CDH series hydraulic cylinders: a reliable source of power for heavy industrial applications

In the fields of modern heavy equipment manufacturing, metallurgy, energy, shipbuilding, and large-scale engineering machinery, hydraulic systems serve as the core power unit, and the performance of their executing components directly determines the reliability and efficiency of the entire machine. Among them, the CDH series heavy-duty hydraulic cylinders have become the preferred solution for heavy-duty linear drive applications due to their high load-bearing capacity, excellent rigidity, and long-term operational stability.

The CDH series (Cylinder, Double acting, Heavy duty) is a type of welded double acting heavy-duty hydraulic cylinder designed for high pressure, high thrust, strong impact, and harsh working conditions. Unlike common rod type oil cylinders such as the CDT series, the CDH series adopts an integral welded structure, with the cylinder barrel and front and rear end caps connected by high-strength welds, significantly improving the overall rigidity and anti eccentric load capacity.

This series usually complies with ISO 6020/1 international standards or domestic heavy-duty hydraulic cylinder industry specifications, and is widely used in industrial scenarios with extremely high requirements for safety and durability.

1. High strength welded structure
   Cancel traditional pull rods and adopt fully welded cylinder bodies, effectively avoiding the risk of vibration loosening, suitable for high impact and high vibration environments (such as forging, packaging, mining machinery).
2. High work pressure
   The rated working pressure generally reaches 21-35 MPa, and some customized models can reach 40 MPa. Under the same cylinder diameter, it can output greater thrust, improving equipment compactness and efficiency.
3. Large cylinder diameter and long stroke
   The cylinder diameter covers from Φ 80 mm to over Φ 800 mm, with a stroke of up to 3000 mm or even longer, meeting the diverse needs of large presses, lifting platforms, and pushing mechanisms.
4. Multiple sealing protection
   Equipped with a high-performance combination sealing system (such as seal+gasket+dust ring), it effectively resists dust, moisture, high temperature, and hydraulic oil pollution, greatly extending maintenance cycles.
5. Precision surface treatment
   Piston rod: medium frequency quenching+hard chrome plating+mirror polishing (roughness Ra ≤ 0.05 μ m)
   Cylinder inner wall: deep hole boring+honing to ensure precise fit and low friction operation
6. Diversified installation forms
   Supports multiple installation codes (such as MP1, MP3, MP5, MF1, etc.), among which the MP5 type (with rectangular flange base) is the most common, making it easy to rigidly connect with heavy-duty racks and ensuring smooth operation.

1. High reliability: The welded structure has no risk of loosening and is suitable for continuous operation for 7 × 24 hours
2. Long lifespan: high-quality materials+advanced sealing+surface treatment, significantly reducing failure rate
3. Low maintenance cost: Although it cannot be disassembled on site (compared to rod cylinders), the failure rate is extremely low, and the overall life cycle cost is better
4. Flexible customization: We can provide integrated solutions such as special sealing, coating, buffering, displacement sensing, etc. according to customer working conditions

Against the backdrop of the continuous upgrading of "great power heavy equipment", the requirements for core hydraulic components in heavy equipment are becoming increasingly stringent. The CDH series hydraulic cylinders, with their sturdy, efficient, and reliable characteristics, continue to provide solid power support for key industries such as steel, energy, transportation, and manufacturing. Whether it's the precise pressing of a thousand ton press or the powerful pushing in deep mines, the CDH series has always been a trusted "arm of power" for engineers.

Interested in learning more about industry trends and solutions? Contact Melody: sale@guoyuehydraulic.com/WhatsApp +8615852701381