydraulic manifold manufacturer for 3 years before going to Japan for further studies, and then worked in SUN's China office for 2 years. Last week, engineer Mr. Liu approached me and wanted to start a new hydraulic manifold manufacturer. I know his technical skills can support a hydraulic manifold manufacturer, but a new hydraulic manifold manufacturer should not only focus on technology, but also consider the direction, business model, team, and product positioning of the hydraulic manifold manufacturer. I told engineer Mr.Liu that the choice was wrong and the effort was in vain. The direction is wrong, the harder you work, the more helpless you become. You don't necessarily have to focus on hydraulic manifolds, you can also make hydraulic valves and hydraulic motors. On the road to entrepreneurship, even a tech giant may not have smooth sailing. I shared how hydraulic manifold manufacturer AAK came step by step back then. The 1st level of AAK is to determine the direction. AAK has chosen hydraulic cartridge valves, which are the core components of hydraulic manifolds. In fact, most hydraulic manifold manufacturers start by producing manifold blocks, and then the core components - hydraulic cartidge valves are purchased externally. The 2nd level of AAK is creating models. The most important point: Who do you plan to do business with? Find out who your target customers are and who your competitors are. AAK is positioned as a customer group with quality standards and a focus on online platforms. By leveraging AAK's strengths and characteristics, we aim to establish customer trust online. At that time, most hydraulic manifold manufacturers only engaged in offline business, and domestic business relied on relationships or low price competition. The 3rd level of AAK is team building. All careers are created by humans. Initially, hydraulic manifold manufacturer AAK established a team based on 4 conditions: mutual trust, complementary capabilities, clear division of labor, and financial support. The 4th level of AAK is polishing the product. At the beginning, we treated SUN and HydarForce as benchmark objects, bought many of their hydraulic cartridge valves to disassemble, extracted each part of the hydraulic cartridge valve, materials used, technology, precision requirements, etc., and specified a production process sheet that meets the requirements of hydraulic manifold manufacturer AAK. Most hydraulic manifold manufacturers only focus on the surrounding factories, focusing on how to save costs and obtain orders. The 5th level of AAK is trust building. We focus on the online to tell customers what are the products of hydraulic manifold manufacturer AAK? What's the difference? How can we see this? How to make it easy for customers to see and remember you online. The 6th level of AAK is to give benefits. Most customers pay for the benefits, and AAK spreads online to attract new customers, while the core is how to bring value to existing customers. Most hydraulic manifold manufacturers are attracting new users while losing old ones, and this is the most taboo of hydraulic manifold manufacturer AAK. The 7th level of AAK is to lead a team. When the horn blows, the troops must keep up. For example, can AAK produce products that most hydraulic manifold manufacturers do not want to produce? For example, can AAK handle products that most hydraulic manifold manufacturers cannot handle? The basic qualities for doing business are reliability and turning "impossible" into "possible". Entrepreneurship is about achieving definite results in an uncertain environment. The journey of hydraulic manifold manufacturer AAK is not easy, difficult, and only we know it ourselves. Tired, tired, tired, still endure. AAK HYDRAULIC VALVES (747) 2023-12-30 https://www.aakindustry.com/info , -detail/hydraulic-manifold-manufacturers- aak74 , 7

Davis is an old customer from Germany. We met 3 years ago and he purchases hydraulic valves from AAK every year. In the second half of last year, Davis suddenly asked me: can AAK hydraulic valve blocks be as stable as the hydraulic valves? I feel that there is a problem with the hydraulic valve blocks he purchased from other manufacturers. According to the hydraulic valve block drawings sent by Davis, AAK engineers found that this hydraulic valve block is indeed difficult after review. In particular, the oil passage width of the hydraulic valve block is more than 2 times smaller than that of the conventional one, and some valve spool holes are multi segmented structure, which has high requirements for hydraulic valve block processing and iron filings cleaning. I told Davis that you will see the results in 40 days. One month later, AAK sent 5 samples of hydraulic valve blocks as scheduled. Strangely, 2 months later, there was no news from Davis about this hydraulic valve block. After a lapse of more than half a year, that is, last week, Davis sent an email to purchase 1,000 hydraulic valve blocks at one time. The stability of the hydraulic valve blocks must not be lower than that of the samples sent half a year ago. More than half a year has passed since proofing, suddenly, an order of such a big quantity for hydraulic valve blocks have been placed, which makes us happy and surprised. Davis informed that the hydraulic valve block samples provided by AAK have been tested internally. Half a year