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Rear Single Earring Four Rod Hydraulic Cylinder

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Rear Single Earring Four Rod Hydraulic Cylinder

The rear single earring four rod hydraulic cylinder is a versatile and powerful hydraulic element specifically designed for applications requiring precision and reliability with linear motion. With its unique design features of rear single lugs and four rods, this hydraulic cylinder offers superior performance and durability, making it ideal for a wide range of industrial and mobile equipment.

Essential Characteristics Of Four Rod Hydraulic Cylinder:

Rear Single Earring Design:

    • The hydraulic cylinder is combined with a single rear earring to provide a safe and reliable installation option.
    • The rear single earring design offers ease of installation and maintenance, minimizing downtime in industrial operations.

Four Rod Configuration:

    • The four rod hydraulic cylinder has four rods to distribute the load evenly and ensure smooth and balanced movement.
    • The four rod construction increases the strength of the cylinder and reduces the stress on individual components, resulting in improved life and performance.

Precision and Control:

    • The rear single earring four rod hydraulic cylinder offers precise and accurate linear motion control.
    • It delivers smooth and controlled movement, allowing for precise positioning and efficient operation in various applications.

High-Strength Construction:

    • The four rod hydraulic cylinder is made of high quality material and durable.
    • It is designed to withstand heavy loads, high pressures and challenging operating conditions, making it suitable for harsh industrial environments.

Rear Single Earring Four Rod Hydraulic Cylinder Parameter:

Rear Single Earring Four Rod Hydraulic Cylinder Usage Method:

Mounting and Installation:

    • Determine the appropriate location to install hydraulic cylinders in the system or equipment.
    • Ensure the installation surface is clean and free of debris or contaminants.
    • Place the rear single earring flush with the mounting face and secure it with recommended bolts or fasteners.

Hydraulic Connections:

    • Connect the hydraulic supply line to the cylinder port, ensuring proper seal to prevent leakage.
    • Follow the manufacturer’s recommendations for the type of hydraulic oil and fill the system accordingly.


    • Activate the hydraulic system and use the hydraulic control valve to control the cylinder movement.
    • Adjust flow and pressure Settings to achieve the desired speed and force output.
    • Monitor cylinder operation for any anomalies or signs of failure.

Rear Single Earring Four Rod Hydraulic Cylinder Maintenance:

Regular Inspection:

    • Perform a routine visual inspection to check for any signs of wear, leakage, or damage.
    • Check seals, tie rods, and cylinder blocks for abnormalities and replace worn or damaged parts promptly.


    • Follow the manufacturer’s lubrication interval guidelines and use the recommended lubricant to ensure smooth operation.
    • Lubricate rods, seals, and other moving parts to prevent friction and extend cylinder life.

Sealing System Maintenance:

    • Make sure the sealing system is in good condition to prevent leaks and maintain optimum performance.
    • Check seals regularly for wear or damage and replace them if necessary.
    • Clean sealing surfaces and ensure they are properly aligned when reassembled.

How To Repair A Hydraulic Cylinder?

Repairing a hydraulic cylinder requires careful attention to detail and knowledge of hydraulic systems. Here is a general guide on how to repair a hydraulic cylinder:

  1. Safety First:
    • Before starting any repairs, ensure the hydraulic system is depressurized and all power sources are disconnected.
    • Use appropriate safety equipment such as gloves and eye protection throughout the repair process.
  2. Identify the Problem:
    • Inspect the hydraulic cylinder to determine the cause of the malfunction or damage.
    • Common issues include leaks, damaged seals, bent rods, or worn-out components.
    • Take note of any visible signs of wear, leaks, or abnormal movement.
  3. Disassembly:
    • Begin by removing the hydraulic cylinder from the equipment or system.
    • Carefully disassemble the cylinder, following the manufacturer’s instructions.
    • Take pictures or make notes during disassembly to aid in reassembly.
  4. Inspection and Cleaning:
    • Thoroughly inspect all components for wear, damage, or signs of contamination.
    • Clean all parts using an appropriate cleaning agent to remove dirt, debris, and hydraulic fluid residue.
    • Inspect the rods, pistons, seals, and cylinder barrels for any defects or signs of excessive wear.
  5. Replacement of Seals and O-Rings:
    • Damaged or worn seals and O-rings commonly cause hydraulic cylinder issues.
    • Replace all seals and O-rings with new ones that match the specifications provided by the manufacturer.
    • Ensure proper alignment and lubricate the seals with hydraulic fluid before installation.
  6. Rod Straightening or Replacement:
    • If the rod is bent or damaged, it may need straightening or replacement.
    • Straighten a bent rod using a hydraulic press or seek professional assistance.
    • If the rod is severely damaged, it may need to be replaced entirely.
  7. Component Replacement:
    • Inspect other components, such as bearings, bushings, and pistons, for wear or damage.
    • Replace worn or damaged components with new ones that meet the manufacturer’s specifications.
  8. Reassembly:
    • Assemble the hydraulic cylinder, following the reverse order of disassembly.
    • During reassembly, apply a thin film of hydraulic oil or grease to the seals and components.
    • Ensure that all connections are tight and properly aligned.
  9. Testing and Inspection:
    • Once reassembled, test the hydraulic cylinder for proper operation.
    • Reconnect the hydraulic system and thoroughly inspect any leaks, abnormal sounds, or irregular movement.
    • Cycle the cylinder several times to ensure smooth and consistent operation.
  10. System Flushing and Fluid Replacement:
  • If contamination was found during the repair process, flush the hydraulic system to remove any debris or contaminants.
  • Replace the hydraulic fluid with a fresh supply, following the manufacturer’s fluid type and quantity recommendations.

Capability & Capacity Of Factory:

(1) Assembly

We have a first-class independent research and development assembly platform. The hydraulic cylinder production workshop has four semi-automatic lifting cylinder assembly lines and one automatic tilt cylinder assembly line, with a designed annual production capacity of 1 million pieces. The special cylinder workshop is equipped with various specifications of a semi-automatic cleaning assembly system with a designed annual production capacity of 200,000 and equipped with famous CNC machining equipment, a machining center, a high-precision cylinder processing special equipment, a robot welding machine, an automatic cleaning machine, automatic cylinder assembly machine, and automatic painting production line. Existing critical equipment of more than 300 sets (sets). The optimal allocation and efficient use of equipment resources ensure the accuracy requirements of products and meet the high-quality needs of products.

(2) Machining

The machining shop is equipped with a customized inclined rail turning center, machining center, high-speed honing machine, welding robot, and other related equipment, which can handle the processing of cylinder tubes with a maximum inner diameter of 400mm and a maximum length of 6 meters.

(3) Welding

(4) Painting & coating

With small and medium-sized cylinder automatic water-based paint coating lines, to achieve automatic robot loading and unloading and automatic spraying, the design capacity of 4000 pieces per shift;
We also have a semi-automatic paint production line for large cylinders powered by a power chain, with 60 cases per shift design capacity.

(5) Testing

We have first-class inspection facilities and test beds to ensure that the performance of the cylinder meets the requirements.



We are one of the best light four rod hydraulic cylinder manufacturers. We can offer comprehensive light four rod hydraulic cylinder stock. We also provide corresponding agricultural gearboxes. We have exported our products to clients around the world and earned a good reputation because of our superior product quality and after-sales service. We warmly welcome customers both at home and abroad to contact us to negotiate business, exchange information, and cooperate with us!

Take a Tour of Our VR Factory:

Take a tour of our VR factory with the following

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