Your Best Manufacturer Of Excavator Bucket Cylinder In China 

Xugong KS is the Your Trusted Excavator Bucket Cylinder Manufacturer in China

  • Great Power Performance For Heavy-Duty Conditions
  • Complete Range of Excavator Bucket Cylinders, Excavator Boom cylinder, Excavator Arm cylinder.
  • Equipped With Top quality seal kit
  • Quality Warranty up to 365 Days
  • Reliable With Attractive Price

XuGong KS Excavator Bucket Cylinder Quality Certification

  • ISO9001
  • KS CE
  • SGS
  • ISO 9001

Xugong KS Top Selling Excavator Bucket Cylinder

31N6-50130,R210-7 R210-3 R210LC-3 Excavator Bucket Cylinder For Hyundai R210LC-7

Aftermarket  Excavator Bucket Cylinder, Wholesale In Stocks For Fast Delivery.

DX300LC DX340 DX380 DX420 Excavator Hydraulic Bucket Cylinders Piston Rod

Top Quality Excavator Hydraulic Bucket Cylinders, Piston Rod.  Affordable Price With Long Warranty.

Excavator Bucket Cylinder EX300-3 Boom Cylinder Arm Cylinder

Strong Resistance Hitachi EX300-3 Excavator Boom Cylinder, Excavator Arm Cylinder, Excavator Bucket Cylinder. Available For Wholesale. Low-Cost Deduction

SH210 SH210A5 SH220-3 SH240 SH200A3 Sumitomo Excavator Hydraulic Bucket Cylinder

High-Quality Sumitomo Excavator Hydraulic Bucket Cylinder. With Wholesale Price On Sale.

EX100 EX120 EX200 EX300 EX400 Excavator Hydraulic Bucket Cylinder For HITACHI

Most Usable Excavator Hydraulic Bucket Cylinder For HITACHI. Ready To Ship. Strong Wooden Case Packed.

SK210-8 SK210-6E Excavator Bucket Cylinder Hydraulic Bucket Cylinder

Brand new Excavator Bucket Cylinder, Hydraulic Boom Cylinder. One-stop Purchasing.

20Y-944-4221 Excavator Bucket Cylinder PC200-8 Arm Assy

Genuine Excavator Bucket Cylinder PC200-8 Excavator Arm Cylinder Assy. In Stocks & On Sales. Safety Arrival

311C 312 Excavator Bucket Cylinder For CAT

Durable  Excavator Bucket Cylinder For CAT. Durable & Long-life With Reasonable Price On Sales.

PC350 Excavator Cylinder Bucket Construction Machinery Parts

Komatsu Excellent Quality PC350 Excavator Cylinder Bucket. Save Your Cost Up to 100% Of The Original

Why XuGong Can Be Your Top Supplier for Excavator Bucket Cylinder ?

XuGong KS offers you a wide choice of high-quality Excavator Bucket Cylinder. These Excavator Bucket Cylinders have been processed and tested. Because all excavator hydraulic cylinders are equipped with high-quality parts including hydraulic cylinder seal kit,  hydraulic bushing, hydraulic piston rod, and so on.  High-Quality Excavator Bucket Cylinders can guarantee you good effectiveness even in extreme conditions. As such, XuGong KS has Excavator Bucket Cylinders that are hard-wearing and long-lasting.

We also offer ODM service for customers who have their own design. All the parts you needed will be always checked and you will always be given professional assistance. XuGong KS has large stocks of Excavator Bucket Cylinder. All these are 100% tested before delivery.

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Other Excavator Parts that XuGong KS Supplied

PC300-7 Aftermarket Excavator Bucket
Komatsu PC300-7 Aftermarket Excavator Bucket
Excellent Komatsu PC300-7 Aftermarket Excavator Bucket. Advantage Quality. In Stocks For Delivery. Long-life Warranty. Attentive Service
KOMATSU, KOBELCO, HITACHI Excavator Track Undercarriage
KOMATSU, KOBELCO, HITACHI Excavator Track Undercarriage
Most Durable Aftermarket KOMATSU, KOBELCO, HITACHI Excavator Track Undercarriage For Best Use
Excavator Bucket Wear Parts Ripper Bucket Tooth
Excavator Bucket Wear Parts Ripper Bucket Tooth
High-Quality Excavator Bucket Wear Parts Ripper Bucket Tooth. Genuine and Sound Price. Safety Packaging.
EC210 EC240 EC290 Excavator Chain Link Track Chain
EC210 EC240 EC290 Excavator Chain Link Track Chain
High-PerformanceEC210 EC240 EC290 Excavator Chain Link Track Chain. In Stocks and On Sale.

