AP2D28 R55-7 R60-5 R60-6 R60-7 CX55 DH55 DH60 Hydraulic Main Pump Assy For Excavator Parts

AP2D28 R55-7 R60-5 R60-6 R60-7 CX55 DH55 DH60 hydraulic main pump assy for excavator parts

The hydraulic pump of an excavator is the core component of the hydraulic system, providing power to the entire system like a heart. It converts the mechanical energy of the engine into hydraulic energy, drives the hydraulic cylinder and hydraulic motor to work, and thus completes various actions of the excavator.

Product description

Types of hydraulic pumps
Gear pump: With a simple structure, low cost, and strong anti pollution ability, but with large flow pulsation and high noise, it is mostly used in small excavators or auxiliary systems.
Piston pump: with complex structure and high cost, but high working pressure, large flow rate, high efficiency, and high control accuracy, it is widely used in medium and large excavators.

working principle
Oil suction process: The plunger moves backwards, the pump chamber volume increases, forming a vacuum, and the hydraulic oil in the oil tank enters the pump chamber under atmospheric pressure.
Oil pressure process: The plunger moves forward, the pump chamber volume decreases, the hydraulic oil is compressed, the pressure increases, the oil outlet valve is pushed open, and high-pressure oil enters the hydraulic system.

Mainly engaged in excavator hydraulic pumps, final drive, travel motors, swing motors, distribution valves,control valve assy,reduction gearbox,cylinder assy and various hydraulic spare parts.
Excavator hydraulic one-stop service, we can provide Komatsu, Hitachi, Kato, Doosan, Hyundai, Sany, Liugong, Sunward Intelligent, hydraulic pumps of various tonnage models, distribution valves, travel assemblies, travel motors, swing motors and hydraulic spare parts.

If you are interested in any models, please tell us the OEM model code, and we can check the prices for you very soon.

Our advantages

1.Strong part number database.
If you can provide the right model and part number, we can supply the right product.
2.Professional and experienced salesperson.
Our founder has been into this field for more than 7 years, with rich experiences.
3.Strict and complete company rules.
We will try our best to meet customer’s delivery time. Before delivery, we must verify the part number or pictures of products one by one, to make sure that customers can receive high-quality and right-quantity goods.
4.Good management system.
No matter how big or small order, as long as customers place the order, we will provide exporting service free for charge.
5.Good service attitude.
If the customer has any questions about the product, In our receiving and knowing the situation, we will help the customer to solve the problem in the first place. As long as customers’ requirements are reasonable, we will endeavour to make them satisfied.

FAQ

Q. When will get the items after I place order?

A. 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.

Q. If I only know the excavator model, but can not offer parts No., what should I do ?

A. If possible, you can send us pictures of old products, nameplate or the size for reference.

Q. How can you guarantee the quality?

A. We will 100% test the goods before delivery. If you meet with quality problem, we promise to replace goods or return your funds.

Q. How long will it take to delivery to my address?

A. The normal delivery time is 3-5 days, depending on which country you are in.

Q. Do you accept sample order?

A. Yes, sample order can accept.

Q: What's package? Can you give me the package according my requirement?

A. We usually packed by standard exported box or carton. And yes we can pack as per your requirement.

Q: What's brand you can offer in your company?

A. OEM, original, as per your need.