Arm cylinder assy JS200 400C818 hydraulic cylinder for Crawler excavator

Product Specification

Arm cylinder assy JS200 400C818 hydraulic cylinder for Crawler excavator

The excavator track tensioning cylinder is a critical component in the undercarriage system of crawler excavators. It is designed to maintain optimal track tension, ensuring smooth operation and stability in various working conditions.

Detailed explanation of the working principle of excavator hydraulic cylinder
The hydraulic cylinder, as the power actuating component of excavators, embodies the perfect combination of fluid mechanics and mechanical transmission in its working principle. A deep understanding of this working principle can help operators and maintenance personnel better use and maintain excavators, while also providing a theoretical basis for fault diagnosis for technicians. The hydraulic system of an excavator is a complex energy conversion and control system, and the hydraulic cylinder is the key link in this system that converts hydraulic energy into mechanical energy.

The Application Basis of Pascal's Principle
The theoretical basis for the operation of hydraulic cylinders is Pascal's principle, which states that in a closed container, the pressure applied to a stationary liquid will be transmitted to all points of the liquid at the same time as an equal value. In the hydraulic system of excavators, the engine drives the hydraulic pump to convert mechanical energy into hydraulic energy, producing high-pressure oil; These pressure oils are distributed to each working cylinder through a control valve group; The oil cylinder converts hydraulic energy back into mechanical energy, pushing the piston rod to move, thereby driving the various working devices of the excavator to move 816. During this process, the force generated by the pressure difference between the two chambers of the oil cylinder overcomes external loads and achieves precise linear motion control.

The output calculation of hydraulic cylinders follows the basic formula of hydrostatics: F=P × A, where F is the output force, P is the working pressure, and A is the effective working area of the piston 48. For double acting hydraulic cylinders, the effective area of the rodless chamber (large chamber) and the rodless chamber (small chamber) is different, so the thrust generated by the two chambers is also different under the same working pressure. Taking the common single piston rod oil cylinder as an example, when the rodless chamber is filled with oil, the output thrust F1=P × π D ²/4; When oil is injected into the rod chamber, the output thrust F2=P × π (D ² - d ²)/4, where D is the cylinder diameter and d is the rod diameter of 8. This asymmetric characteristic needs special consideration in excavator action planning and control strategies.

FAQ:

1. If I only know the excavator model, but can not offer parts No., what should I do ?
If possible, you can send us pictures of old products, nameplate or the size for reference.
2. What is the warranty of the parts after I purchased?
The warranty is 6/12 Months based on the item details.
3. How can I pay the order?
We can receive payment through T/T, Paypal(for small amount),Alibaba trade assurance.
4. When will get the items after I place order?
Once your payment is confirmed, we will arrange the goods within 24 hours; if not in stock , we will inform you before placing the order.
5. How can I do if there is something wrong with the items?
First of all , I have confidence in the quality of our products ,if you really found something wrong ,pls provide pictures for us and we will check. After it is confirmed, pls return to us , we will offer the correct item.
6. What is your main products ?
We are specialized in the excavator spare parts, such as travel motor gearbox/ass’y/parts, swing gearbox/ass’y/motor/parts, hydraulic pump assy/parts and gear parts. If you need other excavator parts, we also can supply as your requirements.