XuGong KS Excavator Bucket Cylinder Factory Overview

Where to find the High-Reliable Excavator Bucket Cylinder?


XuGong KS is a well-known distributor of Excavator Bucket Cylinder. We are specialists in distributing high-reliable Excavator Bucket Cylinder.  These Excavator Bucket Cylinders are always up to date, which means we can always provide the product that matches your machines. Here at XuGong KS, we also have powerful technology and high expertise manufacturing experience. Thereby, these Excavator Bucket Cylinders are flawless and high-resistance due to strict quality monitoring.


We have built a famous brand and have achieved customers ‘ trust. We can guarantee you payment safe and safe arrival of your Excavator Bucket Cylinder. Get the maximum life span of Excavator Bucket Cylinder here at XuGong KS. So if you are looking for a proven and tested excellent quality Excavator Bucket Cylinder, buy now at XuGong KS.  We can always satisfy you with our full service, fast delivery, and our proficiency over many years of production. Get a quote now!


Excavator Bucket Cylinder – The Definitive FAQ Guide


Excavator bucket cylinder FAQ Guide consists of all relevant questions and answers on excavator bucket cylinder.

This guide pertains to bucket cylinder costs, bucket cylinder materials, failure causes, maintenance requirements, the working principle, and much more.


1.    How long does the excavator bucket cylinder last?

Excavator bucket cylinders are designed to perform for a long time.

Figure 1. Excavator Bucket Cylinder

However, there will be several things that should be considered when considering the useful life of your excavator’s bucket cylinder.


Like many other machines, the excavator bucket cylinders have certain mechanical parts that fail prematurely if not maintained correctly.

If sediment particles in the hydraulic fluid act as abrasives, they will eventually wear down the cylinder seal and cause leakage.

In general, the lifetime of bucket cylinders varies between 5 to 10 years, but this period varies depending on the type of material, working condition, temperature and pressure range, etc.


2. How do I know if my excavator bucket cylinder is bad?

Several reasons indicate that your excavator bucket cylinder is bad. Some of the reasons are listed below:

Figure 2. Excavator Bucket Cylinder In Bad Shape

If your bucket cylinder is not responding to normal operation and movements of the bucket, it’s time for new seals.


If there is noticeable cracking in the cylinder wall, the cylinder will likely need to be replaced.

A leak might be bad, but it depends on where the leak is. When you shut off the engine to your excavator, look at the fluid levels in the tank and the bucket cylinders.

In case if the fluid level is below the optimum amount, then your bucket cylinder is bad.


3.    How many types of excavator bucket cylinders are there?

Excavator manufacturers have developed a large variety of bucket cylinders to meet the various requirements of the different bucket applications.

Single-acting bucket cylinder:

Single-acting cylinders are just as they sound. They can only be pushed in one direction.

They have only a single embedded port. When the pump is turned on, the piston inside the cylinder moves up and down, causing the rod to move up and down.

Double-acting bucket cylinder

Double-acting cylinders are usually used in reciprocating engines.

To apply power to a piston, the oil is pumped to the end of the cylinder while it pushes out and retracts. This is why the double-acting cylinder uses two ports at both ends.

Telescopic bucket cylinder:

Telescopic cylinders are a series of pistons within one another, like a telescope.

Assembled, they can deliver a longer stroke than any other cylinder design.

This level of stroke is especially useful in many applications, whether it is for pumping liquid, power transmission, or compression.


4.    How do I know what size excavator bucket cylinder to buy?

It would be best to consider a few different factors when deciding on the right excavator bucket cylinder to choose the correct size cylinder.

Figure 3. Different Sizes for Excavator Bucket Cylinder

First, consider the size of your excavator’s hydraulic system. In addition, the size and capacity of the current bucket must be identified, as well as along with its dimensions.


Determine the machine model to install the bucket cylinder and find out how much strength is needed to operate your bucket cylinder properly.

