Product description:

Hydraulic cylinders are actuators that convert hydraulic energy into linear mechanical force. They have a compact structure, high output force, and smooth operation. They are the core components for performing actions such as pushing, pulling, lifting, and pressing in various mechanical and industrial systems, and are widely used in construction machinery, metallurgy, mining, shipping, and other fields.

A Chassis telescopic cylinder is a specialized hydraulic actuator designed to provide extended linear motion within limited installation space. It is widely used in construction machinery, dump trucks, cranes, trailers, agricultural vehicles, and heavy-duty equipment where long stroke and compact design are essential. Mounted on the chassis or undercarriage, this cylinder enables lifting, lowering, and adjusting mechanical structures with high force and smooth motion.

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Structure and Working Principle

A chassis telescopic cylinder consists of multiple nested stages (sleeves or tubes), each capable of extending sequentially through hydraulic pressure. The main components include the cylinder barrel, piston assembly, piston rods, seals, guide rings, and end caps. When hydraulic oil is pumped into the base chamber, the pressure extends the largest stage first, followed by the smaller ones, achieving a long total stroke within minimal retracted length.

When the hydraulic flow reverses, the stages retract smoothly into the base section, allowing compact storage and easy operation. This mechanism provides efficient and controlled motion, making the telescopic cylinder a vital component for chassis-mounted lifting and pushing systems.

Materials and Manufacturing Process

The cylinder body and stages are made from high-strength alloy steel or seamless precision tubes, ensuring excellent load-bearing capacity and durability. The inner surfaces are precision honed to minimize friction and wear on seals. The piston rods are hard chrome plated or QPQ treated, providing superior corrosion and abrasion resistance.

Using advanced CNC machining, automated welding, and induction heat treatment, each part is manufactured with tight dimensional tolerances. The surface treatment ensures smooth operation, long service life, and resistance to harsh environmental conditions. Every cylinder undergoes thorough cleaning and assembly in a dust-free environment to guarantee hydraulic system reliability.

Key Features and Advantages

Multi-Stage Telescopic Design: Offers long stroke lengths with compact retracted size, maximizing space utilization.

High Working Pressure: Capable of operating under pressures up to 35 MPa or higher for powerful lifting and pushing performance.

Superior Sealing Performance: Equipped with high-quality seals from brands like NOK, Hallite, or Parker, preventing oil leakage and contamination.

Robust and Durable Construction: Made from premium materials with hardened surfaces for excellent wear and corrosion resistance.

Smooth and Stable Operation: Optimized hydraulic design ensures precise motion control and minimal vibration.

Customizable Design: Available in various bore sizes, stages, mounting configurations, and stroke lengths to meet specific chassis system requirements.

Easy Maintenance: Modular design allows for quick inspection, seal replacement, and simple maintenance procedures.

Working principle of hydraulic cylinder:

Applications:

The hydraulic cylinder is an energy conversion device that converts hydraulic energy into mechanical energy. It is the core executive component in the hydraulic system. The hydraulic cylinder uses hydraulic oil to drive the piston to move, converting hydraulic energy into linear reciprocating motion. When the hydraulic oil enters the cylinder barrel, it pushes the piston rod to extend or retract, completing the predetermined action. The direction and speed of its movement are regulated by the hydraulic control system. The hydraulic cylinder consists of a cylinder barrel, cylinder cover, piston and piston rod, sealing device, and buffering device. According to its structure, it can be classified as piston type, plunger type, multi-stage telescopic sleeve type, and gear rack type. Hydraulic cylinders are widely used in machine tools, construction machinery, vehicles, and other fields, featuring a simple structure and smooth movement.

The chassis telescopic cylinder is widely used in:

Dump trucks and tipper vehicles – for lifting and tilting truck bodies during unloading operations.

Cranes and lifting equipment – to extend and retract booms or outriggers.

Agricultural and forestry machinery – for steering, lifting, or adjusting implements.

Trailers and transport vehicles – for chassis stabilization and hydraulic suspension systems.

