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Hydraulic Press & Forging Cylinders — Large Bore, 350 Bar OEM Manufacturer China

Wuxi Hengshui Machinery is an experienced OEM manufacturer of hydraulic cylinders for forging presses, hydraulic presses, extrusion presses, ring rolling machines, and isothermal forging systems. Our press and forging cylinders operate at the highest end of the pressure and bore-size spectrum — up to Ø800 mm bore and 350 bar working pressure — and are manufactured with the ultra-precise dimensional control that press applications demand.

Forging press cylinders must sustain millions of high-energy load cycles without fatigue or seal failure. We use premium alloy steels (42CrMo4, 34CrNiMo6), deep-hole boring to Ra 0.4 µm internal finish, hard chrome plated rods ground to h6 tolerance, and Polyurethane or FKM seals selected for the specific pressure and temperature profile of each press. All cylinders are proof-tested at 1.5× working pressure before despatch.

Parameter	Specification
Bore range	Ø100 mm – Ø800 mm
Stroke range	50 mm – 6,000 mm
Working pressure	160 – 350 bar (custom to 500 bar for extrusion presses)
Seal compound	PU (polyurethane) standard; FKM for high-temperature isothermal forging
Rod diameter	To Ø500 mm; ground and hard chrome plated
Material spec	42CrMo4 / 34CrNiMo6 alloy steel; material certs included
Pressure test	1.5× working pressure; test certificate included
Applications	Open die forging, closed die forging, extrusion, ring rolling, isothermal forging, press brakes

Forging Press Cylinder Applications

Open die forging press main cylinders

Very large bore hydraulic cylinders (Ø300–Ø800 mm) for open die forging presses from 500 T to 10,000 T. Multiple cylinder assemblies, synchronised control.

Closed die / impression die forging

High-precision cylinders for closed die forging. Stroke repeatability within ±0.1 mm. Servo-hydraulic control interfaces available.

Isothermal forging press cylinders

FKM-sealed cylinders for forging titanium, nickel superalloys, and aluminium alloys in heated dies (up to 950°C die temperature). Thermal isolation of cylinder from die essential.

Aluminium / copper extrusion press

Very large bore (Ø400–Ø800 mm), high-force cylinders for aluminium and copper extrusion. Bore-to-pressure matching critical for energy efficiency.

Ring rolling machine cylinders

Precision cylinders for mandrel feed, axial roll, and guide roll drives in radial-axial ring rolling machines.

Hydraulic press brake / bending press

Standard and custom cylinders for press brakes from 40 T to 1,000 T. Synchronised pairs with position feedback for beam parallelism.

Forging hammer hydraulic system

Hydraulic actuators for free-forging hammer upper ram, counter-blow mechanisms, and anvil clamping systems.

ISO 9001:2015 Certified

Wuxi, Jiangsu, China — Factory Direct

24 h Quote · MOQ 1 Piece · OEM/ODM

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Hydraulic Press & Forging Cylinders

Press Machine Tie-Rod Cylinder 280/140-458 280/140-458

铝材生产线出口四拉杆油缸 200/110-1200 200/110-1200

Hydraulic Press Differential Rapid-Advance Cylinder 420/380-2500 420/380-2500

Die-Casting Machine Hydraulic Cylinder 160/110-350 160/110-350

Die-Casting Machine Hydraulic Cylinder 200/100-500 200/100-500

Vulcanizing Press Flip Cylinder 80/40-320 80/40-320

Vulcanizing Press Pressurizing Cylinder 360/200-1700 360/200-1700

Rubber Machinery Plunger Cylinder 720/710-870 720/710-870

Hydraulic Press Tie-Rod Cylinder 100/45-318 100/45-318

Hydraulic Press Tie-Rod Cylinder 130/90-178 130/90-178

1200-Tonne Hydraulic Press Main Cylinder 800/750-1800 800/750-1800

Hydraulic Press & Forging Cylinders — Large Bore, 350 Bar OEM Manufacturer China

Forging Press Cylinder Applications

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