Custom Tie-Rod Hydraulic Cylinders Manufacturer

Roughness of cylinder tube less than Ra 0.2, bore sizes from 25 to 200 mm.
MOQ starts from 10 pieces for custom cylinders, delivery within 30 days.
Send us your drawings or specs for an engineering review and quote.

Brands We Serve in Hydraulic Industry

Tie-rod hydraulic cylinders

Tie-rod hydraulic cylindes, also know as NFPA cylinders feature a compact construction. They are easy to install and disassemble. High-strength tie rods run through both ends of the cylinder barrel, with nuts securing the front and rear end caps, making it sturdy. 7 MPa to 21 Mpa is the pressure range that they can bear while operating. They are ideal for use in machine tools, woodworking machinery, textile machinery, and other fields.

Tie rod cylinder barrel features diverse material options to suit various operating conditions, including cast iron, high-strength seamless steel tube, cast steel and forged steel. The piston rod surface undergoes a quenching treatment, achieving a hardness of 58–62 HRC. Besides, Hard chrome plated piston rod with superior wear and corrosion resistance, coating hardness HV900–1100. High-strength alloy steel tie rods are precision-machined with excellent impact resistance.

Our tie rod hydraulic actuator adopt special ultrasonic precision machining technology and can be customized according to the drawings or dimensions you provide.

Your Reliable Supplier of Tie-rod Hydraulic Cylinder

The tie-rod style hydraulic cylinder is widely used in hydraulic systems. Although the tie-rod cylinder has a simple structure, uneven stress on the rods can still lead to leakage or shutdown. During repeated extension and retraction, the piston rod must withstand both wear and corrosion. That’ s why we apply advanced surface treatments to significantly extend its service life.

With more than ten years of experience in hydraulic cylinder manufacturing, we have put the most effort into perfecting our tie-rod cylinders. Therefore, we demand the highest precision and consistency in manufacturing our tie-rod construction hydraulic cylinders. From cylinder barrel rolling-honing and piston rod quenching & chrome-plating, to tie-rod thread roll forming and coaxiality control during full-unit assembly, we have established our own process specifications for every step. Our cylinders are trusted across multiple industries, including woodworking and textile machinery. The reason we enjoy a loyal base of repeat customers is simple: they know our cylinders deliver the precision and longevity they can rely on.

Based on your equipment type, installation space and working conditions, we offer different material and process options following your requirements. If you run into any operational problems after delivery, our technical engineers will talk to you directly. We believe business is not just a one-time deal. It is a long-term partnership that starts with your very first order.

Tie-Rod Hydraulic Cylinders

Applications of Hydraulic Tie-Rod Cylinders

Agricultural and Operational Machinery

Tie-rod type hydraulic cylinders are widely used in agricultural tractors and harvesters, which demand high load-bearing capacity, flexible adjustment and smooth material handling.

Tie-rod cylinders are easy to maintain. The components can be replaced right in the field to keep operations running during busy harvest seasons. Tie-rod hydraulic cylinders enable precise adjustment for header lifting and conveyors, letting harvesters adapt to field undulations and crop heights, which ensures smooth cutting and material conveying.

Woodworking Machinery

Hydraulic cylinders with tie rods are used in woodworking machinery such as panel saws, sanders and wood presses. In these applications, the cylinders power wood clamping, material feeding and component lifting operations.

Woodworking shops generate heavy dust, which can easily damage cylinder seals. Our tie-rod cylinders feature easy-to-replace seals that greatly cut down the time for repairs. Besides, tie-rod hydraulic cylinders deliver adjustable output thrust for wood of different hardness levels.

Construction Machinery

Tie-rod hydraulic cylinders are widely used in excavators, cranes and concrete pump trucks. The cylinders power excavator booms, bulldozer buckets and crane booms. Such applications feature compact installation space and demand great layout flexibility.

Our tie-rod hydraulic cylinders support multiple mounting options including flange, clevis and trunnion, flexible installation for construction-site applications. Meanwhile, our cylinders operate within a pressure range of 7-21 MPa, meet requirements of construction machinery.

Material-Handling Equipment

Tie-rod hydraulic cylinders power equipment such as forklifts and conveyors for lifting, pushing and pulling, and tilting operations. These applications demand excellent high-cycle performance and long-term durability.

Our tie-rod cylinders allow quick seal replacement, making them well-suited for high-frequency, long-hour continuous operation. Besides, the chrome-plated piston rod delivers great wear and corrosion resistance, ensuring a long service life even in dusty working conditions.

Offshore Equipment

Tie-rod hydraulic cylinders power various offshore equipment for precise control and force output. They are usually used on underwater valve actuators and platform hatch mechanisms.

Humid marine conditions require extremely high corrosion resistance for offshore equipment. Our cylinders can be custom-built with stainless-steel tie rods and anti-corrosion coatings to withstand humid marine conditions and seawater exposure.

Transport Equipment

Threaded rod cylinders serve as critical components for lifting and lowering operations on various transport equipment in the transportation industry. They are widely used in devices such as bus access ramps. Such applications demand outstanding running smoothness and control precision.

Tie-rod hydraulic cylinders achieve millimeter-precision extension and retraction, delivering reliable and stable performance.

Aerospace Equipment

Tie-rod hydraulic cylinders are frequently used in working conditions such as aircraft door actuation and swing-rod drive for rocket launch platforms.

