Offers to Sell

Bemus is from a hydraulic equipment manufacturing company in Greece. As an old purchaser, he has been working smoothly, but had trouble with a hydraulic directional control cartridge valve. In the second half of last year, they wanted to test a hydraulic power unit for drilling equipment. The shaking was serious during the equipment commissioning, which was caused by the sudden impact of the hydraulic directional control cartridge valve under the high- pressure closed circuit. The original hydraulic directional control cartridge valve manufacturer explained that the hydraulic system pressure was too high. Their engineers asked Bemus to re-purchase the hydraulic directional control cartridge valves. After a week, there was no result. Bemus was worried. Bemus found AAK in B2B and left a message on our website: How to make the hydraulic directional control cartridge valve without impact under the high- pressure closed circuit? After several rounds of communication, we learned the above problem that he encountered in purchasing of the hydraulic directional control cartridge valves. According to the video of equipment abnormality and the production drawing of hydraulic directional control cartridge valve sent by him, AAK engineer was 90% confident to eliminate the abnormality caused by the impact force. Bemus requested AAK to make samples. After 50 days, AAK sent 12 samples of hydraulic directional control cartridge valves. 6 weeks later, Bemus said that the trial run of their equipment was successful and the prototype had been delivered to the customer. AAK hydraulic directional control cartridge valve, based on the unloading valve spool, made 3 small changes to achieve pressure release. The optimized hydraulic directional control cartridge valve reduces the oil pressure in the high-pressure closed circuit and avoids sudden impact. Its stability can better control the equipment operation. 1. The unloading valve spool is arranged in the valve spool, and the control piston is connected with the push rod. The control piston can open the valve spool, and the inlet and outlet are connected, thus realizing reverse flow. 2. The unloading valve spool is connected with the spring seat, one end of the spring is fixedly connected with the top of the valve body, and the other point is connected with the spring seat. When there is no pressure oil in the control oil port, the pressure oil can only flow from the passage port to the outlet, and cannot reverse flow. 3. The bottom of the unloading valve spool is processed into a "convex" shape, which plays the purpose of unloading before the valve spool. When the pressure at the outlet is high, the control piston pushes the unloading valve spool first. When the pressure at the outlet decreases, the unloading valve spool connects the inlet and outlet. AAK hydraulic directional control cartridge valve, no impact force, and stable, you can also try it! https://www.aakindustry.com/info-detail , /directional-control-cartridge-valves- aak506

ER-MG2-300/400, a Navigation Grade MEMS gyro sensor up to 400deg/s measurement range and 0.05°/hr bias instability, is specially designed for precision attitude & azimuth measuring, positioning, navigating, guidance in high performance IMU /AHRS/ GNSS-aided INS, aerial/marine/land mapping/survey system/UAV/AUV and navigation grade MEMS weapon system. With the high dynamic measurement range and high precision, ER-MG2-300/400 is a cost effective, robust, reliable, small size, light weight, low power, most suitable replacement of medium-low navigation grade FOG/DTG with high dynamic azimuth & attitude measuring , inertial positioning and navigation function in aerial, marine manned, or unmanned carriers. The ER-MG2-300/400 High Precision Navigation MEMS Gyroscope is a single-axis MEMS angular rate sensor (gyroscope), capable of measuring angular velocity up to a maximum of ±400°/s with digital output compliant to SPI slave mode 3 protocol. Angular rate data is presented as a 24-bit word. The ER-MG2-300/400 with an advanced, differential sensor design rejects the influence of linear acceleration, enables to operate in exceedingly harsh environments where shock and vibration are present. The ER-MG2-300/400 is available in a hermetically sealed ceramic LCC surface mount package, and is capable of operating at 5V supply and a wide temperature range (−45°C to +85°C).

