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TB Type Four Rod Hydraulic Cylinder

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TB Type Four Rod Hydraulic Cylinder

TB four rod hydraulic cylinder is a universal, robust hydraulic cylinder with a wide range of industrial applications. This four rod hydraulic cylinder is integral to various hydraulic systems that provide superior strength, precise control, and reliable performance. This paper will discuss the main characteristics, use methods, and maintenance skills of a TB-type four rod hydraulic cylinder.

Essential Characteristics Of Four Rod Hydraulic Cylinder:

The TB type four rod hydraulic cylinder offers several notable features that make it a preferred choice in demanding hydraulic applications:

Enhanced Stability and Load-Bearing Capacity:

  • The four rod design ensures excellent stability and evenly distributed load-bearing capacity throughout the cylinder, minimising deflection and improving overall performance.
  • This feature makes the Tb four rod hydraulic cylinder suitable for heavy-duty applications involving high forces, large loads, or challenging operating conditions.

Precise Control and Positioning:

  • The four rod configuration provides enhanced control and precise positioning of the piston rod, allowing for accurate movement and load alignment.
  • This precise control makes the four rod hydraulic cylinder ideal for applications that require detailed and synchronized movement, such as robotics, material handling, and industrial automation.

Durability and Longevity:

  • The TB four rod hydraulic cylinder is built with high-quality materials to ensure durability, long life, wear, and corrosion resistance.
  • This robust construction enables the cylinder to withstand heavy use and harsh operating environments, ensuring reliable performance over long periods.


TB Type Four Rod Hydraulic Cylinder Parameter:

TB Type Four Rod Hydraulic Cylinder Usage Method:


  • Use appropriate bolts or fasteners to ensure the cylinders are correctly aligned and secured to the equipment or machine.
  • Follow the manufacturer’s instructions and guidelines for specific mounting configurations of TB-type cylinders.

Hydraulic Connections:

  • Connect the hydraulic line to the inlet and outlet ports of the cylinder to ensure a safe connection and no leakage.
  • Use appropriate fittings, seals, and thread types as the manufacturer recommends.


  • Hydraulic pressure is applied to the cylinder to extend or retract the rod as required by the application.
  • Use a hydraulic control valve or other appropriate control mechanism to control the movement of the cylinder.

TB Type Four Rod Hydraulic Cylinder Maintenance:

Regular Inspection:

  • Check the cylinder regularly for leaks, damage, or excessive wear.
  • Check the condition of seals, tie rods, and mounting components, and replace worn or damaged parts.


  • Use a high quality hydraulic oil or grease suitable for the cylinder specifications as recommended by the manufacturer for lubrication intervals.
  • Lubricate tie rods, seals, and other moving parts to minimize friction and ensure smooth operation.


  • Keep the cylinder and its surrounding area clean and free from debris, dust, or contaminants affecting its performance.
  • Wipe the outside surface of the cylinder with a mild cleaner and a soft cloth.

How To Bleed A Hydraulic Cylinder?

Bleeding a hydraulic cylinder is a necessary maintenance procedure that involves removing air bubbles or trapped air from the hydraulic system. Air in the system can cause reduced performance, spongy operation, or even complete cylinder failure. Here’s a step-by-step guide on how to bleed a hydraulic cylinder:

  1. Prepare the Necessary Tools:
  • Safety glasses and gloves
  • Wrench or socket set
  • Clean cloth or rag
  • Proper hydraulic fluid (if required)
  1. Identify the Bleed Valve:
  • Locate the bleed valve on the hydraulic cylinder. The bleed valve is usually a tiny screw or fitting on or near the cylinder body. Consult the manufacturer’s documentation or hydraulic system schematics to find the specific valve.
  1. Position the Cylinder:
  • Ensure that the hydraulic cylinder is in a safe and stable position. It should be stationary and, if necessary, adequately supported or secured to prevent movement during bleeding.
  1. Open the Bleed Valve:
  • Carefully loosen the bleed valve on the cylinder using a wrench or socket set. Loosen it just enough to allow air to escape without completely removing the valve.
  1. Prepare for Fluid Discharge:
  • Place a clean cloth or rag underneath the bleed valve to catch any hydraulic fluid that may be discharged during the bleeding process. This helps to keep the work area clean and prevents spillage.
  1. Activate the Hydraulic System:
  • Activate the hydraulic system that powers the cylinder. This can be done by operating the associated hydraulic pump, control valve, or any other mechanism that controls the flow of hydraulic fluid to the cylinder.
  1. Monitor the Bleed Valve:
  • As the hydraulic system is activated, you should see air bubbles escaping from the bleed valve. Allow the hydraulic fluid to flow through the cylinder and bleed valve for sufficient time to ensure that all air is expelled from the system.
  • Keep an eye on the fluid level in the hydraulic reservoir and replenish it if necessary to maintain the proper fluid level throughout the bleeding process.
  1. Close the Bleed Valve:
  • Once you notice a steady flow of hydraulic fluid without any air bubbles, carefully tighten the bleed valve using a wrench or socket set. Ensure the valve is securely closed, but avoid overtightening to prevent damage.
  1. Check for Proper Operation:
  • With the bleed valve closed, operate the hydraulic system and the cylinder to confirm it is functioning correctly. Pay attention to any unusual noises, vibrations, or other signs of malfunction. If any issues persist, consult a hydraulic system specialist for further assistance.

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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