Cylinder Piston Rod
Brands:cat/XCMG/LiuGong
As a key component of excavator engine, the performance and quality of cylinder piston rod have an important impact on the overall operation and efficiency of excavator.
The following is a detailed introduction to the cylinder piston rod:
1. Definition and Function
The cylinder piston rod is the part that connects the piston head to the crankshaft (or, in some designs, other transmission parts), and its main function is to transfer and convert energy.
In the excavator engine, the cylinder piston rod converts the high-temperature and high-pressure gas in the combustion chamber into mechanical energy through reciprocating movement, thus driving various operating devices of the excavator.
One end of the piston rod is connected to the piston head, and the other end is connected to the transmission component (such as the crankshaft), forming a complete power transmission chain.
2. Structure and Composition
The excavator piston rod usually consists of a rod body, a connecting end, a lubrication system, and possibly a wear-resistant, anti-corrosion coating.
The rod body is the main body of the piston rod, which is generally made of materials with high strength and good wear resistance, such as alloy steel.
The connection end is designed according to the connection mode with the piston head and the transmission parts, and the common thread connection and pin connection are used.
The lubrication system is essential for the normal operation of the piston rod, which can effectively reduce friction and wear and extend the service life of the piston rod. Wear-resistant, anti-corrosion coatings further improve the durability and corrosion resistance of the piston rod.
3. Working Principle
The working principle of the cylinder piston rod is based on the working principle of the internal combustion engine.
When the excavator engine is working, the fuel is burned in the combustion chamber to produce high temperature and high pressure gas, which pushes the piston head down.
The piston head is connected to the transmission part through the piston rod, so the movement of the piston head drives the piston rod to reciprocate.
The reciprocating movement of the piston rod is converted into the rotating movement of the transmission components (such as the crankshaft), which drives the various operating devices of the excavator to work.
4. Performance Requirements
The performance requirements of the cylinder piston rod mainly include the following aspects:
Strength and stiffness:
The cylinder piston rod needs to withstand large tension and pressure, so it must have sufficient strength and stiffness to ensure stable operation under harsh conditions.
Wear resistance:
The cylinder piston rod will have friction with the piston head and transmission parts during the reciprocating movement, so it must have good wear resistance to extend the service life.
Corrosion resistance:
The working environment of the excavator is complex and changeable, and the cylinder piston rod may come into contact with various corrosive substances, so it must have a certain corrosion resistance to prevent corrosion damage.
Machining accuracy:
The machining accuracy of the cylinder piston rod directly affects the mating accuracy and sealing performance of the piston head, transmission parts and other parts, so the machining accuracy must be strictly controlled.
5. Material Selection
The material selection of excavator piston rod needs to consider many factors such as working environment, operating conditions, load strength and durability. Common materials include alloy steel (such as 40Cr, 27SiMn, etc.), stainless steel and so on. These materials have the characteristics of high strength, good wear resistance and strong corrosion resistance, and can meet the performance requirements of excavator piston rods.
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Service：
1.Sample service: samples are provided according to customers’ instruction.
2. Customied services: goods can be customized according to customers’demand.
3. One year warranty, some additional products will be supplied next time if they are in bad condition.
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