3 / 4 / 5 Stage Heavy Duty Hydraulic RAM Telescopic Hydraulic Cylinder

     Retractable multi-stage sleeve hydraulic cylinder is a long stroke multi-stage sleeve piston rod hydraulic cylinder, retractable hydraulic cylinder, also known as retractable sleeve hydraulic cylinder or multi-stage hydraulic cylinder.
    Telescopic hydraulic cylinder is composed of two or more piston hydraulic cylinder set, the piston rod of the previous stage piston cylinder is the cylinder of the latter piston cylinder.
When pressure oil enters from the rodless chamber, the cylinder with the largest effective area of the piston starts to protrude. When the line reaches the end point, the cylinder with the effective area of the piston begins to protrude.
    Telescopic hydraulic stretching out in order from large to small in order to obtain a long working stroke, the effective cylinder extending the smaller the area, the faster the rate of extension.
Therefore, the slow out faster, the corresponding hydraulic thrust from large to small; this thrust, speed changes, is suitable for a variety of automatic loading and unloading machinery on the thrust and speed requirements.
   The order of retraction is generally followed by small to large retraction, the retraction of the axial length is shorter, smaller footprint, compact structure.
Commonly used in construction machinery and other mobile machinery, such as cranes, dump trucks and other hydraulic systems.

● High pressure, high strength and light weight miniaturization - design, material selection and processing technology and welding technology of cylinder block and piston rod are based on the analysis of cylinder load frequency, optimized strength and fatigue parameters, ultrasonic non-destructive inspection, Achieve high strength cylinder, lightweight miniaturization.

● Sealing system - choose PARKER, MERKEL, NOK and other imports of high-end seal, combined with the company's unique sealing system design to prevent sand and dust, reduce oil leakage, access to the best piston rod film.

● Cylinder - Cylinder body made according to suitable strength and size, the inner surface of which is processed by rolling to improve the surface hardness and abrasion resistance while ensuring the dimensional accuracy and roughness.

● Piston rod - based on high-frequency quenching, by coating a hard chrome surface, improved rust, abrasion and damage resistance, the surface after precision polishing obtained with uniform texture and

High finish, thus ensuring a good surface layer of oil film, improve product life.

● Buffer / Safety Functions - Built-in cushioning mechanism that absorbs impact at the stroke end, as required, and also allows easy installation of various valves with functions such as slow return, balance and emergency shutdown.