The Best Excavator Alternator Supplier in China

Xugong KS Gives You The Most Smooth-Operating Excavator Alternator in the Market.

  • Charge Your Battery Fast
  • High-Tech Regulating Voltage and Supplying Power
  • Aftermarket and Genuine from The Best Brands
  • Secure Delivery with Quality Warranty
  • OEM and ISO Certified

XuGong KS Excavator Alternator Quality Certification

  • ISO9001
  • KS CE
  • SGS
  • ISO 9001

Xugong KS Top Sales Excavator Alternator

Excavator Alternator for Hyundai

R220-5 6BT5.9 3935531W 3935531 Alternator. High-pressured and can withstand tensile forces.

Excavator Alternator for Hitachi

Powerful Xugong KS excavator alternator for your EX120 excavators. Reliable and long-lasting.

Excavator Alternator for Sany

Excellent excavator alternator for your ME049320 Alternator replacement. Securely and fast delivery.

Diesel Excavator Alternator

Fuel-efficient and low-cost excavator alternator for your Hyundai excavators.

Excavator Alternator for Cat Mini

304E 305E 60 Amp 102211-5. Fast delivery available with quality warranty.

Excavator Alternator for Komatsu

Durable and high-speed excavator alternator for your Komatsu excavators.

Excavator Alternator for Doosan

24V S225LC for your Doosan excavators. OEM and ISO certified.

Wholesale Excavator Alternator

Xugong KS high performance excavator alternator on wholesale price.

Excavator Alternator for Volvo

Superior-quality made for EC210 EC240 EC290 excavators.

Why Should You Order Xugong KS Excavator Alternator?

At Xugong KS excavator alternator supplier, we strive to offer the best services and have an extensive range of superior-quality excavator alternator in China.

We only provide high-performance and high-capacity excavator alternators for your machines to regulate high voltage and supply huge amounts of power. Xugong KS can guarantee long-wear life and durability even in intense job sites. Check our Xugong KS excavator alternator supplier now!

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Xugong KS Excavator Alternator Manufacturer Overview

High Performance Xugong KS Excavator Alternators

Xugong KS excavator alternator supplier delivers alternator solutions to meet the needs of every customer in a vast array of industries including heavy industrial, mining, manufacturing, high-tech, medical, military, precious metals, natural resource extraction, processing equipment, and many more.

Xugong KS excavator alternator supplier offers many OEM and aftermarket excavator alternator for heavy equipment like Cummins, Komatsu, Cat and more. We are the biggest heavy equipment replacement parts dealer in China. Order Xugong KS excavator alternator now!


High-Speed Generating Currents for Your Engine

By the bearing and the end of the alternator stator and rotor connection, the rotor can rotate in the stator to do the movement of magnetic lines. This results in induction potential through the terminal leads, connected to the circuit to product a current.

Xugong KS excavator alternator has been developed over many years. This is the result of all of those years. A high-powered and high-speed excavator alternator for your heavy-duty equipment. Order one now!


Fast Solutions with Xugong KS Excavator Alternator

Xugong KS excavator alternator supplier consistently source new and improved product lines, increasing our inventory to satisfy demand. We enjoy the challenge of providing solutions to the most difficult excavator alternator applications.

With our material knowledge, technological capabilities and applications experience, Xugong KS excavator alternator supplier is able to offer customers both customized and complete excavator alternators of the highest quality. Get your excavator alternators now!

You are just a click away from getting the highest quality of excavator alternators in the market. Order from Xugong KS excavator alternator suppliers now.


Get Your Xugong KS Excavator Alternator Today!

With turnaround time as same day, our custom machined products and our top engineers meet the highest quality standards. Production and distribution systems are fast and efficient, keeping manufacturing and lead times to a minimum. Request a quote for our excavator alternator and we will deliver right away.

Xugong KS excavator alternator can be shipped through popular couriers like TNT, FedEx and many more.  We can guarantee you we can distribute your excavator alternator orders anytime and anywhere via air or sea.

Source from the best, Xugong KS excavator alternator supplier! The best here in China to your construction doorstep!


Excavator Alternator – The Definitive FAQ Guide


The Excavator alternator FAQ guide is a guide that gives the necessary information for those who want to buy an alternator for their construction equipment.

An excavator alternator is a device that converts mechanical energy into electrical energy. The internal workings of the excavator alternator operate much like your car.

This guide provides information on excavator alternator, components of excavator alternator, pulley, bearing, housing, voltage regulator and much more. Learn more about this component below.


1. What is an excavator alternator?


An excavator alternator is one of the core components that make up an excavator. The excavator alternator is a type of alternator used to charge a battery by converting the engine’s mechanical energy to electrical energy.