The supplier who has cooperated for 3 years has failed to test the hydraulic cartridge flow control valve for 3 times. After AAK took over, the accuracy requirements were met at one time for the sample. The surface roughness of the inner hole of the hydraulic cartridge flow control valve was 0.15, and the cylindricity error was controlled within Φ0.003mm, the operating efficiency of the hydraulic system was also improved from 5% to 10%. Brand finally came to the sunny day from the rainy day for more than 30 days. Brand is from Brazil. In March this year, he sent me an inquiry for customized high-precision hydraulic cartridge flow control valve. The surface roughness of the inner hole is Ra0.2, and the cylindricity is Φ 0.003mm. Compared with the conventional hydraulic cartridge flow control valve, the precision is improved by nearly 10%. The cylindricity and the surface roughness of the inner hole are the core of the valve hole precision. There are no more than 5 hydraulic cartridge valve manufacturers in Ningbo that can successfully sample at one time. Seven days later, Brand told AAK that the price was 20% higher than that of the other hydraulic valve manufacturers. With such a large difference, I knew that there was no comparability. The price and hydraulic cartridge flow control valve were visible, but the manufacturing quality was invisible. 40 days later, Brand asked by email how long it would take to sample the hydraulic cartridge flow control valve quoted last time. I was a little surprised. After communication, we learned that the he chose the manufacturer who has cooperated with them for 3 years to make samples for this high precision hydraulic cartridge flow control valve, but proofing failed for 3 times. There was still a 5% discrepancy on the surface roughness and cylindricity of the inner hole of the hydraulic cartridge flow control valve, which could not be achieved all the time. Their engineer blamed brand for poor procurement, and the boss was also unhappy with him. I told him that an American customer of AAK encountered similar problem a month ago, AAK solved it for him. When Brand learned of our successful case, he saw hope and was relieved. After 20 days, the samples of hydraulic cartridge flow control valve were sent successfully 2 weeks later, Brand informed that the surface roughness and cylindricity of the inner hole of the AAK hydraulic cartridge flow control valve and the accuracy parameters not only met the standard, but also improved by more than 10% compared with their original requirements. What's more surprising is that the overall operating efficiency of the system was also improved from 5% to 10% when the AAK hydraulic cartridge flow control valve was installed, which surprised their engineers. We were also complained about the surface roughness and cylindricity of the inner hole 5 years ago. Now AAK uses rolling technology to replace the traditional cutting method, uses rollers to roll the metal surface, flatten the convex part of the surface, and make the concave part bulge, and then process it into a smooth surface like mirror. The details of rolling technology need skills. The surface roughness of the valve hole processed by an old experienced craftsman will be nearly 1% higher than that of grinding, which is why we can reach Ra 0.15, and the cylindricity error is controlled within 0.003. After the working face is hardened, the wear resistance and fatigue strength are increased, which is also the advantage and feature of this process, but it requires experience to master it skillfully. AAK hydraulic cartridge flow control valve, high precision, high efficiency, welcome to try! https://www.aakindustry.com/info-detai , l/hydraulic-cartridge-flow-control- valves-aak3 , 62

What is the analogy for the relationship between the sales personnel of hydraulic manifold manufacturers and the buyers of importers? The teacher- student relationship may be the most appropriate. A few days ago, my leader complained about the teacher of his son. He asked the teacher twice, 'How has my son been doing at school lately?’ but did not get reply. I was stunned for a moment and suddenly remembered, a few years ago, I also asked customer Lina such a silly question, ‘How did Heidi, a sales representative of hydraulic manifold manufacturer AAK, communicate with you?’ Chinese elementary school teachers need to manage a class of 40 or 50 students, and they can only remember a few children who are particularly obedient or mischievous. For those they are not paying attention to, how can the teachers answer you? Besides, what about your child? Don't you have any idea? There are also questions like this that require the teacher to report to you, which can easily cause the teacher's aversion. Just like I asked Lina, ‘how did Heidi from hydraulic manifold manufacturer AAK communicate with you?’ This kind of question is impolite, and the customer basically responds perfunctorily. The correct way to open it is: Lina, Heidi from hydraulic manifold manufacturer AAK, thinks too much. Every time I communicate with her, I feel too tired. She has been bothering you lately, thank you.’ The very interesting aspect of human nature is revealed at this moment, and Lina is likely to deny or comfort me, saying, 'It's not as exaggerated as you said, but it's actually okay.'. The teacher-student relationship in school is the same. For parents of mischievous children, the correct communication posture with the teacher is not to praise their children, but to belittle them, so that the teacher understands that you know how troublesome your children are, and the teacher has to work harder for your children than other children. Implying a kind of understanding towards the teacher, it is naturally welcomed by the teacher. In business, when it comes to bringing people closer, sometimes a few thoughtful words may make them realize your uniqueness. Of course, to be a blacksmith, you need to be tough yourself. If the manufacturing quality of hydraulic manifold manufacturers is unstable, no matter how good customer relationships are, they cannot withstand the test of time. Managing the relationship with the teacher well can definitely add points to the child's future. Similarly, if hydraulic manifold manufacturers handle customer relationships well and reach a consensus on trust, placing orders becomes easier. Hydraulic manifold manufacturer AAK, focuses on manufacturing quality and also has the correct communication posture. AAK HYDRAULIC VALVES (693) 2023-10-15 https://www.aakindustry.com/info , -detail/hydraulic-manifold-manufacturers- aak69 , 3