later, their engineers thought that the hydraulic valve block samples provided by AAK had passed the test, so they placed a large order of hydraulic valve blocks today. In fact, this is not their new order, but moved from the original hydraulic valve block manufacturer to AAK. The original manufacturer started shipping 2 years ago, but during these 2 years, users always complain that the burr of the hydraulic valve blocks pollutes the oil. Sometimes the burr of the hydraulic valve blocks causes the hydraulic valves to jam, which makes their after-sales personnel very embarrassed. They also tried to ask more than 20 new manufacturers of hydraulic valve blocks for solution, but none of them can guarantee 100% free of iron filings. They can only continue to purchase this hydraulic valve block from the original manufacturer. The boss was very unhappy and gave Davis half a year. If the burr problem of the hydraulic valve blocks cannot be completely solved, they can only purchase domestically from Germany in the future, even if the price is more than 60% expensive. AAK hydraulic valve blocks have withstood the test for half a year and Davis also completed the task given by the boss. Davis was also surprised. Later, he asked me: Why can't the original manufacturer solve it for 2 years and more than 20 manufacturers can't guarantee it 100%. How can AAK hydraulic valve blocks be 100% burr free? 1. AAK adopts German Alma ultrasonic, which is a sharp deburring tool. Its instantaneous high pressure can effectively remove the burr of the inner hole of the hydraulic valve blocks. 2. Then use the industrial endoscope to check all the hydraulic valve block channels again to ensure that there are no dead corners. 3. Then observe the inner hole of each hydraulic valve block with a high magnification microscope to ensure that it is 100% free of burrs and other impurities before packaging. AAK hydraulic valve blocks have unique skills in deburring. You are welcome to give it a try! https://www.aakindustry.com/info-detai , l/hydraulic-valve-blocks-aak190

Alek is from Poland and was annoyed when he first purchased hydraulic cartridge valves from Ningbo. In the second half of last year, they tested a hydraulic lift that used a hydraulic cartridge counterbalance valve purchased from a hydraulic cartridge valve manufacturer in Ningbo. When the load was lowered, the lift vibrated at low frequencies and the system was unstable. The customer was not satisfied with the prototype and requested that the hidden danger be resolved within 2 months, otherwise the order would only be cancelled. The original hydraulic cartridge counterbalance valve manufacturer reported that this function is a standard model benchmarking SUN Hydraulics and cannot be improved. Alek contacted other hydraulic cartridge valve manufacturers in Ningbo, but after a week, there was no result. Alek was upset. Alek contacted AAK through the introduction of peers. In my impression, AAK seems to have no Polish customers. I joked that your name Alek is very close to my company's name AAK. Perhaps it was God's arrangement to bring us together. According to his introduction, it seems that the SUN standard part of hydraulic cartridge counterbalance valve does not match his equipment system. Due to the inconvenience of changing the system, it is only possible to customize the hydraulic cartridge counterbalance valve to match the system. According to the schematic diagram of the hydraulic system provided by him, the peak pressure generated by load impact is relatively high. If the hydraulic cartridge counterbalance valve is buffered in a timely manner, it should be able to alleviate the vibration. After 50 days, AAK sent 10 samples of hydraulic cartridge counterbalance valves. 3 weeks later, Alek informed me that their lift prototype had been approved by the customer and asked me to wait for further news. 3 months later, yesterday, Alek sent us a PO for 300 hydraulic cartridge counterbalance valve. Their engineers are satisfied with AAK hydraulic cartridge counterbalance valve, the speed at which the lift loads are lowered, is well controlled, and the system is stable. AAK hydraulic cartridge counterbalance valve has no sudden change in the flow area, and can quickly and timely cushion the pressure peak generated by load impact, making the lift safer and energy-saving. 1. The valve seat of the hydraulic cartridge counterbalance valve is provided with a transversely penetrating through-hole, forming a valve seat connecting hole section, a valve seat connecting hole section, a valve seat transition hole section, and a valve seat sliding hole section. The apertures of the 4 hole sections decrease in turn, with a first oil port of the connecting section on the side wall of the valve seat, and a second oil port at the right end of the through-hole of the valve seat. 2. The valve sleeve of the hydraulic cartridge counterbalance valve is provided with a transverse through-hole to form a main hole section of the valve sleeve and a reduced diameter hole section of the valve sleeve. The outer wall of the valve sleeve is provided with a valve sleeve through-flow groove that communicates with the fourth oil port. 3. The valve spool is located in the main hole section of the valve sleeve and can be moved left and right to match the 2 valve spool reducing sections in the valve sleeve reducing hole section. The left side of the second valve spool reducing section is provided with a flange for opening and closing the valve seat transition hole section, and a valve spool throttle hole is located on the right side of the flange. When the pressure oil from the fourth oil port enters the valve spool of the first control chamber, the valve spool moves to the left, gradually exposing each radial orifice, and the overflow area can be reduced and increased. The hydraulic cartridge counterbalance valve can timely cushion the pressure peak generated by load impact. AAK hydraulic cartridge counterbalance valve, has a function that SUN standard part do not have, you can also try it! https://www.aakindustry.com/info-detail , /cartridge-counterbalance-valves-aak540