An external power source is not required as the engine itself is used as a generator. An alternator rotates a driven shaft while a diode rectifier, installed parallel with the engine, rectifies the AC to DC.

Depending upon the circumstances, this AC can be used directly to charge batteries or hydraulic power pumps, tool chargers and other equipment. Operators use an excavator alternator to save on generator fuel consumption and noise, increase hydraulic flow and pressure while improving overall efficiency.


2. What are the applications of an excavator alternator?


There are several applications of an excavator alternator. Some of the main applications are as follows:

They are used to power all of the tools and accessories on excavators. These include bulldozers, wheel loaders, backhoe loaders, tractors, mounted power augers and hydraulic cranes.

Excavators are built with equipment such as an engine, starter and also different items such as a battery. The excavator alternator is part of the system that acts as the battery for the operator to get started.

It is used in place of batteries to reduce downtime and increase the efficiency of your excavator. Excavator alternator can be used in most industries such as agriculture, mining, and construction.


3. What is the role of a brush holder in an excavator alternator?


The brush holder is the most indispensable part of the excavator alternator, which works together with the brushes to convert the electrical energy.

The brush holder has the following functions:

  • Cooling the exciter field coil, protect the exciter field coil surface from erosion by foreign material,
  • Rotating with the exciter’s rotation to ensure that there is debris in the trash box can be evenly distributed in a vacuum,
  • We ensure that sufficient rotation speed of the rotor core when starting to avoid damage to the stator.

The rotors of the excavator alternator carry out brushes so that they will be able to develop electric channels of the machine.

The brush holder is an integral part of an excavator alternator mainly responsible for the contact between the brushes and the armature. This role needs to be placed in a way that does not affect the work of other crucial components.


4. What is the role of the rectifier in an excavator alternator?


The rectifier is a full-wave voltage converter, which takes the DC from the battery and converts it to AC for output from the alternator. It provides a safer, more powerful, fully regulated output of DC outlet power from the alternator.

Excavator alternators have a rectifier mounted inside the unit for this purpose. A rectifier can also be referred to as an inverter.

The rectifier works on the principle of half-wave and full-wave rectification. The rectifier uses frequency conversion and produces a pulsating current with lower voltage stored in batteries or capacitors.

It converts the current from a three-phase system to a single-phase system. To do this, it uses a four-side electrode assembly that has a slope of 45º on each side. Each of these electrodes comprises a series of 12 diodes that flip back and forth to give out DC power from an AC.


5. What is the role of the rear bracket in an excavator alternator?


The rear bracket plays an essential role in the alternator of the construction equipment, such as the excavator. An Excavator alternator consists of a three-phase squirrel cage rotor, stationary stator and exciter magnet.

Its electrical machine part can be moved by the shunt and field pulley under the action of the engine and then generate electricity to rotate the magnet of a rotary encoder which transmits it to the control circuit. The control circuit transmits current to the busbar.

The rear bracket of an excavator alternator is used to hold all parts of the external housing assembly together. It also supports the wiring harness so that it can be unobstructed by the rotating field assembly. If it is faulty, it will cause a short circuit or even a fire accident.


6. What is the role of the stator in an excavator alternator?


The stator is an essential component in an excavator alternator. The reduction of voltage generated by the rotor to a functional level to charge the battery at a designated rate is made within this device.

The stator is responsible for generating alternating current. The coils of wire in the stator are powered by brushes that ride along grooves on the inner surface of the rotor.

When these brushes pass over the metal contacts on the end of springs inside of the stator, they complete an electrical circuit that induces a strong alternating magnetic field in the revolving coil.

The is done to provide the electrical field for the magnetic-field induction. It generates alternating current (A.C.) by electromagnetic induction and then sends it into the rotor to be changed into mechanical energy used to start and run the engine.


7. What is the role of the rotor in an excavator alternator?


The rotor is the rotating part made up of metal materials. It carries excellent magnets which are capable of producing magnetic fields that are used in the excitation process.

Rotor excites the coils inside the alternator to fluctuate current. A rotor is an element, which converts mechanical energy to electrical energy.

While in many small machines, the element consists of a coil of wire with the magnetic field produced by the current flowing through it, larger machines have electromagnets with permanent magnets to augment the magnetic field produced by the current. As the rotor spins, the current passes through the coils to produce a voltage across the terminals of the unit.


8. What is the role of the front bracket in an excavator alternator?


The front bracket is an essential element that plays an essential role in your excavator alternator.