ER-TS-32600-Modbus Features: 1. Dual axis monitoring (single axis optional); 2. Full range accuracy 0.01°, resolution 0.002°; 3. Volume (94*74*64mm) (customizable). ER-TS-32600-Modbus High Performance Wireless Transmission Tilt Sensor is a wireless inclination sensor with ultra-low power consumption, small size and high performance, which is aimed at the industrial application of users without power supply or real-time dynamic measurement of object attitude angle. Powered by lithium battery, based on Internet of things technology Bluetooth and ZigBee (optional) wireless transmission technology, all internal circuits have been optimized and designed, and various measures such as industrial MCU, three proof PCB board, imported cable, wide temperature metal shell are adopted to improve the industrial level of the product. With good long-term stability and small zero drift, it can automatically enter the low-power sleep mode, so as to get rid of the dependence on the use environment. The product has compact structure, precise design, recompensation for temperature and linearity, and integrated comprehensive protection functions such as short circuit, instantaneous high voltage, polarity, surge, etc. it is simple and convenient to use. The wireless digital signal transmission method eliminates the cumbersome wiring and noise interference caused by long cable transmission; The industrial design has extremely high measurement accuracy and anti-interference ability. The wireless sensor nodes can form a huge wireless network, support thousands of measuring points to monitor the inclination at the same time, and support professional computer software. Without field survey, it can measure and record the state of the measured object in real time; The safety monitoring system is suitable for remote real-time monitoring and analysis of industrial sites, dilapidated houses, ancient buildings, civil engineering, tilt deformation of various towers and other needs.

Guard Tour System Online 4G GPS With Free Guard Management Cloud Software and APP With the progress and development of the society, the requirements of the community for its management work are becoming more and more scientific and technological, and the responsibility requirements of regular inspection and maintenance personnel are also becoming higher and higher. The timely elimination of hidden dangers and prevention is what any manager hopes. Advantages Why Choose Realtime Guard Tour System HUA-K2? Basic Functions 1. Can upload data to cloud management software in real time through network, you should insert SIM card, the device supports 4G network and 2G network, it's optional, send data more quickly. No need USB cable to transmit data, it's too troublesome and risky 2. IP68, waterproof and drop resist. ABS+PE double color injection molding 3. Anti-destructive magnetic suction interface, more durable than ordinary charging port 4. Send patrol record to supervisor's email daily Optional functions 5. Alarm clock. You could set many clocks to remind patrolman. The device will ring at that time you set 6. GPS. Can view patrolman's realtime location and historical track in web- based software 7. SOS alarm. The device with a SOS button, long press it, it will send a signal to cloud software, the red bounced will pop out in the screen and ring to remind the supervisor Specifications Parameter< , br>Dimension 57*86*28 (mm) Weight 100g Read mode RFID 125 khz Read distance 3-5 cm Read prompt Light + beep Read time Less than 0.3 seconds Battery type 3.7V rechargeable lithium battery Battery capacity 1,800 mah Battery life A full charge will support about 25 days each 200 readings per day Charging time About 5 hours Storage 60,000 records Communication GPRS real-time upload data to cloud software Network 4G network or 2G network, optional What will be included in per set? 1 patrol reader HUA-K2 4G GPS device 1 cloud management software 1 back clamp 1 charging line and 1 charging plug 1 certification 10 checkpoints 2 ID tags

