Product Description
Product Description
High Quality Customized DGR-MOB Series Hydraulic Cylinder for Engineering Machinery
Hydraulic Equipment includes Engineering Hydraulic Cylinder, Hydraulic Cylinder For Metallurgical Equipment, Hydraulic Cylinder For Industry and Thin Hydraulic Cylinder, etc.
1. Cylinder Barrel
The commonly used materials of DGR-MOB Series hydraulic cylinder are seamless steel pipes of 20#, 35#, and 45#, which have been honed or rolled to meet the European roughness requirements of less than 0.4um. Low pressure oil cylinders can use 20# steel pipes, while high pressure oil cylinders can use 45# steel pipes.
2. Piston Rod
There are 2 types of piston rods: CHINAMFG rod and hollow rod. One end of the hollow piston rod should have a vent hole for welding and heat treatment. The material of the plug rod is 35# and 45# steel, and the material of the hollow piston rod is 35# and 45# seamless steel pipe.
After rough machining, the piston rod is quenched and tempered to a hardness of 229-285HB. If necessary, it is then subjected to high-frequency quenching to achieve a hardness of 45-55HRC.
3. Cylinder Head
Castings for low pressure, HT300 gray iron for medium and low pressure, and 35# and 45# steel for medium and high pressure.
When the cylinder head itself is the guide sleeve of the piston rod, it is best to choose cast iron for the cylinder head. At the same time, brass, bronze. Or other wear-resistant materials should be melted CHINAMFG the guide surface. If a structure with a guide sleeve pressed into the cylinder head is used, the guide sleeve should be wear-resistant cast iron, bronze, or brass.
4. Piston
Commonly used materials are wear-resistant cast iron, gray cast iron (HT300, HT350), steel, and aluminum alloy. The coaxiality tolerance value of the piston and piston rod in the structural diagram should be 0.03mm.
Detailed Photos
Product Parameters
Technical Specifications
| Product Description | Unit | Power |
| Cylinders diameter (piston diameter) | mm | 40~160 |
| Rod diameter (piston rod diameter) | mm | 20~120 |
| Stroke | mm | 50~2500 |
| Pressure | MPa | 16~25 |
| Operating temperature | ºC | -40~120 |
| Piston rod coating NSS neutral salt spray test time | H | ≥96 |
Models for your choosing:
1, DGR-MOB Standard Oil Cylinder
2, DGR-MOB-CA Tail Single Ear Type Oil Cylinder
3, DGR-MOB-CB Tail Double Ear Type Oil Cylinder
4, DGR-MOB-CA-Y Single Ear+YJoint Type Oil Cylinder
5, DGR-MOB-CA Tail Single Ear Type Oil Cylinder
6, DGR-MOB-LB Front and Rear Foot Seat Type Oil Cylinders
7, DGR-MOB-FA Front Flange Type Oil Cylinder
8,DGR-MOB-FB Rear Flange Type Oil Cylinder
9, DGR-MOB-TC Middle Trunnion Type Oil Cylinder
10, DGR-MOB-L Type Double Piston Rod Adjustable Piston Cylinder
Please contact me to get parameters for other models
Features
High Strength
1. Joint development of new high-strength steel pipes with CHINAMFG domestic special steel enterprises
2. Increase Work pressure
High Performance
1. On average, about 20 seconds faster than similar products
2. Reduced working time by 19%
Light Weight
1. The lightest weight to win the biggest lift
2. Steel pipe and hydraulic combined weight loss is about 17%
3. Working oil volume reduced by 16%
Excellent Design
1. Optimized design, cylinder bore is reduced, working pressure is increased
2. Using imported brand seals
3. Respond to 2 kinds of severe conditions of high temperature and low temperature
4. Can adapt to -40 °C, -110 °C working temperature
5. Apply 5 utility model patents
Manufacturing Capabilities
Welded Designs with 1″ to 20″ Bores
Tie Rod Designs with 2″ to 5″ Bores
Telescopic Designs, Single & Double Acting
Large Bore Hydraulic Cylinders
Stroke Lengths up to 50 Feet
Designed for Pressures up to 7,500 PSI
Custom Cylinder Features
Integrated Linear Position Sensors
Built-in Valves and Manifolds
Double Ended cylinder designs
Piggyback cylinder designs
Integrated Cushioning and Rephasing
Safety Designs with Velocity Fuses
Spherical and High-Wear Bushings
Custom Mounts and End Fittings
High-Strength / Weight-saving Materials
Color-matched Paint and Labeling
Packaging & Shipping
Company Profile
HangZhou Packway Technology Development Co., LTD, founded in March 2005, has been at the forefront of innovation, constantly striving to develop cutting-edge technologies and solutions. With our headquarters located in HangZhou,we currently operate 3 subsidiary companies, each connected with different sectors of the machinery market.
