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Hydraulic Cylinder FAQ

Here you can find answers to frequently asked questions about our products and services, allowing you to quickly get the help you need.

frequently asked questions

What types of hydraulic cylinders do you offer?
We manufacture welded, tie-rod, telescopic, and custom hydraulic cylinders for various industrial, agricultural, and mobile applications.
How do I choose the right cylinder for my equipment?
Select based on working pressure, mounting type, stroke length, and operating environment. Our team can recommend the best model for your system.
What’s the difference between tie-rod and welded cylinders?
Tie-rod cylinders are easy to maintain, ideal for industrial use. Welded types are compact, stronger, and preferred for mobile or construction equipment.
Can your cylinders be used for both single-acting and double-acting applications?
Yes, we supply both types. Single-acting uses pressure in one direction, while double-acting provides force in both extension and retraction.
What pressure ratings are available for your cylinders?
Standard models range from 16MPa to 35MPa (2,300–5,000 PSI). Custom high-pressure designs are also available.
What materials are used for the cylinder tube and piston rod?
Cylinder tubes are made from honed carbon steel or stainless steel; rods are typically hard chrome-plated or nickel-plated for corrosion resistance.
What surface treatments do you offer for corrosion protection?
We offer chrome, nickel, zinc, or black oxide coatings depending on your application environment.
Can I provide my own drawings or samples for production?
Yes. Send your 2D/3D drawings or a sample; our engineers will confirm all dimensions and tolerances before production.
What seals do you use, and can they be replaced easily?
We use high-quality seals from brands like Hallite. They are easy to replace during maintenance.
What are the standard bore and stroke size ranges you can manufacture?
Bore sizes from 25 mm to 500 mm, and stroke lengths up to 3000 mm, depending on the cylinder type.
How should I install the cylinder correctly to avoid leakage or damage?
Ensure proper alignment, use compatible fittings, and tighten all connections to the recommended torque.
Use ISO VG 32–68 hydraulic oil. Keep it clean and free of water or contaminants.
How often should I replace the seals?
Typically every 1–2 years, depending on working conditions and frequency of use.
What are the signs of cylinder wear or failure?
Oil leakage, jerky movement, or reduced pressure are common indicators of wear.
Can the cylinder be repaired or rebuilt instead of replaced?
Yes, most cylinders can be rebuilt with new seals and parts.
How do you test your hydraulic cylinders before shipment?
Every cylinder undergoes pressure testing, leakage inspection, and dimensional verification before packing.
Do you provide quality certificates or test reports?
Yes. We provide inspection reports, material certificates, and pressure test results upon request.
How do you control surface roughness and dimensional accuracy?
We use precision CNC machines and surface roughness testers to maintain Ra ≤ 0.2 μm and accurate tolerances.
Are all cylinders 100% pressure-tested before delivery?
Yes, each unit is tested at 1.5 times the rated pressure to ensure zero leakage.
Do you comply with ISO or CE quality standards?
Yes, our cylinders meet ISO 6020/6022 standards and CE certification for export.
Can you manufacture customized hydraulic cylinders according to my drawings?
Yes. We specialize in OEM and custom hydraulic cylinders to match your specific requirements.
What information do I need to provide for a custom order?
Please share bore size, stroke, working pressure, mounting style, port size, and working environment details.
Do you support OEM with my logo and packaging design?
Yes. We can engrave your logo and design custom packaging with your brand identity.
Can you design a cylinder for special applications like dump trucks or presses?
Absolutely. Our engineers design cylinders for heavy-duty equipment, agricultural machines, and industrial systems.
How long does it take to develop and produce a customized model?
Generally 20–35 days after drawing confirmation, depending on order volume and complexity.
How do you determine the price of a hydraulic cylinder?
Pricing depends on materials, bore/stroke size, working pressure, and customization level.
What’s your standard lead time for production?
Normally 25–30 days. For urgent orders, we can shorten the lead time after confirmation.
Do you offer discounts for bulk orders?
Yes, we provide tier-based pricing for larger quantities and long-term cooperation.
Can you arrange urgent production for time-sensitive projects?
Yes. We have a fast-track production line for priority projects.
How do you handle international shipping and export documents?
We support CIF, FOB, or DDP shipping terms and provide full export documentation, including packing lists, invoices, and certificates.
What warranty do you offer for your hydraulic cylinders?
We offer a 12-month warranty from the shipment date against manufacturing defects.
How do you handle claims for defective products?
We analyze the issue, provide technical reports, and offer replacement or credit depending on the situation.
Can you provide spare parts for replacement?
Yes, we stock seals, rods, and other parts for long-term service support.
Do you offer technical support for installation or troubleshooting?
Yes. Our engineers are available for online guidance or video calls.
How do you ensure long-term cooperation and service for repeat orders?
We keep full production records and ensure consistent quality and lead time for every reorder.

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