Aircraft and rockets require extremely high weight-reduction performance for components. Compared with other hydraulic cylinders, our tie-rod cylinders provide powerful thrust within a compact construction.

Textile Machinery

Bolted hydraulic cylinders serve as core actuators for clamping, opening-closing and tensioning operations on various textile machinery. Suitable for spinning, weaving processes.

Textile machinery generally falls under light-industry equipment, and the working pressure of tie-rod hydraulic cylinders perfectly meets the operating demands of the machinery. Furthermore, the cylinders feature smooth low-speed operation with excellent cushioning performance.

Pressure-Bearing Limitations on Tie-Rod Cylinders

The pressure-bearing capacity of tie-rod hydraulic cylinders is limited by the four-tie-rod construction. As the main load-bearing components, insufficient strength of the tie rods directly set the upper limit of the cylinders’ operating pressure.

As the first step in solving the problem, we use high-strength alloy steel for tie rods to improve their tensile strength. Meanwhile, we select high-quality seamless steel tubes for the cylinder barrel, with tightly controlled machining precision to keep barrel deformation within acceptable limits under high-pressure working conditions. Next, we adopt a pre-tensioned structural design with eight high-strength alloy tie rods to form a stiffer load-bearing frame, which further improves the cylinder’s pressure-bearing performance.

Most importantly, we offer highly flexible customisation services. According to customers’ actual working conditions, we can custom-build tie-rod hydraulic cylinders for specific pressure ratings with various bore sizes, stroke lengths, mounting styles, heat-resistant seals and special materials.

Seal Failure on Tie-Rod Cylinders

Seal failure is a common malfunction of tie-rod cylinders. Insufficient torque on tie-rod bolts and tie-rod elongation under load often cause external oil leakage. Besides, damaged piston seals and system pressure shocks lead to internal oil leakage, which can trigger a series of problems: insufficient cylinder pulling force, load drifting, and pressure-holding failure. In serious cases, it may even reduce the overall efficiency of the hydraulic system and cause equipment shutdown.

To solve these problems, we fully consider core operating-condition parameters including pressure rating, temperature, media compatibility and dynamic performance for accurate seal selection.

Furthermore, we strictly follow installation specifications to ensure good coaxiality for tie-rod hydraulic cylinder’s connection to the load, and universal joints or floating supports will be fitted as needed. In addition, dust covers are fitted for piston-rod protection. For tie-rod tightening, we retighten tie-rods diagonally and evenly in 2-3 passes to achieve specified torque values.

Most critically, once the exact leakage point is identified, we carry out full inspections on seals, piston rods, cylinder barrels, guide bush, fittings, valve manifolds and system pressure, resolving the problem at its source.

Stroke-Limitation on Tie-Rod Hydraulic Cylinders

Tie-rod hydraulic cylinder have a design limitation that restricts their stroke length. The stability of tie-rods is dependent on stroke length: the longer the stroke, the lower the tie-rod stiffness, and the higher the risk of structural buckling. So, the tie-rods may deform or even become completely unusable. In addition, for long-stroke applications, long-term operation may cause tie-rod elongation and loosening. Without timely retightening, gaps will widen, leading to severe leakage.

To solve these problems, we closely control dimensional precision for long-length components. We machine the cylinder tube with high-precision deep-hole boring and burnishing, ensuring the inner wall meets long-stroke operation requirements regarding straightness, roundness and surface roughness. Furthermore, we machine all tie-rods from the same batch of raw material. They are produced in a single clamping setup, ensuring all tie-rods feature equal length and consistent thread start positions. We also machine stress-relief grooves at the thread ends to lower the risk of tie-rod fatigue fracture. Meanwhile, we increase the piston-rod diameter for higher stiffness. Besides, we fit buffer devices at stroke ends to prevent hard impacts.

Certifications

REACH Certificate

ISO 9001 Certificate

ISO 14001 Certificate

Certificate of Conformity

Why Work with Us

Cleanliness Control

We closely control assembly conditions and cleaning processes, and use high-pressure circulating flushing together with fine filtration, reducing risks such as spool sticking and seal scratching and extending the service life of the equipment.

Rapid Prototyping

We offer prototype customization services for you to trial-fit and test the prototype on your actual equipment, avoiding unnecessary costs caused by mold rework.

Cross-Industry Experience

We have accumulated extensive tie-rod cylinder application cases, so that we can quickly identify potential risks under your actual operating conditions and offer professional advice.

Component-Level Traceability

We keep detailed records for every order you place, allowing us to reproduce parts to the original specifications and guarantee consistent component dimensions, even when you require replacement tie-rods, guide sleeves or pistons years later.

Customizing Your Tie-Rod Cylinders

For custom tie-rod hydraulic cylinders, you need to provide drawings or parameters, including working pressure, ambient temperature and installation space.

After receiving your drawings, our technical team will review them for manufacturing feasibility and go through all details with you. For tie-rod hydraulic cylinders, we pay attention to the actual working conditions. If the cylinder works in dusty or corrosive environment, we will fit protective covers and apply special coatings. Besides, we will verify mounting style and load-bearing

position to confirm the structure’s compatibility with actual loads. Finally, we will double-check installation dimensions and key parameters, making sure all details are accurate. Our engineers are available to support you at any time. We make sure the finished tie-rod hydraulic cylinder works well under your actual operating conditions.