GPS Guard Tour System Real time Android Face Recognition Security Equipment Personal Advantages of Face Recognition Guard Tour System 1. 4G/WIFI GPS Walkie Talkie Guard Tour System with Face Recognition 2. High Tech Face ldentification. We are the first guard tour system manufacturer who integrate face identification feature with guard patrol clocking device.  3. Login the device easily through face verification, to avoid alternative patrol effectively. 4. Represent the report with various forms. 5. Check the report data on PC management platform. 6. Know Patrol Performance Whenever And Wherever. To prevent the lazy know missed patrol at a glance. 7. Visually know the actual patrol track of the guard. Our New Feature: Face Verification! As a manager, do you want to be able to confirm exactly which guard is following each patrol, and whether it is indeed the intended one? We often get feedback from customers that the guard doesn't actually complete the patrol, or that sometimes, without the manager's knowledge, he shares his equipment with people on his shift. From now on, you can combat this with the new facial verification feature we've just added. In addition, we also provide other high quality products, including RFID Guard Tour System and Touch Guard Tour System. Why Choose Face Verification Guard Tour System HUA-K4? 1. Face identification. The mobile app device has face identification feature for guards to login patrol app easily and quickly 2. Software walkie talkie. No distance limit, just need internet. Could control talk group in software 3. GPS+Glonass+Beidou accurate localization. Know where your guards are now and their moving track during patrol hours 4. Front and rear HD double-camera. Record patrol scene clearly if any problem and emergency 5. Perfect problem reporting, progress tracking and feedback process 6. SOS alarm. One key sos alarm to trigger software alarm and SOS call 7. 2G/3G/4G/Wifi realtime remote data transmission. Instantly know what's going on no matter how far away you are. 8. Multi-site and multi-personnel management. Let the management work more centralized, more convenient 9. Various customizations are supported Specifications of Face Recognition Guard Tour System Product Name 4G/Wifi GPS Walkie Talkie Guard Tour System With Face Recognition Model HUA-K4 Color Black Dimension 138*70.6*21.3mm Weight 280g Structure Straight type Anti-fall 1.5M Operation system Android 10.0 Processor MT6739 1.5Ghz*4 Screen size 3.97" Screen Material TFT Solution ratio 480*800 Touch screen glass Corning Touch screen points ≥5 Touch screen technology Capacitive Rear Camera 8M Front Camera 2M Battery 5000mAh non-removable rechargeable Li battery Supported network 2G/3G/4G/Wifi Working temperature 0°C to +60°C Welcome Friends All Over the World to Wholesale Our Face Recognition Guard Tour System! HUA ELECTRONIC often attend exhibitions all over the world, welcome to our booth and try our products if we attend a exhibition in your country one day. In addition, we are the only manufacturer with invention patent in China patrol system industry. HUA adheres to the concept of "doing excellence first, based on credit, and trustworthy growth", and will make every effort to provide face recognition guard tour system for new and old buyers at home and abroad. In addition, we also provide customized services. You can customize your own logo. If you are interested in our face recognition guard tour system, we would be happy to have your specific requirements. We will try our best to meet your requirements. As your closest guard tour system supplier, we look forward to your email. Come and contact us!

Touch Probe Patrol Guard Tour System Security Waterproof Stainless Steel Guard Tour System Why Choose Stainless Steel Guard Patrol System with Touch Probe HUA-101X? One can use it for property company, security company, school, factory, mining, petrochemical, tobacco company, express industry, public transportation industry and museum industry. Additionally People are making use of it for gas industry as well. Its widely usage has been seen in hospitals and electric check industries. Moreover, there's is nothing you can't think of, nothing it can't do. It is unique from other products because of its stainless quality. Yes, stainless material make it more durable and long last to use. Additionally, it comes up with amazing battery that keep it working for almost 15 days continuously just by doing a full single charge. So what else you want more? Specifications Parameter Di , mension 176*32*25(mm) Weight 215g Read mode touching Read distance 0cm, must touch checkpoint Read time less than 1s Read prompt Light+vibration(optional) Capacity 16MB, can store up to 10,000 records Battery 3.6V built-in lithium battery Working temperature -40℃-90℃ Software Stand-alone, multi-language, free What will be included in per set? 1 patrol reader HUA-101X device 1 data downloader 1 USB cable 1 cloud management software 10 checkpoints 2 guard ID tags Touch Guard Tour System is composed of patrol machine, patrol point and personnel button, and the statistical data in the terminal mainly includes computer statistics. At present, the intelligent patrol machines on the market mainly use automatic identification technology to eliminate the traditional wiring, which is also the expansion of all-in-one card equipment in the security field.  It can carry out scientific and standardized management on the work of patrol personnel, and is also conducive to the management of the work of patrol personnel by managers. The patrol machine plays an important role in ensuring safe production. Touch guard tour system inspection in safety production, for example, patrol machines are used in shopping malls, residential apartments and chemical places. After forming the patrol system, the cooperation of patrol inspectors is still needed to make the patrol machine fully used. More products view: https://www.huapatrol.com/touch-guard-tour-system/

