Hydraulic Cylinders

Hydraulic Cylinders – The driving force behind every tail gate and lift gate

A smooth loading process is the foundation of modern logistics. The hydraulic cylinder is the central driving element of every tail gate. It precisely converts hydraulic pressure into linear motion and ensures the safe, efficient, and controlled lifting and lowering of heavy loads. Without it, the entire lift gate system would be inoperative. SULEJ Ladebordwand relies on tested hydraulic components that guarantee maximum reliability, stability, and durability even under extreme conditions – for safe and efficient operation in daily transport routines.

Hydraulic cylinders in detail: design and functionality

At first glance, a hydraulic cylinder appears simple, but inside it contains a complex system of precisely matched components. It consists of a cylinder tube, a piston with sealing system, and a piston rod that transmits the generated motion to the outside. When hydraulic oil is pressurized into one of the chambers, it creates a powerful force that moves the piston and transfers it to the lifting mechanism of the tail gate. The result is smooth, controlled platform movement – precise to the millimeter. This combination of pressure, precision, and sealing forms the foundation of performance for every lifting system.

Types and materials: the right hydraulic cylinder for every tail gate

Pressure balance cylinders: Synchronize lifting arms, compensate for tolerances, and prevent system distortion – essential for smooth, parallel platform movements.

Folding cylinders: Control the folding and unfolding of articulated platforms. Designed for compact installation with a large effective stroke.

Lifting cylinders: Generate the actual lifting and lowering motion of the platform. Load capacity, speed, and control accuracy are determined here.

Tilt cylinders: Open and close the platform and, depending on the system, handle the locking or tilting function.

Stabilizer cylinders: Stabilize the platform in loading or parked position, absorb lateral forces, and increase structural rigidity.

Sliding cylinders: Move assemblies longitudinally or laterally (e.g., for docking/positioning), ensuring precise approach alignment.

For the high forces in everyday transport, piston rods made of hardened, hard-chromed steel are used – the chrome layer protects against corrosion and wear while preserving the seals. Precision-ground and honed cylinder tubes ensure dimensional accuracy and smooth motion. High-quality sealing systems with scrapers (depending on use PU/NBR/FKM) minimize leakage and keep contaminants out of the oil. Optional protective tubes or bellows offer extra protection against dirt and moisture – particularly useful in outdoor and ramp operations.

Condition and maintenance: ensuring long-term performance

Even robust hydraulic systems require regular inspection and maintenance. Keep piston rods clean and dry and check all connections regularly for leaks. Even small leaks can reduce performance and cause oil loss. Regular hydraulic oil changes according to manufacturer specifications preserve lubrication and prevent residue buildup. Protective tubes or bellows add further protection against dust, dirt, and moisture – especially for vehicles with tail gates used outdoors daily. A well-maintained hydraulic system reduces downtime and significantly extends the lifespan of the entire lifting unit.

Precision and durability: what really matters for lift gates

Hydraulic cylinders are among the most safety-critical components of every tail gate. Inferior versions increase the risk of leakage, power loss, or sudden failure – with potential consequences for vehicle, load, and operator. Certified truck spare parts made from high-strength, corrosion-resistant materials ensure consistent performance, dimensional precision, and long service life – even under harsh conditions. This keeps lift gates reliable, precise, and safe, even under heavy loads and changing weather.

Practical knowledge: use and function in everyday operations

Hydraulic cylinders are used in almost all loading and lifting systems – from delivery vehicles to construction trucks and special-purpose vehicles with tilting mechanisms. They provide the power transmission for lifting, lowering, and locking the platform. Thanks to standardized dimensions and mounting interfaces, many models can be replaced or serviced precisely. At SULEJ Ladebordwand, functionality is key: we supply tested hydraulic cylinders and spare parts perfectly matched to common systems. This ensures reliable operation, maximum performance, and minimal maintenance effort.

Frequently asked questions about hydraulic cylinders for tail gates and lift gates (FAQ)

How can I recognize a defective hydraulic cylinder?

Typical signs include visible oil leakage at seals or fittings, uneven movements, power loss, or unusual noises during operation.

Can a hydraulic cylinder be repaired?

In many cases, yes – usually by replacing seals or guides. However, if piston rods are bent or damaged, a complete replacement is recommended.

How can I find the right hydraulic cylinder for my lift gate?

Identification is based on the serial number or the technical data on the system nameplate. Measurements of the piston rod and cylinder also help determine the correct version.

What is the difference between single-acting and double-acting cylinders?

A single-acting cylinder operates hydraulically in one direction – the return motion occurs by weight or spring force. Double-acting cylinders are pressurized in both directions, offering higher precision and control.

How often should the hydraulic oil in tail gates be changed?

Generally once a year or according to manufacturer specifications. Fresh hydraulic oil maintains lubrication, protects seals and valves, and preserves the performance of the entire system.