Heavy Duty Hydraulic RAM Cylinder 200-500 Ton for Ship Offshore Lifting Press

We strongly recommend choosing a jack with a rated capacity of at least 1.2 to 1.5 times the actual lifting load to ensure an essential safety margin. The stroke depends on your project's maximum required lifting height. For complex bridge or architectural lifting, please share your technical blueprints, and our engineers will calculate and recommend the precise configuration (such as single-acting vs. double-acting, or ultra-thin cylinders).

Single-acting cylinders use hydraulic pressure to lift and rely on built-in springs, gravity, or load weight to retract. They are ideal for straightforward vertical lifting. Double-acting cylinders utilize hydraulic pressure for both lifting and retraction, providing much faster and highly controlled return speeds. They can also exert pulling force, making them the preferred choice for long-stroke, high-frequency, or complex lateral pushing/pulling operations.

A lock nut jack features a threaded piston rod. Once the load is lifted to the desired height, the mechanical lock nut can be manually screwed down to lock against the cylinder body. This provides secure, 100% mechanical load holding. You can disconnect all hydraulic hoses and shut down the pump station. The load will remain safely supported indefinitely without relying on hydraulic pressure, eliminating any risk of catastrophic failure from hose damage or valve leakage.

Yes, absolutely! We specialize in providing turnkey multi-point synchronous lifting solutions. Depending on your needs, we can design systems matching 4, 8, 12, 16, or more cylinders. These are paired with our PLC intelligent control synchronous hydraulic pump stations, which can control synchronization displacement precision within to ensure maximum safety during mega-infrastructure lifting projects.