The force produced by the cylinder depends on its length and diameter. A smaller cylinder will create less pressure than a larger cylinder when pressurized to the same percentage.


5.    How do you measure excavator bucket cylinders?

Measuring excavator bucket cylinders is a fairly easy process. You need to have the right tools to perform this function.

A proper excavator bucket cylinder tool kit at hand will help you to achieve this task.

You need to consider two things when measuring cylinder size: the diameter of the cylinder and the stroke length.

It would be best if you also determined the swept volume and bore of your excavator bucket cylinder to select the cylinder appropriately depending on your needs.

The other measurements in assessing the correct size of your excavator bucket cylinder include air/ fuel ratio, engine speed, intake temperature, inlet pressure, compression ratio, and several valves.


6.    How do double-acting excavator bucket cylinders work?

The bucket cylinder draws hydraulic fluid from the reservoir through a valve attached to the cylinder.

The pistons control the two-way movements of double action excavator bucket cylinders.

Figure 4. Double Acting Excavator Bucket Cylinders

As the pistons turn up and down in their cylinders, the flow of hydraulic fluid is transferred to each side of the cylinder.


This is done using a valve that moves in opposing directions depending on which way the output shaft moves.

The downward force created by this operation is what causes your excavator’s arm and bucket, including its dipper stick assembly, to move down.

Double-acting cylinders are typically used to extend a tool such as a bucket to bring it back to its original position.

This is important in applications, like excavator applications, where a tool needs to dig into the ground and pull out of the ground simultaneously.


7.    What is the stroke of the excavator bucket cylinder?

The stroke of the excavator bucket cylinder refers to the maximum travel of the piston in an excavator bucket cylinder. In other words, it’s measured by how much distance between every two extremes.

Usually, it’s calculated by a combination of measuring the distance from the bottom of the piston to the cylinder wall and then subtracting that length from the overall size of the cylinder.

This gives you your working stroke, hardly ever including the piston rod or crankshaft connector linkages.

The stroke of the excavator bucket cylinder also refers to the distance that the bucket will move vertically from its lowest position to its highest position and is usually expressed in either inches or millimeters.


8.    How do you select excavator bucket cylinder seals?

There are several factors you should evaluate before selecting bucket cylinder seals, such as:

Figure 5. Excavator Bucket Cylinder Seals

The cylinder manufacturer, the number of hours (hrs.) on the machine, and the application your equipment will be used for.


Selecting excavator bucket cylinder seals begins with a thorough inspection of the machine.

A visual inspection is the best way to start. Ensure that the inside and outside of the cylinder remain dry, clean, and free from debris with the right type of seals.

Inspect for corrosion on the inside and outside of the cylinder. Also, check for any visible leakage after adding hydraulic fluid to the cylinder.


9.    What is the use of excavator bucket cylinders?

Excavator buckets can be used for a wide range of applications within the construction industry.

They can be used to dig, break ground, load materials into trucks, and move large quantities of material around a project site.

Cylinders are essential components of excavators and play an important role in opening and closing buckets.

The Excavator bucket cylinder is widely used to provide the necessary force to lift the heavier materials located in the bucket.

The Excavator bucket cylinder is used to speed up the excavation process and reduces extra labor costs associated.

Excavator bucket cylinders are commonly used in excavators. Some excavator operators may use it for hoisting purposes as well.


10.  What material are excavator bucket cylinders made of?

Steel, aluminums, brass, nickel alloys. These are the common materials for bucket cylinder construction.

Abrasion resistance is considered one of the major design considerations during the production of excavator cylinders.

The cylinder jacketing material can also range from steel to aluminum or ell as a combination of various materials, such as an aluminum body cylinder with a steel sleeve.

The top and bottom liner was made of aluminum. The material for the valve and seal kit was stainless steel.

For all-over protection, a zinc phosphate finish was spray-applied in the cylinder during manufacture.

Some manufacturers have recently been using CSM and CSG as composite materials in their manufacturing process; therefore, specifying a material type that the manufacturer will use would be more beneficial than the generic metal/metal composites approach.


11.  Why do excavator bucket cylinders fail?

Excavator bucket cylinders fail due to several reasons.

Most common is the incorrect installation of the seal by the equipment manufacturer or end-user and contamination of the fluid.

Over time, the rubber can become deformed by an incorrect installation and cannot make full contact with the cylinder bore.