My friend, a hydraulic cartridge valve manufacturer, his daughter got married today, and invited me to the wedding banquet. Of course, I should bring a red envelope to congratulate him. This friend has been working as a hydraulic cartridge valve manufacturer for 20 years. We are both teachers and friends, and when encountering problems with hydraulic cartridge valves, we consult with each other, unlike other hydraulic cartridge valve manufacturers who without any contact with each other. Seeing his son-in-law, my heart sank. Apart from being handsome, there was more lack of confidence. Later on, I learned that this young man came from a rural area in the central region of China, with both parents being farmers and a relatively poor family. My friend's family, after all, has been a hydraulic cartridge valve manufacturer for more than 20 years and is considered wealthy. They only have one daughter. The marriage in China is more about "matching families". Marrying a family without money really worries me about my friend's daughter. The old Chinese saying goes: When getting married, if you are favored by wealthy people, you must marry the wealthy instead of the poor. Rich people have many choices but still want to be with you because they really love you, while poor people are with you because they have no choice. Although I don't quite agree with this paragraph, I am powerless to refute it. Younger people may think that this viewpoint is too secular and snobbish. When they get older, they may understand, but it's too late. Love is the romance of two strong people, not the bitter hatred of two weak people. I advise all girls that it is better not to marry than to marry a poor person. This is also established in the hydraulic cartridge valve manufacturer industry. I advise all hydraulic cartridge valve manufacturers that it is better to choose not to accept orders than to ship to poor customers. In today's society, if money is not in place, no matter how many advantages, they are also disadvantages. If money is in place, no matter how many drawbacks, they can be ignored. In school, if you are a top student, all other shortcomings can be ignored. If you are a bottom student, no matter how outstanding you are in other aspects, it is useless. Maugham also said: When you marry a poor person, you will be responsible for his ignorance, debts, disasters, and all his misfortunes, wrong thoughts, as well as the ignorance, laziness, and chaos of his family. You will be responsible for it, and with what? Take responsibility for the cost of your life, wealth, career, and future. Marrying a poor person requires personal dedication and the intention to never turn around. Women who marry poor families will suffer the hardships and hardships of life. Both physically and mentally, you will be under tremendous pressure, thinking all day long about how to live a good life, saving money for children to study, unwilling to buy new clothes for yourself, and watching others' faces to work. The girl who originally loved beauty and gentleness was forced by life to become a tough woman. Marriage is not a child's play. When choosing a marriage partner, it is important to keep eyes open. Marriage cannot only focus on money, but it is absolutely not workable without money. The business of hydraulic cartridge valves is not a game. When choosing customers, it should be cautious. Hydraulic cartridge valve manufacturers cannot only focus on money, but it is definitely not workable not to talk about money. Every woman has an opportunity to make herself happy, and this opportunity depends on herself to strive for. Every hydraulic cartridge valve manufacturer has an opportunity to make money, and it is up to them to seize this opportunity. Hydraulic cartridge valve manufacturer AAK, never makes small moves under the table, targets customers who are suitable match, and only accept orders from customers who can afford it. AAK HYDRAULIC VALVES (632) 2023-07-21 https://www.aakindustry.com/info , -detail/hydraulic-cartridge-valve- manufacturer , s-aak632

