E345D E349 274-2458 Bucket cylinder assy for Crawler excavator Excavator parts

E345D E349 274-2458 Bucket cylinder assy for Crawler excavator Excavator parts

List of spare parts

The basic working process of hydraulic cylinders can be summarized as follows: hydraulic pumps convert mechanical energy into hydraulic energy, and deliver pressure oil to the cylinders through pipelines and control valves; The oil cylinder converts hydraulic energy back into mechanical energy and outputs linear motion; The control valve regulates the flow direction, pressure, and flow rate of the oil, achieving precise control over the movement of the oil cylinder. In this process, the thrust of the hydraulic cylinder depends on the product of the working pressure and the effective area of the piston, while the motion speed depends on the ratio of the flow rate to the effective area of the piston. The controllability of force and speed makes hydraulic systems particularly suitable for engineering machinery applications that require high power output.

In excavators, hydraulic cylinders usually adopt a double acting design, where pressure oil can be introduced on both sides of the piston to achieve bidirectional output. This design has higher control accuracy and wider application flexibility compared to single acting oil cylinders (which only have oil flow on one side and rely on gravity or external force for return). The double acting hydraulic cylinder can achieve complex composite actions by precisely controlling the oil pressure difference between the two chambers, such as simultaneous boom lifting and boom recovery, which is the foundation of efficient operation of excavators.

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.