Hydraulic fluid levels are too low or too high, or one of the pumps has failed, causing hydraulic fluid pressure to be greater inside than outside of the cylinder.

When this happens, hydraulic fluid will leak past the seal allocating that percentage breakdown.

Additionally, if in an excavation situation, dirt and rocks can contaminate the fluid making their way into the cylinder’s sealed portion, causing hydraulic inhibitors to wear out prematurely.


12.  Can excavator bucket cylinders be repaired?

Yes, excavator bucket cylinders can be repaired. It all depends on the damage.

The first thing you need to do to get your bucket cylinder repaired is to determine which part or component of the bucket cylinder is damaged.

Excavator bucket cylinders are subjected to very tough wear and tear.

They are constantly moving up and down, side to side and is used as a bucket. This movement can cause the cylinder seal ring to break, leaving the hydraulic fluid to seep out. This renders the cylinder useless until a repair is made.

Either you can repair it yourself with the right tool kit at hand, or you can get it fixed by a local professional technician.


13.  Why do excavator bucket cylinders leak?

Excavator bucket cylinders are designed with sealing rings to prevent the leakage of hydraulic fluid.

Figure 6. Leaking Excavator Bucket Cylinder

Each time a bucket cylinder is used, there is slight wear on these rings. This wear may cause a poor seal and therefore fluid leaks.


There are many factors involved in the leaky excavator bucket cylinders:

Typically, a bucket cylinder will be surrounded by fluids and debris that contact seals in and around the cylinder. The result is a seal failure from one or more lost or broken seals.

Excavator bucket cylinders can leak due to poor maintenance, changes in the environment, or even old age.


14.  What causes an excavator bucket cylinder to bend?

A bend in an excavator’s bucket cylinder is typically the result of one of two things: bending due to overloading or bending caused by the improper installation of the machine.

Figure 7. Bent Excavator Bucket Cylinder

The main cause of bending an excavator bucket cylinder is violent moves or “ramming” speed in soft soils, dirt contacting the load arm or the bucket.


This forces the cylinder seal to “squeeze” and makes it a cone or bow out, thus putting pressure on the body tubes, which are much weaker than the load arm or bucket.

Most commonly, a hydraulic cylinder is bent when it is exposed to high pressures and high temperatures for a long period. This process is called Heat Bending.


15.  Can you test an excavator bucket cylinder with air?

The answer to this FAQ is yes! The cylinder can be tested without fluid or oil.

The volume of the air is circulated through the cylinder, the cylinder pressure is tested according to the manufacturer’s requirements, and the power supply for the hydraulic system.

It is used to assess if any leakage exists and make sure it is working fine.


16.  Can excavator bucket cylinders get air locked?

Yes, they can get air locked.

There could be several reasons for this to happen.

Suppose the bucket cylinder is cutting a hard material such as rock or working in contaminated soil. In that case, some of the dirt may enter into the cylinder, which will reduce the fluid level, hence reducing the force at which the bucket wants to move.

Another cause could be because when retracting the cylinder back to the machine, one of these seals could have become unseated or damaged during the operation of the digger.


17.  How do you bleed air from an excavator bucket cylinder?

Excavator bucket cylinder hydraulic systems need to be bled regularly.

One solution is to close the hydraulic lines, open the hydraulic lines, allow air and fluid to escape, and then clamp the lines off.

If this does not work, add a dry break relief valve that will unload the air from the cylinder when hydraulic pressure is released.


18.  How do excavator bucket cylinders work?

Cylinders are the heart of every excavator. The working principle is as follows.

These cylinders contain a piston that moves up and down inside a sealed cylinder.

The hydraulic fluid flows in and out of the cylinder through a series of ports to make the piston move up and down, which results in the bucket moving up and down.

Cylinders are connected to the hydraulic system directly behind them or hoses back to an auxiliary hydraulic pump.


19.  How do you control an excavator bucket cylinder stroke?

The excavator bucket cylinder stroke is controlled by a valve that is driven by the hydraulic pump. The valve spins at high speed to open and close, allowing the cylinder to move.

Figure 8. Excavator Bucket Cylinder Stroke

Known as an “L” piece and a pressure regulator, this valve reduces the hydraulic fluid pressure and regulates how much fluid is allowed into the cylinder.