German customer David has been purchased hydraulic relief valves in Ningbo in a same factory. At the beginning of last year, David purchased a batch of hydraulic relief valves for crane system in AAK because the original supplier was not able to meet the delivery. He sent an email last week saying: "with AAK hydraulic relief valves, the stability is 8% higher than that of the original supplier, and there is almost no external leakage". This surprised him. The use experience of AAK hydraulic relief valves has benchmarked with their previous local hydraulic relief valve manufacturers in Germany. The vast majority of hydraulic valve bodies are made of nodular iron, vermicular iron and gray iron and cast with resin sand as the molding medium. Therefore, there is sticky sand in the casting, which is easy to pollute the oil system and block the valve and filter, which is the key factor affecting the stability of hydraulic relief valves. Most of the common sand cleaning methods of hydraulic relief valves used in the industry are shot blasting and electrochemical sand cleaning, all of which have limitations. 1. Shot blasting can not completely remove the sticking sand from the valve hole with complex structure and small oil passage, which is easy to affect the tightness and product accuracy, and is not conducive to the stability of the hydraulic relief valves. 2. Electrochemical sand cleaning can relatively remove the sticky sand in the narrow oil passage, but it has high energy consumption, high operation intensity of workers, easy to have human errors, can not completely remove the sticky sand, and is not conducive to the stability of the hydraulic relief valves. Improving the quality of hydraulic parts processing process, improving the cleanliness level and ensuring the stability of hydraulic relief valves has always been the hard index of AAK hydraulic relief valves. Auxiliary processing of hydraulic parts mainly includes: sand cleaning of valve body, deburring or residue treatment of parts and cleaning of hydraulic parts. How does AAK do the sand cleaning of hydraulic relief valves? AAK technical team has continuously improved the sand cleaning process of hydraulic relief valves after years of technical improvement. For the sand cleaning of small complex castings, AAK has its own unique AAK sand cleaning 5 methods, namely: artificial aging - Pickling - rinsing - rust prevention - ultrasonic cleaning. Artificial aging is used to reduce the binding force between the casting and sand, acid pickling is used to remove the oxide skin at the joint between the sand and the casting to peel the sand from the casting, and then the explosion of compressed air during ultrasonic cleaning is used to peel off the sand, so as to achieve the purpose of sand cleaning. AAK has its own unique advantages of AAK sand cleaning 5 methods: (1) it is less affected by the casting structure; (2) it is carried out before machining and does not affect the arrangement of machining process; (3) although it has a certain impact on the environment, antifogging agent is added during pickling to reduce the impact. At the same time, corresponding corrosion inhibitor is added during pickling, and rust prevention treatment is carried out immediately after rinsing to ensure the stability of hydraulic relief valves. This is also the reason why the stability of AAK hydraulic relief valves is more than 8% higher than that of other manufacturers. The stability of AAK hydraulic relief valves comes from AAK unique and efficient sand cleaning methods. You are welcome to try an order! https://www.aakindustry.com/info-det , ail/hydraulic-relief-valves-aak189

Philip comes from a hydraulic equipment company in Italy. He has purchased hydraulic pressure reducing valves in China for several years. He is also an old customer of AAK. At the beginning of last month, Philip emailed that there was a problem with the hydraulic pressure reducing valves he purchased elsewhere at the beginning of last year, and the company had to pay a lot of money after sales. The boss had big disagree opinion on him. After further communication, we learned that in order to reduce the purchase cost by 17%, he did not choose AAK and purchased hydraulic pressure reducing valves from another factory. The crane sold by Philip’s company suddenly increased the load of variable displacement pump during operation, resulting in the control failure of the whole hydraulic system. Under normal circumstances, the hydraulic pressure reducing valve of the variable displacement pump as the emergency safety valve is in the normally closed state. This time, the pressure of the variable displacement pump cannot be released due to the jamming of the hydraulic pressure reducing valves, resulting in the collapse of the system. The customer requests to replace the hydraulic pressure reducing valves on the equipment and compensate the cost of work delay on the construction site. Philip asked the original manufacturer to replace the hydraulic pressure reducing valves. The manufacturer said that the hydraulic pressure reducing valves have been used for more than half a year. The problem of the valve spool sticking is caused by sundries in the hydraulic oil used by the user. At present, this model of hydraulic pressure reducing valves is not in stock, and it will take at least more than a month to re produce. I asked Philip to send me the model and parameters of this style of hydraulic pressure reducing valves. After analysis, AAK engineers found that the hydraulic pressure reducing valves needed by Philip was exactly the same as that ordered by one of our Russian customers last time. We have it in stock. The next day, AAK sent 20 hydraulic pressure reducing valves to Philip by air express. After receiving them, he asked the after-sales engineer to replace it on site. As a result, everything was normal and the crane