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Middle Fixed Trunnion Four Rod Hydraulic Cylinder

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Middle Fixed Trunnion Four Rod Hydraulic Cylinder

The middle fixed trunnion four rod hydraulic cylinder is a state-of-the-art hydraulic component designed to deliver exceptional power, stability, and precision in a wide range of industrial applications. With its innovative middle fixed trunnion design and four rod configuration, this four rod hydraulic cylinder offers superior load-bearing capacity, durability, and reliable performance, making it an essential asset in demanding hydraulic systems.

Essential Characteristics Of Four Rod Hydraulic Cylinder:

Middle Fixed Trunnion Design:

    • The intermediate fixed trunnion design provides a safe and stable installation solution that ensures reliable operation even under heavy loads and extreme conditions.
    • It simplifies the installation process and can be easily integrated into various hydraulic systems or equipment.

Four Rod Configuration:

    • The four rod configuration enhances the bearing capacity of the cylinder, providing optimal stability and precise positioning.
    • It enables the cylinder to effectively withstand side loads, providing exceptional resistance to torsion and lateral forces.

High Power Output:

    • This four rod hydraulic cylinder has an impressive power output, allowing it to handle heavy loads easily.
    • It provides superior power and thrust, making it suitable for applications requiring strength and lifting capacity.

Precise Control:

    • The four rod hydraulic cylinder with a fixed trunnion in the middle can accurately control the linear movement to ensure accurate positioning and smooth operation.
    • It provides excellent stroke control, enabling operators to achieve the speed and precision required for specific tasks.

Middle Fixed Trunnion Four Rod Hydraulic Cylinder Parameter:

Middle Fixed Trunnion Four Rod Hydraulic Cylinder Usage Method:

Mounting and Installation:

    • Consider load requirements and space constraints to determine the appropriate installation location of the four rod hydraulic cylinder within the system or equipment.
    • Ensure the mounting surface is clean, level, and able to support the weight of the cylinder.
    • Secure the middle fixing trunnons to the mounting surface using 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 to the recommended level.


    • Activate the hydraulic system and control the movement of the cylinder using a hydraulic control valve or other suitable control mechanism.
    • Adjust flow and pressure Settings to achieve the desired speed and force output.
    • Regularly monitor cylinder operation for abnormal behavior, such as leakage, overheating, or unusual noise.

Middle Fixed Trunnion Four Rod Hydraulic Cylinder Maintenance:

Regular Inspection:

    • Perform routine visual inspections to check for signs of wear, leakage, or damage.
    • Inspect rod surfaces, seals, and mounting connections for abnormalities and address any problems 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 reduce friction and extend the service life of four-bar hydraulic cylinders.

Seal Replacement:

    • Over time, seals may wear out and need to be replaced. If a leak is detected, carefully remove the old seal and install the new seal according to the manufacturer’s specifications.

How Fast Can A Hydraulic Cylinder Move?

The speed at which a hydraulic cylinder can move depends on several factors, including the size and design of the cylinder, the hydraulic system’s pressure and flow rate, and the load being moved.

In general, hydraulic cylinders are known for their ability to provide both high force and precise control, but their maximum speed is typically lower compared to other types of actuators. The speed of a hydraulic cylinder is determined by the rate at which hydraulic fluid is supplied to or released from the cylinder chamber.

Here are a few factors that can affect the speed of a hydraulic cylinder:

  1. System Design and Components: The design of the hydraulic system, including the pump, valves, and piping, can impact the speed of the cylinder. The system should be properly sized and configured to provide adequate flow rate and pressure to achieve the desired speed.
  2. Cylinder Diameter and Stroke Length: The diameter and stroke length of the cylinder also play a role in determining its speed. Generally, larger diameter cylinders tend to move more slowly than smaller ones due to the more extensive hydraulic fluid required to fill or empty the cylinder chamber.
  3. Flow Rate and Pressure: The flow rate and pressure of the hydraulic fluid supplied to the cylinder are critical factors in determining the cylinder’s speed. Increasing the flow rate or pressure can result in faster movement, while reducing them will slow down the cylinder.
  4. Load and Friction: The weight and friction of the shipment being moved can affect the speed of the cylinder. Heavier loads may require more force, which can reduce the overall rate of the cylinder. Additionally, increased friction within the system, such as from seals or misalignment, can also impact the speed.

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!

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Take a tour of our VR factory with the following

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