Product Description
Product Application
ETERNAL company design and manufacture hydraulic cylinders for different applications:
1.Construction machinery
2.Mining machinery
3.Hydraulic press, including Forging press, Die casting machine, Injection Molding Machine, etc.
4.Extrusion press
5.Metallurgical machinery, like Rolling Mill Servo
6.Hoisting machinery, including marine jib crane,marine crane,hydraulic knuckle boom marine crane,etc.
7.Excavating machinery, used in telescopic boms, knuckle booms, fixed double taper booms,etc.
8.Petroleum drilling machinery
9.Hydraulic lifting platform
10.Marine equipment
11.Hydro power project
Design
Not only we could manufacture all kinds of heavy duty hydraulic cylinder on hydraulic press according to the drawing from customers,but also we could make a design according to customers'requirements. If you require our engineer to make a design, please advise us thefollowing specification :
1. Rated pressure
2. Working pressure
3. Test pressure
4. Working condition and environment ,for example ,temperature ,working frequency
5. Pulling force ,and return stroke force
6. Pulling and return speed
7. Assembly size
8. Seal ring requirements .For example , brand ,seal material etc .
9. Tube and piston rod raw material requirements
10. Piston rod surface treatment requirements, for example chromating film thickness , Surface hardness etc .
11. Painting and other spare parts requirements .
Manufacturing capability and cylinder size range
Max bore diameter: Ø1200mm
Max stroke: 12Meter
Max text pressure: 50MPa
Detailed Images
1.Cylinder tube
According to the cylinder pressure and inside diameter size, different steel tube Would be choosed.
ID ≤300mm, choose cold rolled precision seamless tube
300mm≤ID ≤500mm, choose hot rolled seamless tube
500mm≤ID ≤1000mm, choose forged tube
Steel grade : SAE1020, SAE1045, 27SiMn , S355JR, S355J2G3, St52-3, SUS304, SUS316L etc .
Inside boring and honing , roughness R0.2-R0.3
Inside chromating : if necessary ,tube inside chromating could be applied
2Piston rod
steel grade : SAE1045, 42CrMo4, SUS410 ,SUS420, SUS304, SUS316L
Eternal company ensure that every piece piston rod would be surface hardened before chromating, surface hardness is HRC55~60 , Chromating film thickness is 0.03~0.04mm if there is no other specific requirements.
3.Seal ring and O ring
According to the customers' requirements and working condition, eternal company would choose suitable
seal ring kit, seal ring brand include: Parker, Merkel, NOK, Guangzhou Rubber institute, Taiwan brand etc. Eternal company would supply suitable seal solution for their customer so that hydraulic cylinder has more lifetime, easy maintenance and simple repairing.
4.Tube and flange welding
The welding on cylinder tube and flange would be Ultrasonic tested every time, the welding seam would be
cleaned before machining. Eternal company ensure that every welding seam has no any leak during lifetime.
5.Assembly and pressure test
Before hydraulic cylinder is assemblied, every spare parts would be measured and cleaned. After hydraulic cylinder is assemblied, pressure test would be carried out one By one, eternal company ensure that testingpressure is higher 30%-50% than working pressure, and pressure holding time 30~60 minutes is necessary. Every piece hydraulic cylinder must be tested completely without any leak.
Packing & Delivery
Our Company
Company Profile
Jiangyin Eternal Heavy Industry Co. Ltd was established in 2008, the main products include: all kinds of forging rolls, patio drilling rig drilling tools, and various of large hydraulic cylinders.
The company produces various of forging rolls, which are widely used in steel mill rolling mills, copper and aluminum strip rolling mills, cement rotary kilns, roll presses, ore crushers, paper making rolls, rubber and plastic rollers, cylinder plungers, piston rods, hydraulic press tie rods, etc. The outer diameter of the roller can reach 800mm, and the length can reach 6000mm. The length of the piston rod and pull rod can reach 11 meters.
The company has 15 years of experience in the production of cutterheads and drilling tools for patio drilling rigs. The diameter of the cutterhead can reach 6 meters, and the drill pipe is from 8"-13". Products have been exported to many countries, including South Africa, Brazil, Peru, Mexico, Vietnam, Russia and so on.
The various large hydraulic cylinders and high-precision AGC servo cylinders produced by the company are widely used in forging machinery, engineering and mining machinery, water conservancy engineering, ship machinery, port machinery, hydraulic lifting equipment, etc. Up to now, large cylinders have been widely used in various hydraulic presses, extruders, die-casting machines, injection molding machines, etc. In 2008, servo cylinders for steel mill rolling mills with a bore of 950mm were successfully exported to Poland. In 2009, the hydraulic cylinder with a stroke of 10 meters was successfully exported to the Pakistan water conservancy project. In October 2016, large cylinders weighing 90 tons per unit have been successfully exported to Russia. The range of cylinders that the company can produce: cylinder diameter 1000mm, stroke 12 meters, test pressure up to 50MPA.
The company has built a heavy workshop of 8,000 square meters. The workshop is equipped with double-decker driving. The lifting height can reach to 16 meters, and the design lifting capacity is 50 tons. The company has perfect machining equipment, heat treatment equipment and testing equipment, including: 11m horizontal lathe, vertical machining center, digital display boring and milling machine, gantry machining center, cylindrical grinding, various types of CNC lathes, 13m deep hole boring machine, 13m CNC deep hole honing machine, tempering furnace with a length of 6 meters, a quenching tank with a length of 10 meters, a medium frequency quenching machine with a height of 6 meters, and a straightening machine with a pressure of 500 tons. Testing equipment includes: intelligent pressure test bench, ultrasonic flaw detector, magnetic particle flaw detector, coating thickness gauge, roughness tester, etc. The company is committed to providing customers with a full range of system solutions, to revitalize the national equipment to contribute, in the past 15 years, the company continues to develop the market and research and development of new products, the company's products have been exported to more than 50 countries and regions.
The company has passed ISO9001, ISO14001, ISO45001 system certification. The company sincerely hopes to carry out technical exchanges with domestic and foreign counterparts, and looks forward to cooperating with customers in various industries, Jiangyin Eternal Heavy Industry Co. Ltd welcomes your visit!
Audited Supplier 
){kind=link}
){kind=link}