Hydraulic Cylinders: What Buyers Should Know
A hydraulic cylinder converts fluid pressure into linear force and is the workhorse of excavators, agricultural machinery, tipper trucks, and industrial presses. Buyers source from China hydraulic cylinder manufacturers for competitive pricing on welded and tie-rod designs across bore sizes from 20mm to 500mm.
The critical parameters are bore size, stroke length, working pressure, and seal material. Surface treatment such as chrome-plated rods and certifications like ISO 9001 and CE matter for durability. The curated suppliers below are screened against these criteria.
Curated Suppliers — Hydraulic Cylinders
7 Checks Before Choosing a Hydraulic Cylinders Supplier
1. Bore & stroke
Confirm bore, rod, and stroke match the machine's force and travel requirements.
2. Working pressure
Match rated pressure (usually 16-25 MPa) to the hydraulic system.
3. Seal quality
Ask for brand seals for long, leak-free service life.
4. Rod treatment
Chrome-plated rods resist corrosion and scoring.
5. Mounting style
Specify clevis, flange, or trunnion mounting before ordering.
6. Welding quality
Ultrasonic or X-ray weld testing matters for high-pressure welded cylinders.
7. Certification
Confirm ISO 9001 and CE/EN where your market requires them.
Frequently Asked Questions
What is the difference between welded and tie-rod hydraulic cylinders?
Tie-rod cylinders are easier to service and common in industrial use, while welded cylinders are more compact and preferred for mobile equipment.
What working pressure do hydraulic cylinders use?
Most standard cylinders are rated at 16-25 MPa (about 160-250 bar), with heavy-duty units reaching 35 MPa.
Can Chinese manufacturers build custom hydraulic cylinders?
Yes, most factories offer full OEM/ODM with custom bore, stroke, mounting, and seal specifications.
What is the typical MOQ for hydraulic cylinders?
Standard models often start around 10-50 units, while fully custom cylinders may start at 100 units.