The front bracket connects the alternator to the rear part of the engine. It is usually made of steel and reinforced with welding to be durable enough to resist the high pressure of the engine’s driving the alternator.

A front bracket, on the other hand, is used to secure things together and maintain alignment. A bracket on an excavator is required to keep the weight of the engine from crushing the Diffs.

It allows you to adjust the alternator angle and provides a mounting point for other accessories. The front bracket is the first component that one sees after opening the front cover. This bracket also helps absorb vibration while the machine is in operation.


9. What is the role of a pulley in an excavator alternator?


The primary function of the pulley in an excavator alternator is to attain smooth running of the belt. The pulley can be termed as the wheel which rotates along with the generator (engine) wheel.

The turbine wheel coupled with an alternator wheel generates current for powering electrical equipment in the excavator.

The pulley is a simple yet essential component for all types of alternators. It allows the generator shaft to be rotated to start the engine, thus creating electricity.

Pulleys come in different sizes and can sometimes be replaced separately by replacing one without replacing the entire alternator itself. Pulley can also be used to adjust the speed of engine rotation.


10. What is the role of bearing in an excavator



The bearing is mainly used for protecting the gear or spindle shaft against colliding. It is one of the essential components of an alternator. If it is broken, then it will cause the failure of the alternator itself. The bearing can support the shaft to reduce vibration.

The primary function of the bearing is to keep the rotor fully rotate, reduce friction loss, increase alternator durability.

The bearings are housed in housing attached to the main shaft of the alternator. The main shaft rotates within these bearings, and it relies on them to keep the shaft centered in the housing so it can spin freely.

There are two sets of bearings, one at each end of the housing. The bearings should never need replacing when well-maintained, but if a bearing starts to fail, a bigger problem is usually imminent. An oil leak from an alternator bearing turns into a huge problem very quickly.


11. What is the role of housing in an excavator alternator?


Housing is one of the most significant components of an alternator. It protects each alternator element from the damage caused by the water, dust, and other harmful substances present in its surroundings. It secures the core parts of the alternator utilizing fixing screws, etc.

The components are enclosed in a fully welded alloy steel shell with pneumatic forced cooling. Housing design varies depending on the machine application and drive mechanism required by the contractor.

The radiator works as a heat sink, transferring the heat away from the motor and into surrounding air or water.

When you remove the housing, you must be careful not to damage the alternator’s core parts and pay attention to grounding so as not to cause spark and explosion hazards.


12. What is the role of voltage regulator in an excavator alternator?


The purpose of a voltage regulator in an excavator alternator is to maintain the constant output voltage. The Excavator alternator has a secondary backlash winding under the auxiliary winding to perform as an adjustable regulation transformer.

It provides a more consistent power supply for electrical devices installed on or near the machines, reducing the risk of overload. Voltage regulators reduce the voltage output to what is needed by the other electrical devices, which reduces energy loss and heat output.

The voltage regulator guarantees the voltage, improves the alternator’s efficiency to ensure better performance of the machine. Voltage regulation is used to prevent a current surge at stop work and no-load situations, resulting in a smooth operating engine.


13. What is the role of end cover in an excavator alternator?


End cover is a necessary component of the alternator, which insulates and preventing foreign elements such as dust or water from entering the alternator.

The end cover is usually made of steel, which is welded with the surface of the case to ensure it can effectively prevent water or dust from entering the interior of the alternator under the particular condition of the working environment.

The Excavator Alternator End Cover prevents the electromagnetic field of the rotor from reaching the wrong places.

That would create a short circuit and negatively impact other parts such as solenoid coils and wiring harnesses. Also, switch contacts would have interfered, and other consequence issues would be caused, e.g. starter not working correctly.


14. What is the role of a slip ring in an excavator alternator?


A slip ring, also known as a revolving ring or rotating ring, is a device that allows an electrical conductor or optical fibre to pass through it while providing a continuous path around the circumference.

The insulating section is usually made of enamelled copper. It has its rings connected to the terminal and the shaft, and its rings are linked into a closed circuit.

The slip ring is one of the essential parts of an alternator. Its function is to act as an electrical contact allowing power to flow from the stationary armature of the alternator to the rotating armature. Slip rings are located on the outer end of both windings.

A slip ring is a device that allows current to pass around an electrical circuit in only one direction.

It prevents current from leaking out of the circuit, which could be caused by contact with other objects. Slip rings are used to create circuits for things like magnetic cranes, excavators, and industrial machinery.


15. What is the role of a fan in an excavator alternator?


The fan installed on the outside of the alternator is there to help keep the alternator cool. If you’ve ever seen an alternator on an excavator, it has one fan on it.