RFID Guard Tour System Software Download Patrol Wand With Checkpoint Tour Management As we all know, the safety management of the community is very important, fire prevention, anti-theft, and so on many unsafe factors, such as due to the safety inspection personnel patrol inspection is not in place and cause safety accidents, the consequences are unimaginable. Advantages Why Choose LCD Display Guard Tour System HUA-101Z? 1. Digital display, show current time and record quantity 2. Last year, the maintenance rate is 0.3% 3. Can still work after being dropped from 5 meters high and soaked in water 4. Download data very quickly, only several seconds 5. Multiple reports to show what you'd like to know 6. Very simple to use - anybody can use it with a simple guideline. Specifications Parameter D , imension 165*42*25(mm) Weight 300g Read mode RFID auto-induction Read distance 3-5 cm Read prompt Light + beep or vibration Read time Less than 0.3 seconds Battery type 3.6V rechargeable lithium battery Battery capacity 16MB Battery life a full charge can support about 15 full days continuously reading tags Charging time About 5 hours Storage 60,000 records Communication USB, no need to install USB driver Working Temperature -20℃~70℃ What will be included in per set? 1 patrol reader 1 charger 1 USB cable 1 holster 1 certification 2 guard ID tags 10 checkpoints

Custom Software Security Guard RFID Patrol Wand Security Guard Tour Patrol Checkpoint System Working Principle of Security Patrol Checkpoint System The computer management software runs on the Windows interface, which can plan and set patrol routes, arrange effective patrol time, automatically analyze and process the staff's patrol work, generate work records and statistical reports, and facilitate, intuitive and efficient setting and record query. When the patrol personnel arrive at the patrol point, they will indicate the patrol signal of the defense area with silent alarm by means of buttons, card swiping and unlocking, so as to record the time when the patrol personnel arrive at each patrol point, the action of the patrol point and other information into the system. In the central control room, the patrol quality can be assessed by checking the patrol records, so as to determine whether the patrol has been carried out, whether the patrol has been bypassed or reduced, The increase of patrol interval and other behaviors have assessment vouchers, which can also be used to determine the approximate time of the case. Function of Security Patrol Checkpoint System 1. High quality plastic shell, light and strong. 2. Using GPS satellite positioning technology and RFID technology, the maintenance and construction costs are greatly reduced. 3. Wireless remote transmission technology is adopted to realize real-time tracking management. 4. The system is developed and designed according to the characteristics of patrol, patrol and inspection industry, and is highly professional. 5. The system software adopts GPS map technology and has powerful functions. 6. Fully charged, it can support about 15 days and read 200 times a day. Application of Security Patrol Checkpoint System The management center is located in the fire and security monitoring center on the basement, near the main walkways, stairwells, important places, etc. Main patrol point settings: The entrances and exits of each floor, the roof, the two farthest staircases, the computer network center/PBX machine room, the fire security control room, the financial office, the kitchen, the main engine room, the diesel generator room, the domestic water pump room, the fire water pump room, the reclaimed water treatment machine room, the water tank room, the underground and outdoor parking lot, the elevator hall, the outdoor walkway and the square. Later, the patrol points will be adjusted flexibly according to the hotel operation and management needs. The specific route can be determined according to the needs of the property, and the safety of the building can be ensured through the patrol of security personnel. Advantages of Security Patrol Checkpoint System 1. RFID monitoring system is an innovative security patrol management system solution, which can enhance a wide range of business functions and operations by introducing element accountability to remote and periodic human tasks. 2. The data collected by the electronic guard patrol system can be easily uploaded to the computer through the spring pin connector for generating reports and data analysis. 3. The reports generated by the Guard Patrol Monitoring System help at multiple levels. 4. The real-time security patrol system not only provides the real-time data of security personnel's patrol routes. 5. The security monitoring system also provides various key information about any missed checkpoint or emergency. 6. At the organizational level, enterprises can also benefit from the patrol scheduling and time tracking functions of the calendar module in the patrol management software. 7. Dust proof, waterproof and fall proof.