Construction and mining equipment – to operate chassis-mounted arms, pushers, or supports.

In all these applications, the telescopic cylinder ensures powerful, smooth, and safe movement, improving overall machine performance and efficiency.

Quality Control and Testing

Each chassis telescopic cylinder undergoes strict quality inspection and hydraulic testing before delivery. Tests include:

Pressure resistance and leakage testing

Dimensional and surface finish inspection

Fatigue and endurance performance testing

Coating adhesion and corrosion resistance verification

These comprehensive tests ensure long-term reliability, safety, and performance in extreme operating environments.

Company profile:

Since its establishment in 2014, Wuxi Hengxin Zhicheng Co., Ltd. has rapidly grown into a leading enterprise in the steel manufacturing industry. We focus on the research, production and sales of seamless steel pipes, special-shaped steel pipes and hydraulic cylinders, and are committed to providing customers with high-quality, customizable products that fully meet diverse application needs.

Our products are exported to global markets such as the Middle East, South America, Africa, and Southeast Asia, and are highly trusted by large purchasers and customers in the steel industry. We always prioritize quality, reliability and customer service, and attach great importance to establishing long-term and stable cooperative relationships with customers. We provide each customer with tailor-made solutions.

We continuously promote technological innovation and improve service capabilities and production efficiency. Through an efficient online platform, you can browse our best-selling products at any time and communicate with the sales and support teams in real time to conveniently obtain the information you need. We sincerely invite partners from all countries to visit, exchange and provide guidance, and jointly explore more possible cooperation opportunities!

Certification:

Packaging and Transportation:

【Package standard】

We use steel bands to tightly package the products into hexagonal bundles. The structure is stable and not prone to deformation. Each bundle is equipped with two high-strength nylon straps to ensure the safety and convenience of the lifting operation.

To meet various maritime transportation needs, we offer a range of customized packaging options, including full coverage with oilcloth, moisture-proof wooden boxes, and high-strength protective frame packaging, to ensure the maximum safety of goods during transportation.

【Guarantee for transportation】

We offer 20-foot and 40-foot standard container transportation services. Each container can carry up to 25 tons of goods and we can accept trial orders with a minimum of 5 tons. This allows for flexible adaptation to your purchasing scale. All packaging complies with maritime shipping standards to ensure that the goods are delivered to the destination efficiently and safely.

Why us?

We focus on the research, development, production and sales of seamless steel pipes, special-shaped steel pipes and hydraulic cylinders. We have a complete production chain and an advanced equipment system, including piercing machines, cold drawing machines, hot rolling machines, high-precision flaw detection and testing equipment. The company has passed multiple authoritative certifications such as ISO9001, API, SGS, CCS, DNV, ABS, CE, RoHS, etc., ensuring that each product complies with international standards. We are committed to providing customers with high-quality, customizable solutions to meet diverse application needs.

Relying on our own built processing base and modern workshops, combined with multiple branches and storage centers across the country, we have achieved sufficient inventory and efficient logistics coordination, significantly shortening the delivery cycle and ensuring the rapid delivery of orders.

We have established a complete service and support system. After the order is signed, the professional after-sales team can provide timely and safe on-site guidance and technical support to ensure that customers are at ease throughout the process from procurement to use.

FAQ：

1. Do you support customized design and production?

Sure. We have a professional engineering team that can conduct customized design and production with special sizes, control systems or OEM according to your requirements.

2. How fast can you deliver?

In stock sizes, it takes 3-5 days. For customized sizes, it takes 30-35 days.

3. What payment methods do you support?

We support TT payment. Generally, 30% to 50% of the payment is made in advance, and the remaining amount is paid before shipment.

4. Can you provide material certification (MTC)?

Yes, we will provide MTC to you after production is completed to ensure that the material quality meets the standards.

5. What is the minimum order quantity?

Generally, we accept trial orders. The minimum order quantity is 1-3 tons, which can be determined according to different products.