could operate smoothly. A week later, Philip sent an email saying that thanks to AAK hydraulic pressure reducing valves, which saved the company a compensation. The boss also appreciated AAK for its help and suggested Philip list AAK as their preferred supplier of hydraulic pressure reducing valves. The price of AAK hydraulic pressure reducing valves may be a little higher than that of its counterparts in Ningbo, but you have no worries when using it. AAK knows that the hydraulic pressure reducing valve is the soul of this crane. Therefore, AAK controls the production quality of the hydraulic pressure reducing valves strictly, so that customers can buy it at ease and use it at ease. AAK hydraulic pressure reducing valves have two absolute advantages and has already surpassed its domestic counterparts. 1. AAK has a high-precision CNC machining center imported from Switzerland and various independent fixtures upgraded and refitted by itself, which eliminates human errors and avoids valve spool sticking and other faults. 2. The independent professional R & D team, combined with unique R & D technology, has realized the personalized customization demand of hydraulic pressure reducing valves, which can not be achieved by 95% of domestic peers. Peter told me privately that his boss asked him to send samples of the other hydraulic pressure reducing valves previously purchased to AAK for quotation. Even if the price is a little expensive, they should also choose AAK hydraulic valves which are more stable. They not only admire AAK's professional analysis ability, but also AAK's ability to solve difficulties for customers in time. AAK hydraulic pressure reducing valves, professional and whole-hearted, help customers solve problems in time. You are welcome to have a small try. https://www.aakindustry.com/info-detail/hy , draulic-pressure-reducing-valves- aak188

A while ago, our Russian client Erop said that they have sent me a hydraulic manifold block sample, and need the hydraulic manifold manufacturer AAK to check if we can achieve valve hole accuracy within 3μm. I replied that the shipping cost is high, just send the hydraulic valve block drawing. However, Erop said that he had checked with several hydraulic manifold manufacturers and they all reported that the oil circuit holes were complex and the drawings were too complex, samples were needed. However, Erop was not willing to send samples to these hydraulic manifold manufacturers. After further communication, it was found that a colleague of Erop tested this manifold block from another hydraulic manifold manufacturer. The accuracy of the valve hole is unstable, and some have exceeded 5μm. Now his colleague can't get it done with that hydraulic manifold manufacturer and can only seek help from Erop. The accuracy of the manifold block does not meet the standard, either the machining center cannot handle the accuracy, or the preparation work before processing is not done meticulously. This is a detail issue that is easily overlooked by most hydraulic manifold manufacturers. 5 years ago, hydraulic manifold manufacturer AAK suffered losses in this area. Our technical team optimized the production process and established a dedicated tool setting process before processing, with dedicated personnel responsible for it. Erop told me that the machining center of the original hydraulic manifold manufacturer can meet the accuracy requirements. I estimate that their technicians did not have any details about the tool alignment before processing, so I told Erop my guess. Erop is very interested in knowing how hydraulic manifold manufacturer AAK does it in this detail. For hydraulic manifold blocks with high precision and complex oil circuits, relying solely on machining centers will have potential problems. It must be assisted with experienced technicians. The Taiwan CNC machining center of hydraulic manifold manufacturer AAK has a stable transmission system and timely feedback system, which lays the foundation for precision machining, especially the structure of 6-disc bearings, which guarantees accuracy and stability. At the same time, its NSK screw also helps with processing stability. Before processing, hydraulic manifold manufacturer AAK has specialized technicians to position the tool. Firstly, manually remote control the tool to the valve hole, then locate the specific position of each tool. Based on the input system position data, the system will provide timely feedback to guide the process without worrying about deviations. Finally, tighten each manifold block to be processed. This simple 3-step process can execute the tool alignment process without error, but most hydraulic manifold manufacturers may find it troublesome and overlook this detail. AAK hydraulic manifold manufacturer in Ningbo China, with details before processing, with an accuracy of within 3μm, you can also give it a try! AAK HYDRAULIC VALVES (746) 2023-12-28 https://www.aakindustry.com/info , -detail/hydraulic-manifold-manufacturers- aak74 , 6

Volute springs, designed&manufactured according to JB/T11698-2013 standard (SHANGHAI HEGONG participated in drafting the standard). Its main features are small size and large load. HEGONG Volute springs is widely used in small spaces and large loads for vibration reduction. It has three structures as Equal helix angle, Equal pitch, and Equal stress.

