Multi-stage hydraulic cylinder
When the pressure oil enters from the rodless cavity, the cylinder barrel with the largest piston active area begins to extend out, and when the end is reached, the cylinder barrel with the next next most effective area of the piston begins to protrude. The order of telescopic hydraulic extension is extended from large to small, and a long working stroke can be obtained, and the smaller the effective area of the outer extension cylinder barrel, the faster the extension speed.
Therefore, the extension speed changes from slow to fast, and the corresponding hydraulic thrust changes from large to small; This law of change of thrust and speed is suitable for the thrust and speed requirements of various automatic loading and unloading machinery. The order of retraction is generally retracted from small to large, and the axial length during retraction is shorter, occupying less space and compact structure. It is commonly used in the hydraulic system of construction machinery and other mobile machinery, such as cranes, dump cars, etc
Multi-stage hydraulic cylinder
Liner material : copper (prolongs the life cycle of cylinder)
Inside Cylinder Tube Dia : 40 – 1000 mm (1.5 – 40 inch)
Stroke : 50mm—16000mm
Design Pressure : Max 700 bar (10150 PSI)
Seals Type : PARKER (USA), MERKEL (Germany) or NOK (Japan)
Bearings : LONGXI (China) or SKF
Certificate : DNV, ABS, Lloyds, BV, GL, KR, NK, RINA, RS and CCS
Tolerance EXT : DIN2391, EN10305, GB/T 1619
Application : Engineering machinery (Excavator/ Forklift/ Cranes/ Tipper truck,etc), mine, metallurgy, shipping, water conservancy, etc.
Packing : Wooden case
we can make a design according to customer’s requirements.If you require our engineer to make a design,please advise us the following 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 chroming film thickness,Surface hardness etc .
11. Painting and other spare parts requirements .
