Hydraulic Behind Cylinder for Frame Support for Truck Cranes

Product Description

Hydraulic Behind cylinder for frame support for truck cranes

1. High Load Capacity & Durability

• Heavy-Duty Construction: Made from high-strength steel to handle extreme bending and compressive forces.

• Long Stroke Lengths: Supports multi-stage telescoping booms (up to 50+ meters in large cranes).

2. Precision Control & Smooth Operation

• Proportional Valve Compatibility: Enables fine-tuned load positioning (critical for overhead powerline work).

• Buffered End-Stops: Reduces shock at full extension/retraction, preventing structural damage.

3. Compact & Lightweight Design

• Hollow Piston Rods: Reduce weight while maintaining strength (common in knuckle boom cranes).

• Space-Saving Integration: Fits within tight crane chassis designs.

4. Corrosion & Wear Resistance

• Hard-Chrome Plated Rods (25+ µm thickness) + Stainless Steel Options for marine/coastal use.

• Dust-Proof Seals protect against abrasive particles.

5. Safety Features

• Load-Holding Valves: Prevent dangerous drift during power loss (ISO 4413 compliant).

• Burst Protection: Reinforced welds and pressure relief valves for overload scenarios.

 

Primary Applications in Truck Cranes

1. Boom Telescoping & Luffing

• Main Boom Cylinders: Control extension/retraction in truck-mounted cranes.

• Jib Cylinders: Adjust auxiliary boom angles for precision lifts.

2. Stabilizer & Outrigger Systems

• Horizontal/Vertical Outrigger Cylinders: Provide stability on uneven terrain (up to 500+ kN force).

3. Load Moment Control

• Overload Protection Cylinders: Integrate with LMI (Load Moment Indicator) systems to prevent tipping.

4. Hook & Winch Positioning

• Telescopic Hook Cylinders: Enable remote hook height adjustment (used in utility cranes).

5. Specialized Functions

• Rotator Cylinders: For grapple/log cranes in forestry.

• Tilt Cylinders: Adjust platform angle in aerial bucket trucks.

Feature	Truck Crane Cylinders	Standard Industrial Cylinders
Pressure Rating	350-500 bar (5,000-7,250 psi)	150-300 bar (2,175-4,350 psi)
Rod Protection	Chrome-plated + wiper seals	Basic wipers
Mounting	Trunnion/Clevis (dynamic loads)	Flange/Male threads
Maintenance	Sealed-for-life lubed bearings	Regular greasing required

The above is only a small part of our hydraulic cylinder products. Please contact us for more information and let us know your usage scenario. We can recommend the most suitable and cost-effective hydraulic cylinder for you. Colleagues, we also support customization to meet different special purposes

Detailed Photos

 

Application

 

Company Profile

EVER-POWER., founded in 2002, is located in Hangzhou City, one of the main manufacturers and exporters of hydraulic cylinders in China. With high-quality products and services, we have won a trustworthy reputation with customers all over the world on the basis of mutual benefit. We firmly believe that reputation and customers are our top priority. Through 16 years of efforts, we have won the trust of customers at home and abroad. At present, Jinwei hydraulic components have been exported to more than 30 countries and regions such as the United States, Canada, Russia, Poland, Germany, Italy, France, Austria, Brazil and Colombia. hydraulic cylinder has reliable quality, stable performance and durability. It is completely interchangeable with the original parts. At the same time, through our own product designers, we can provide customized products and accept OEM orders. We will continue to develop new products and improve our services. If you are interested in any of our products or need any similar products, please contact us or visit our website for more details. We look forward to the opportunity to become your supplier in the near future.

Design

Our specialized staff is at your disposalfor technical consultancy relating your project and the best type of materials touse based on your application . We mostly work on drawing , preparing personalized projects according to customer needs

Once the project is defined , we produce our technical drawing by CAD 2D-3D systems and supply it to our customer for approval

Raw Materials

An accurate raw materials and seals selection brings to save costs and allow to produce high quality and powerful cylinders . For that reason , in the materials choice we consider the application field of our cylinder and the environment where it will work Specifically for chromed bars and tubes ,we work only with producers or reliable suppliers

Cylinders Production

We produce about 120.000 cylinders per year and the whole process develops in our factory : cutting of raw materials ,turning and milling machining , components and accessories welding , cylinders mounting and final testing

All the above steps are made with latest generation CNC machines , welding robotized stations and specially made equipment.

Pressure Testing

Different types of oil cylinders have different pressure testing platforms, and it is necessary to install a suitable type and size of oil cylinder for pressure testing; The pressure testing process needs to be strictly carried out in accordance with the factory test standards;

 

Packaging & Shipping