Cylindrical roller bearings are separable, easy to mount and dismount, feature more outstanding especially when they are used on bearings requiring interference fit between inner and outer rings with the shaft and housing. Cylindrical roller bearing is contacted with the revision line between the rollers and the raceway, which is of elimination of edge stress. Comparing with the ball bearings with same boundary dimensions, cylindrical roller bearings have larger radial carrying capacity. In structure, this type of bearing is more suitable for high speed rotation Cage material: When the outer diameter is less than (inclusive) 400mm, solid brass cage or steel press cage are adopted for single row cylindrical roller bearing. When the outer diameter is more than 400mm, brass cage and pin-type cage are adopted for four row cylindrical roller bearing. Cylindrical roller and race for line contact bearing. Load capacity is big, mainly bear radial load. Roller and ring guard friction small, suitable for high speed rotation. May according to the ring presence of guard, NU, NJ, NUP, N, NF, such as single row cylindrical roller bearings, double row cylindrical roller bearing and NNU, NN and other. The WZZG bearing inner ring and outer ring is separable structure. Application Automotive, tractor, machine tool, electric machine, water pump, cranes, elevator, agricultural machinery, textile machinery, rolling mill, mining, metallurgical, plastic machinery ect.

Tapered roller bearings are made up of four interdependent components: The inner ring, or cone; the tapered rollers, or rolling elements; the roller retainer, or cage(collectively known as the cone assembly); and an outer race, or cup. They are designed and manufactured to ensure that their conical rollers and raceways are arranged so that their contact surfaces converge at a common apex on the bearing’s axis. The larger this contact angle the greater the bearing’s loading capacity. The angular construction of single row tapered roller bearings provides a high capacity for radial, axial, and combined loads.Tapered roller bearings have window-type pressed steel cage with no marking. Others types could be specifically designed on request. FEATURES Dimensional Stability Long Life Even In Contaminated Lubricant Durable Steel Cage Typical Applications Tapered roller bearings are used for heavy-duty, moderate speed applications. Typical applications that will benefit from these durable bearings include: Agriculture, Construction and Mining Equipment Various Axle Systems Conveyance Vehicles Gear Box, Engine Motors, Reducers

Structure & introduction The outer ring of drawn cup needle roller bearing is punched with the high- quality steel sheet. The outer ring has thin wall. The drawn cup needle roller bearing has the characteristics of small radial section area, large load carrying capacity, less inertia and economic manufacture. It is suitable for small section height, or when the housing bore isn't used for raceway, this type is recommended to use. The bearing is assembled into the housing bore under a certain pressure without further axial location. The drawn cup needle roller bearing generally takes its shaft diameter as the internal raceway. However, the proper LR type inner ring can be used in accordance with application condition. The drawn cup needle roller bearing has two structures-with retainer and with full of needles. They are divided into opened type and close-end type. The structure with retainer has the single seal ring and double seal ring. The structure with full of needles has a large load carrying capacity.

Double row self-aligning ball bearings, the inner ring has two raceways, the outer ring has a spherical raceway, the center of curvature coincides with the axis of the bearing, and has self-aligning performance. Therefore, when the mechanical bearing is bent under load or the axis of the inner ring is inclined relative to the axis of the outer ring due to machining and installation errors, the normal operation of the mechanical device can still be guaranteed. Double row self-aligning ball bearings are mainly used to bear radial loads, but they can also bear smaller axial loads while mainly bearing radial loads, but cannot bear pure axial loads. Self-aligning double row ball bearings are designed for applications with severe misalignment in mounting or shaft deflection. The concave raceway of the outer ring combined with the two rows of balls allows operation over a wide range of contact angles. https://www.wzzgbearing.com/