Certifications
Our factory has passed the certificate: ISO9001 / ISO14001 / CE / Rohs
FAQ
Q1. What are your terms of packing?
A: Generally, we pack our goods in neutral white boxes and brown wooden cartons. If you have a legally registered patent, we can pack the goods in your branded boxes after getting your authorization letters.
Q2. What are your terms of payment?
A: T/T 50% as deposit, and 50% before shipping. We’ll show you the photos of the products and packages before you pay the balance.
Q3. What are your terms of delivery?
A: EXW, FOB, CFR, CIF.
Q4. How about your delivery time?
A: Generally, it will take 10-25 days to produce the products. The specific delivery time depends on the items and the quantity of your order.
Q5: How is the warranty system?
A: 1~5 years. (upon the deal)
Q6. Do you test all your goods before delivery?
A: Yes, we have a 100% test before delivery.
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| Certification: | CE, ISO9001 |
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| Pressure: | Medium Pressure |
| Work Temperature: | Normal Temperature |
| Acting Way: | Single Acting |
| Working Method: | Straight Trip |
| Adjusted Form: | Regulated Type |
| Customization: |
Available
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How do hydraulic cylinders handle the challenges of precise positioning and control?
Hydraulic cylinders are designed to handle the challenges of precise positioning and control with a combination of engineering principles and advanced control systems. These challenges often arise in applications where accurate and controlled movements are required, such as in industrial automation, construction, and material handling. Here’s a detailed explanation of how hydraulic cylinders overcome these challenges:
1. Fluid Power Control:
– Hydraulic cylinders utilize fluid power control to achieve precise positioning and control. The hydraulic system consists of a hydraulic pump, control valves, and hydraulic fluid. By regulating the flow of hydraulic fluid into and out of the cylinder, operators can control the speed, direction, and force exerted by the cylinder. The fluid power control allows for smooth and accurate movements, enabling precise positioning of the hydraulic cylinder and the attached load.
2. Control Valves:
– Control valves play a crucial role in handling the challenges of precise positioning and control. These valves are responsible for directing the flow of hydraulic fluid within the system. They can be manually operated or electronically controlled. Control valves allow operators to adjust the flow rate of the hydraulic fluid, controlling the speed of the cylinder’s movement. By modulating the flow, operators can achieve fine control over the positioning of the hydraulic cylinder, enabling precise and accurate movements.
3. Proportional Control:
– Hydraulic cylinders can be equipped with proportional control systems, which offer enhanced precision in positioning and control. Proportional control systems utilize electronic feedback and control algorithms to precisely regulate the flow and pressure of the hydraulic fluid. These systems provide accurate and proportional control over the movement of the hydraulic cylinder, allowing for precise positioning at various points along its stroke length. Proportional control enhances the cylinder’s ability to handle complex tasks that require precise movements and control.
4. Position Feedback Sensors:
– To achieve precise positioning, hydraulic cylinders often incorporate position feedback sensors. These sensors provide real-time information about the position of the cylinder’s piston rod. Common types of position feedback sensors include potentiometers, linear variable differential transformers (LVDTs), and magnetostrictive sensors. By continuously monitoring the position, the feedback sensors enable closed-loop control, allowing for accurate positioning and control of the hydraulic cylinder. The feedback information is used to adjust the flow of hydraulic fluid to achieve the desired position accurately.
5. Servo Control Systems:
– Advanced hydraulic systems employ servo control systems to handle the challenges of precise positioning and control. Servo control systems combine electronic control, position feedback sensors, and proportional control valves to achieve high levels of accuracy and responsiveness. The servo control system continuously compares the desired position with the actual position of the hydraulic cylinder and adjusts the flow of hydraulic fluid to minimize any positional error. This closed-loop control mechanism enables the hydraulic cylinder to maintain precise positioning and control, even under varying loads or external disturbances.