The hydraulic fluid section of a bucket directly controls the movement of the reach rod, a smaller area of the hydraulics responsible for managing movement in and out of the scoop bucket below it.

20.  How much excavator bucket cylinder costs?

The cost of an excavator bucket cylinder varies depending on several factors.

These factors include material used in the manufacturing of bucket cylinder, the weight of the excavator bucket cylinder, warranty associated, compatibility with machine model etc.

The cost of an excavator bucket cylinder lies in the range of $550 to $1200 per piece.

The price of an excavator bucket cylinder ranging from 50, 100, 200, 300 tons lies in the range of $300 to $650 per piece.

The cost of an excavator bucket cylinder varies as the quality of an excavator bucket cylinder increases and associated lifetime.


21.  Do you need to bleed excavator bucket cylinders?

Excavator bucket cylinders must be bled to prevent air from remaining in the system.

The high pressure of the cylinder will force the air up into the control valve, possibly causing an explosion.

To keep your excavator operating at the highest level possible, you will want to make sure that you are regularly checking and removing air from your cylinders.

If the pressure gets too high, especially when the machine has been idle (not used for a long time), bleeding is essential.

The correct pressure varies according to the temperature.

As a rule of thumb, most service manuals recommend that the pressure should be within +/-15% of the value stated in your Service Schedule.


22.  What is column load in excavator bucket cylinders?

Excavator Bucket Cylinder is the column load for excavator bucket cylinders. The higher the column load, the easier it’ll bang. The lower the column load, the slower it’ll knock.

The column load in excavator bucket cylinders is the percentage of cylinder pressure over the hydraulic fluid pressure.

In general, the higher the operating pressure is, the larger and heavier oil flow quantity needs to focus on the cylinder to keep the stability of movement.


23.  Can I import an Excavator bucket cylinder from China?

Yes, you can import an excavator bucket cylinder from china.

Importing excavator bucket cylinder from china help saves extra cost because these manufacturers provide high-quality parts at a low price.

The lifetime associated with these parts is comparatively longer.

They deliver directly on your doorstep without hesitation of custom duties.

You can order as much as your need, and they do not limit the quantity of order.

Chinese excavator bucket cylinder supplier provides you with custom specifications which you can change particularly to your demands.


24.  What is the maintenance requirement of excavator bucket cylinders?

The maintenance of excavator bucket cylinders mainly consists of checking the fluid leakage and replacing the damaged seal kit.

The excavator bucket cylinder is a hydraulic system including various hydraulic components. When using or disassembling the excavator bucket cylinder, please do a good job cleaning the dirt and sand inside the excavator bucket cylinder.

Excavator bucket cylinders are subjected to wear and tear of continuous use, so they need to be replaced periodically.

Excavator bucket cylinders are a critical part of any construction site or operation.

It takes a certain level of technical understanding to work with them and invest properly in keeping them in good working condition.


25.  How do you calculate the force of an excavator bucket cylinder?

The force of a cylinder is based on the bore of the cylinder, the stroke of cylinders on a machine, and the type of cylinders.

To calculate force using the formula given below will surely help.

F = Force in lb.

P = Pressure in psi.

A = Area in in2

This force represents how hydraulic fluid pressurizes bucket cylinder piston and the amount produced as a result.

Smaller cylinders produce less force used in lifting soft materials, and the larger cylinder has a larger force used in the transportation of hard materials.


26.  Can an excavator bucket cylinder explode?

The answer is yes, but it’s not a frequent occurrence.

Most excavator bucket cylinders explode because of a worn OD back seal on the elbow; this is usually caused by over-tightening the elbow cap bolt.


Other causes include operators overfilling the hydraulic system with fluid, causing a hydraulic fluid leak and a hydraulic fluid overflow condition.

Figure 9. Excavator Bucket Cylinder Exploding

An excavator bucket cylinder is normally filled with hydraulic fluid. It can become pressurized to around 2,000 psi by the engine-driven hydraulic pump.

If the pressure becomes too high, some of the hydraulic fluid can be forced out via the return valve at the bottom of the cylinder.

If there has been a buildup of foreign matter (such as chips or dirt) in the fluid, this can cause an uncontrolled flow of fluid from the tiny holes resulting in the explosion of the bucket cylinder.

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