U-shaped spring for elevator safety gear also be known as "U-shaped spring", "safety gear spring", "elevator safety gear leaf spring", mainly be used for progressive elevator safety gear. Safety gear is the most important safety component in an elevator, the safety of the elevator just can be guaranteed with safe and effective safety gear. And the HEGONG safety gear spring is the core component of safety gear, it is the last barrier of elevator safety. When the elevator falls out of control and exceeds the limited speed, the U-shaped spring CHINA starts to work, which stops the lift car in emergency and clamps it on the guide rail, ensure the safety of the elevator passengers. We have been working closely with a number of well-known elevator manufacturers, and developed U-spring for a number of progressive safety gears successfully. If you have any questions, please contact us (Tech@DiscSpringsMFG.com), our technical engineers will work closely with you to design, develop the proper spring according to your requirements.

Wave springs also are known as "wave spring washers" are round elastic parts with several sine waves on the metal foil ring. There are several structures as the table, including "Single-turn wave springs with partially overlapping", "Single-turn wave springs with gap", "Closed Single-turn wave springs", "Multi- turn (Peak to Peak) wave springs", "Multi-turn (Peak to Peak) wave springs with Shim Ends", "Nested wave springs". Wave spring China is a precise elastic element, which is suitable for mounting in the parts with limited installation space and stiffness requirements that other elastic elements cannot meet. Due to its unique structural form, the total height and working height of the wave spring are lower than traditional elastic elements, so it can reduce the space size of the parts and the overall cost of the product, and has an excellent cost performance.

Serrated Safety Washers is a kind of Belleville Disc Spring with trapezoid cross section and serrations on both sides. Serrated Safety Washers is connected with bolt or screw, it can prevent bolt relaxation after vibration by increasing the friction resistance. Serrated safety washers China are available in two different types: S type is suitable for normal duty, available for screw sizes: M1.6 to M36. VS type is thicker and therefore achieves higher pretensioning loads, be used with high strength bolts, available for screw sizes:M5 to M36. m10 washer dimensions supplier surface Condition And Corrosion Protection: Polish Phosphating and oil Mechanical Zinc Plating Chemical Nickel Plating Docromet / Geomet Coating Electrophoresis If you require an item with different dimensions, material or surface treatment, please contact us (Tech@DiscSpringsMFG.com), our technical engineers will work closely with you to specify or design, and then manufacture the proper serrated safety washer for your application.

Flange Washers also be known as "Flange Bolting Washers", "Spring Washers", be used for the connection between flange and bolt. Its application equipment includes: Reactor, stirrer and heat exchanger flange bolts; Pumps, Fans, Centrifuge Flanges and Anchor Bolts; Power bus and copper alloy bolts;Pipe flange and valve flange bolt. Flange Washers are widely used in industries such as Petrochemical, Power, Metallurgy, Paper, Pharmaceuticals, Food Processing, etc. Bolt flange joints are widely used in pressure vessel and pipe connections, and Leakage is the main failure mode of bolt flange connections. The main causes of leakage includes: differential thermal expansion/contraction, vibration, bolt creep and vibration. By installing flange washers in bolt flange joints, the elastic potential energy stored in the China Flange Bolting Washers can be converted into mechanical energy, to compensate the deformation of gasket and bolt, to ensure the bolt preload meets the sealing requirements, prevent leakage. How do we choose the right flange washers? Firstly, choose size of wholesale flange washers according to the bolt model & required load value. Then select the suitable raw material further according to the application environment. Material such as H13, 17-7PH, Inconel 718 (see the material document for details) are available in case of high temperature, cryogenic (low temperature) and anti-corrosion environment.