A larger vehicle will have two. Small machines don’t need them because they are not producing as much charge as others.

A belt connects the fan with a pulley that is connected. The purpose of the fan is to cool down the engine when it is operating.

Keeping the engine clean, especially if you are working in a dusty area, will maintain an optimum temperature for continuous operation.

There are different sizes of fans available you can choose any one depending on your needs and budget.


16. How much does the excavator alternator cost?


The cost of an excavator alternator varies and depends on several factors. Some of the significant factors are as follows:

  • The size of your excavator alternator and design specifications
  • Materials with which it is made of
  • How long will it last or any warranty associated?
  • The features associated with your excavator alternator

These factors significantly impact the cost of your excavator alternator. The price of an excavator alternator with a warranty of 6 months and having a voltage of 24 v lies in the range of $70 to $80 per piece.

The cost of an excavator alternator having a warranty of 3 months with a total voltage supply of 24 v lies in the range of $60 to $70 per piece.

If you wish to purchase an excavator alternator with extended functions, choose a higher-price excavator alternator because it lasts longer and offers extra efficiency.


17. What is the life associated with an excavator alternator?


The life of an alternator depends on many factors, including but not limited to engine hours, load levels, temperature, hydrogen sulphide exposure, oil, voltage regulation settings, over/under voting, tachometer hours, tacho set-up and tacho error correction.

The life of an excavator alternator typically lies in the range of 10,000 and 15,000 hours for most machines under normal working conditions.

The life of an excavator alternator is also dependent upon the exercise frequency of the solution. Frequently, heavy construction will shorten the life span for this particular piece.

The life of an excavator alternator is usually directly related to battery and starter capacity. Rough use and maintenance issues also play a factor. Suppose you have a good battery that is working efficiently. In that case, the starter works correctly, the engine is running well, and everything is adjusted correctly, then you should expect longer life of your excavator alternator.


18. What are the design specifications of an excavator alternator?


The design specifications of your excavator alternator vary depending on the model and the manufacturer. Before selecting a good one that is fit for your excavator and provides you with extra efficiency, consider the design specifications.

Sr. No. Product Name Specifications
1 Excavator Alternator Voltage 12
2 Excavator Alternator Ampere 50
3 Excavator Alternator Rotation CW
4 Excavator Alternator Pulley class V1
5 Excavator Alternator Feature Top rated
6 Excavator Alternator Item Weight ‎8 pounds
7 Excavator Alternator Product Dimensions ‎8.23 x 7.28 x 7.09 inches
8 Excavator Alternator Model ‎Internal Regulator/Internal Fan


If you don’t follow the exact selection criteria, you will end up selecting a lousy excavator alternator, which will increase your downtime.


19. What are the issues associated with an excavator alternator?


Excavator alternators are well suited for diesel-powered excavators, and they are designed to produce significant output power at low speed.

However, if their performance is not cared for properly, several issues may affect their functionality.

It’s often seen that when the exciter field bushings wear out in an alternator, the armature gets damaged.

Though the damage may not be visible outwardly, there can be pretty drastic changes in the sound produced by the alternator after the bushings wear out, which in turn can cause premature failure of the entire unit.

The belt that drives the alternator on the engine tends to fail. The belt attaches to a drive pulley and then connects to the alternator pulley, so as the belt goes around, it spins the alternator.

If you have slack in your alternator belt, it can cause wear and tear on the components and slow down your machine’s production process. A bad battery can also affect your machines.


20. What causes the failure of an excavator alternator?


Excavator alternator problems can occur. The main reason for failure is the failure of any one of the three components: starter, process and engine. If the starter is faulty, the machine will not start. A bad battery will cause a faulty starter to fail.

For instance, if the battery is terrible due to excessive heat, say in the engine compartment, it will not hold a charge or deliver power to the starter motor drive system. The result will be an alternator that fails.

The biggest issue with keeping the machine working is the starting ability. This means that an alternator must start the engine and keep it running during work time. Having a lousy alternator means having to replace the entire unit, which can be very expensive.


21. What are the maintenance requirements of an excavator alternator?


The maintenance requirements for an excavator alternator vary depending on the type and application of the machine.

However, to ensure that the excavator equipment will perform as expected each time used, a professional should perform regular inspections and ensure that all necessary services and parts are kept on hand.

The maintenance requirements of an excavator alternator include cleaning and adjusting primary and secondary pulleys, replacing brushes, inspecting the bearing, and checking the tension of the belt.

Operators should check the coolant level, change it if necessary and check for objects in the radiator airflow. Check oil level and add fresh oil if needed.


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