6. Integrated Automation:
– Hydraulic cylinders can be integrated into automated systems to achieve precise positioning and control. In such setups, the hydraulic cylinders are controlled by programmable logic controllers (PLCs) or other automation controllers. These controllers receive input signals from various sensors and use pre-programmed logic to command the hydraulic cylinder’s movements. The integration of hydraulic cylinders into automated systems allows for precise and repeatable positioning and control, enabling complex sequences of movements to be executed with high accuracy.
7. Advanced Control Algorithms:
– Advancements in control algorithms have also contributed to the precise positioning and control of hydraulic cylinders. These algorithms, such as PID (Proportional-Integral-Derivative) control, adaptive control, and model-based control, enable sophisticated control strategies to be implemented. These algorithms consider factors such as load variations, system dynamics, and environmental conditions to optimize the control of hydraulic cylinders. By employing advanced control algorithms, hydraulic cylinders can compensate for disturbances and achieve precise positioning and control over a wide range of operating conditions.
In summary, hydraulic cylinders overcome the challenges of precise positioning and control through the use of fluid power control, control valves, proportional control, position feedback sensors, servo control systems, integrated automation, and advanced control algorithms. By combining these elements, hydraulic cylinders can achieve accurate and controlled movements, enabling precise positioning and control in various applications. These capabilities are essential for industries that require high precision and repeatability in their operations, such as industrial automation, robotics, and material handling.
Integration of Hydraulic Cylinders with Equipment Requiring Rapid and Dynamic Movements
Hydraulic cylinders can indeed be integrated with equipment that requires rapid and dynamic movements. While hydraulic systems are generally known for their ability to provide high force and precise control, they can also be designed and optimized for applications that demand fast and dynamic motion. Let’s explore how hydraulic cylinders can be integrated with such equipment:
- High-Speed Hydraulic Systems: Hydraulic cylinders can be part of high-speed hydraulic systems designed specifically for rapid and dynamic movements. These systems incorporate features such as high-flow valves, optimized hydraulic circuitry, and responsive control systems. By carefully engineering the system components and hydraulic parameters, it is possible to achieve the desired speed and responsiveness, enabling the equipment to perform rapid movements.
- Valve Control: The control of hydraulic cylinders plays a crucial role in achieving rapid and dynamic movements. Proportional or servo valves can be used to precisely control the flow of hydraulic fluid into and out of the cylinder. These valves offer fast response times and precise flow control, allowing for rapid acceleration and deceleration of the cylinder’s piston. By adjusting the valve settings and optimizing the control algorithms, equipment can be designed to execute dynamic movements with high speed and accuracy.
- Optimized Cylinder Design: The design of hydraulic cylinders can be optimized to facilitate rapid and dynamic movements. Lightweight materials, such as aluminum alloys or composite materials, can be used to reduce the moving mass of the cylinder, enabling faster acceleration and deceleration. Additionally, the cylinder’s internal components, such as the piston and seals, can be designed for low friction to minimize energy losses and enhance responsiveness. These design optimizations contribute to the overall speed and dynamic performance of the equipment.
- Accumulator Integration: Hydraulic accumulators can be integrated into the system to enhance the dynamic capabilities of hydraulic cylinders. Accumulators store pressurized hydraulic fluid, which can be rapidly released to supplement the flow from the pump during high-demand situations. This stored energy can provide an extra boost of power, allowing for faster and more dynamic movements. By strategically sizing and configuring the accumulator, the system can be optimized for the specific rapid and dynamic requirements of the equipment.
- System Feedback and Control: To achieve precise and dynamic movements, hydraulic systems can incorporate feedback sensors and advanced control algorithms. Position sensors, such as linear potentiometers or magnetostrictive sensors, provide real-time position feedback of the hydraulic cylinder. This information can be used in closed-loop control systems to maintain precise positioning and execute rapid movements. Advanced control algorithms can optimize the control signals sent to the valves, ensuring smooth and dynamic motion while minimizing overshooting or oscillations.