PRODUCT DESCRIPTION Standard:F436 Description: F436 washers are commonly used in automobile manufacturing due to their strength and durability. These washers are specifically designed to meet ASTM specifications for mechanical, chemical, and dimensional requirements. They are hardened or carburized for extra strength and are smaller in size compared to standard F844 washers. Zinc plating is a popular choice for F436 washers used in automobile manufacturing. Zinc plating provides corrosion resistance, which is crucial for automotive applications where exposure to moisture, chemicals, and other harsh conditions is common. The zinc plating helps protect the washers from rust and corrosion, ensuring their longevity and performance in automotive assemblies. F436 washers with zinc plating are often used in structural work in conjunction with A325 and A490 bolts. These washers provide the necessary hardness and strength required for automotive applications, ensuring reliable and long-lasting performance. Material 45#/40CR Size 1/4"-4" Finish Plain/black/ZINC/HDG/Dacromet/Mechanical Galvanized Hardness HV300/HRC35-45 Marking can be Customized Application Constrution/Wind turbines/railway line Packing Carton+ pallet; we can pack washers as your requirements Terms FOB+shanghai/ningbo Delivery time 30-70days size Inner diameter(min) Inner diameter(max) Outside diameter (min) Outside diameter (max) Thickness (max) nominal size Thickness (min) 1/4" , ; 7.137 7.925 15.087 15.875 2 1.65 1.2954 5/16" 8.737 9.525 16.662 17.45 2 1.65 1.2954 3/8" 10.312 11.1 19.837 20.65 2 1.65 1.2954 7/16" 11.912 12.7 22.63 23.41 2 1.65 1.2954 1/2" 13.487 14.3 26.187 27.787 4.95 3.47 2.4638 9/16" 15.087 15.9 29.311 30.91 4.95 3.47 2.4638 5/8" 17.45 18.26 32.537 34.137 4.95 3.8 3.0988 3/4" 20.65 21.43 37 38.1 4.95 3.8 3.0988 7/8" 23.8 24.587 43.662 45.237 4.95 3.97 3.4544 1" 28.575 29.36 50.012 51.587 4.95 3.97 3.4544 1-1/8" 31.75 32.537 56.362 57.937 4.95 3.97 3.4544 1-1/4" 34.925 35.712 62.712 64.287 4.95 3.97 3.4544 1-3/8" 38.10 39.7 68.25 70.63 4.95 3.97 3.4544 1-1/2" 41.275 42.062 75.412 76.987 4.95 3.97 3.4544 1-5/8" 44.45 46.01 80.99 84.11 7.1 6 4.53 1-3/4" 47.63 49.23 84.12 87.29 7.1 6 4.53 1-7/8" 50.80 52.36 87.34 90.46 7.1 6 4.53 2" 53.98 55.58 93.65 96.81 7.1 6 4.53 2-1/4" 60.33 61.93 100 103.16 8.62 7.3 6.1 2-1/2" 66.68 68.28 112.7 115.86 8.62 7.3 6.1 2-3/4" 73.03 74.63 125.4 128.56 8.62 7.3 6.1 3" 79.38 80.98 138.1 142.82 8.62 7.3 6.1 3-1/4" 85.73 88.9 149.23 155.52 8.62 7.3 6.1 3-1/2" 92.08 95.25 161.93 168.22 8.62 7.3 6.1 3-3/4" 98.43 101.6 174.63 180.92 8.62 7.3 6.1 4" 104.78 107.95 187.33 193.62 8.62 7.3 6.1 Products pictures for Flat washers F436 Washer/Flat Steel Washer, 1/4" - 4", Zinc Plated/Dacromet 0F436 Washer/Flat Steel Washer, 1/4" - 4", Zinc Plated/Dacromet 1F436 Washer/Flat Steel Washer, 1/4" - 4", Zinc Plated/Dacromet 2F436 Washer/Flat Steel Washer, 1/4" - 4", Zinc Plated/Dacromet 3