telescopic hydraulic cylinder multistage single acting for dump truck

A hydraulic cylinder consists of a piston sliding within a hollow tube, moved by the pressure of a liquid. The piston, or rod is usually machined.

Introduction:

The length of a hydraulic cylinder is the total of the stroke, the thickness of the piston, the thickness of bottom and head and the length of the connections. Often this length does not fit in the machine. In that case the piston rod is also used as a piston barrel and a second piston rod is used. These kinds of cylinders are called telescopic hydraulic cylinder. If we call a normal rod cylinder single stage, telescopic cylinders are multistage units of two, three, four, five or more stages. In general telescopic cylinders are much more expensive than normal cylinders. Most telescopic cylinders are single acting (push). Double acting telescopic cylinders must be specially designed and manufactured.

Key features:
1. Designs up to 5000 psi working pressure

2. Total weights of telescopic cylinders can often reach nearly 25,000 pounds

3. Double and single acting

4. High yield carbon or alloy steel outer tubes and stages

5. 001" minimum chrome plated stages

6. Mounting alternatives include trunnion mount, clevis, pineyes, or lugs with spherical bearings

7. Custom options for ports and integrated valves

8. Diverse preferences for seals due to temperature or heavy duty usage

9. Extensive pressure testing

10. Finished cylinder is sandblasted and painted to customer specifications

11. Hydrostatic testing data packets and material test reports available

12. Seal kits available for quick shipment

13. Short manufacturing lead times

Installation method:
The most commonly used mounting options are flange, trunnion, clevis, pin-eye, cross-tube, spherical, and tang. Cylinder mounting is chosen based upon the application’s requirements.

Piston Seals:
Low friction, high load piston seals with outboard wear bands are standard. Loaded lip seals and cast iron rings are optional.

About piston rod:

1. Seiko secret agents, to ensure quality of the piston rod.
2. The product have to go through heat treatment - bore boring - grinding - car processing - black nitriding and many other processes.
3. The company accepted the Valet processing various types and various sizes products, processing and processing more quotes, welcome to consult.

After-sales service:
1. Various operation instructions such as: products inspect and control ,Receiving inspection control ,sampling inspection operation instruction, process quality inspection operation instruction etc
2. Pre-sale service and free consultation service.
3. Quality control service includes pre-acceptance, departure inspection, arrival inspection, PDI delivery inspection.
4. Guarantee period is subjected to warranty instruction (1 year/ 2000 hours whichever comes first).
5. Free after-sale service during the warranty refers to problems caused by quality issues; any non quality problem occurred, we will charge the maintenance fee according to relevant standard.
6. Service Center all over the world for after sales problems.

How to choose:
1. Choice will depend on the operating conditions of the unit. It is necessary to determine the precise physical characteristics and geometry of the installation.
2. The bore, or cylinder diameter will determine the amount of force the piston can apply. Rod characteristics, usually standardized, fastening system, damping and stroke are other important factors.
3. Stroke, in particular, is an essential specification, since it defines the distance the piston travels between its initial and its final position.
4. Additional criteria include the use of presence sensors to indicate the position of the piston, the seals, purge and drain valves, type and temperature of the hydraulic fluid.