In summary, hydraulic cylinders can be integrated with equipment that requires rapid and dynamic movements by utilizing high-speed hydraulic systems, employing responsive valve control, optimizing cylinder design, integrating accumulators, and incorporating feedback sensors and advanced control algorithms. These measures enable hydraulic systems to deliver the speed, responsiveness, and precision necessary for equipment operating in dynamic environments. By leveraging the capabilities of hydraulic cylinders, manufacturers can design and integrate systems that meet the requirements of applications demanding rapid and dynamic movements.
What are the common signs of wear or leakage that indicate hydraulic cylinder issues?
Hydraulic cylinders are critical components in hydraulic systems, and wear or leakage can lead to performance issues and potential system failures. It is important to be aware of the common signs that indicate hydraulic cylinder problems. Here’s a detailed explanation of the common signs of wear or leakage that indicate hydraulic cylinder issues:
1. Fluid Leakage:
– Fluid leakage is one of the most obvious signs of hydraulic cylinder problems. If you notice hydraulic fluid leaking from the cylinder, it indicates a seal failure or damage to the cylinder. Leaking fluid may be visible around the rod, piston, or cylinder body. It is important to address fluid leakage promptly as it can lead to a loss of system efficiency, contamination of the surrounding environment, and potential damage to other system components.
2. Reduced Performance:
– Wear or internal damage to the hydraulic cylinder can result in reduced performance. You may notice a decrease in the cylinder’s force output, slower operation, or difficulty in extending or retracting the cylinder. Reduced performance can be indicative of worn seals, damaged piston or rod, internal leakage, or contamination within the cylinder. Any noticeable decrease in the cylinder’s performance should be inspected and addressed to prevent further damage or system inefficiencies.
3. Abnormal Noise or Vibrations:
– Unusual noise or vibrations during the operation of a hydraulic cylinder can indicate internal wear or damage. Excessive noise, knocking sounds, or vibrations that are not typical for the system may suggest problems such as worn bearings, misalignment, or loose internal components. These signs should be investigated to identify the source of the issue and take appropriate corrective measures.
4. Excessive Heat:
– Overheating of the hydraulic cylinder is another sign of potential issues. If the cylinder feels excessively hot to the touch during normal operation, it may indicate problems such as internal leakage, fluid contamination, or inadequate lubrication. Excessive heat can lead to accelerated wear, reduced efficiency, and overall system malfunctions. Monitoring the temperature of the hydraulic cylinder is important to detect and address potential problems.
5. External Damage:
– Physical damage to the hydraulic cylinder, such as dents, scratches, or bent rods, can contribute to wear and leakage issues. External damage can compromise the integrity of the cylinder, leading to fluid leakage, misalignment, or inefficient operation. Regular inspection of the cylinder’s external condition is essential to identify any visible signs of damage and take appropriate actions.
6. Seal Failure:
– Hydraulic cylinder seals are critical components that prevent fluid leakage and maintain system integrity. Signs of seal failure include fluid leakage, reduced performance, and increased friction during cylinder operation. Damaged or worn seals should be replaced promptly to prevent further deterioration of the cylinder’s performance and potential damage to other system components.
7. Contamination:
– Contamination within the hydraulic cylinder can cause wear, damage to seals, and overall system inefficiencies. Signs of contamination include the presence of foreign particles, debris, or sludge in the hydraulic fluid or visible damage to seals and other internal components. Regular fluid analysis and maintenance practices should be implemented to prevent contamination and address any signs of contamination promptly.
8. Irregular Seal Wear:
– Hydraulic cylinder seals can wear over time due to friction, pressure, and operating conditions. Irregular seal wear patterns, such as uneven wear or excessive wear in specific areas, may indicate misalignment or improper installation. Monitoring the condition of the seals during regular maintenance can help identify potential issues and prevent premature seal failure.
It is important to address these common signs of wear or leakage promptly to prevent further damage, ensure the optimal performance of hydraulic cylinders, and maintain the overall efficiency and reliability of the hydraulic system. Regular inspection, maintenance, and timely repairs or replacements of damaged components are key to mitigating hydraulic cylinder issues and maximizing system longevity.
editor by CX 2024-03-21