PVD-1B-10G5hydraulic Charge Pump Suppliers

 PVD-1B-10G5hydraulic Charge Pump Suppliers Overview

The PVD-1B-10G5 Charge Pump is a highly reliable, fixed-displacement external gear pump designed as an auxiliary component for compact hydraulic systems. Its primary function is to provide a stable supply of charge oil, maintain proper inlet pressure for the main pump, and support the lubrication and cooling of essential internal components.

The pump operates on the principle of volumetric hydraulic transmission. As the external gears rotate and mesh, the volume of the sealed working chambers continuously changes, enabling consistent suction and discharge of hydraulic oil. This ensures steady charge pressure and maintains optimal inlet conditions for the main pump.

Specifically engineered to be compatible with PVD-1B axial piston pumps, the charge pump delivers stable oil flow to control circuits, helping to prevent cavitation and inadequate oil supply during prolonged heavy-load operation.

Featuring a compact design, reliable performance, low noise, and easy maintenance, the PVD-1B-10G5 is widely used in 3–6 ton excavators and other small hydraulic machinery. It serves as a direct replacement for original components, effectively reducing maintenance costs and equipment downtime. Its applications span construction machinery, agricultural equipment, and a variety of other hydraulic systems.

Core Features & Advantages

• Strong Versatility & High Compatibility: Specially developed for NACHI PVD-1B series axial piston main pumps, it is perfectly suitable for 3–6 ton small excavators and other small hydraulic equipment. It adopts a standardized mounting interface and special spline shaft design for the G5 version. It is 100% interchangeable with original spare parts, with easy disassembly and assembly, and strong universality in maintenance and replacement.

• Stable Performance & Reliable Operation: Adopting high-quality ductile iron casing and quenched alloy steel gears, it has excellent wear resistance, impact resistance and high temperature resistance, and can adapt to high dust, high vibration and long-term continuous working conditions. The built-in charge relief valve stably controls pilot pressure at 3.0–3.6 MPa, effectively preventing system overpressure and ensuring stable operation under long-term light-medium load.

• Multi-Functional Integration & System Protection: It integrates three core functions: pilot control pressure supply, forced lubrication, and oil replenishment. It shares a common suction port with the main pump circuit, optimizes oil supply efficiency, effectively compensates for oil leakage, prevents cavitation, reduces wear of precision components, and extends the service life of the main pump and hydraulic system.

• Compact Structure & Excellent Adaptability: With integrated and compact design, it is small in size and lightweight, perfectly matching the limited installation space of small hydraulic equipment such as 3–6 ton mini excavators. It can be directly mounted on the main pump without extra space, with high integration and strong adaptability.

• Low Noise & Easy Maintenance: Optimized gear meshing and precision machining lower operating noise to ≤ 68 dB, providing a quieter working environment. Standardized structure makes daily maintenance simple: only regular inspection of oil cleanliness, oil level and seals, pump cleaning and filter replacement are needed. Long service life reaches more than 2200 working hours, effectively reducing maintenance cost and downtime.

  
  

Specifications

Type	Gear Pump
Model	PVD-1B-10G5 Charge Pump
Displacement（cm³）	Other
Shaft Type	Same as the main pump
Function	Completely interchangeable with original pump
Material	Cast/Ductile iron, steel, bronze and others
Processing   technic	Cutting, lathe, machining center, heat treatment, grind, honing, burring and so on

Applications

1. Hydraulic drives with high pressure, heavy load, variability, large displacement, long service life, and reliability.

2. Steel metallurgy and forging machinery

3. Ceramic and refractory material presses

4. Shipping and hydroelectric systems

5. Rubber vulcanization and paper production

6. Petroleum equipment

7. Construction and mobile machinery

8. Railway and tunneling machines

Packaging & Delivery

Charge pumps are typically packaged securely to prevent damage during transit. The packaging includes:

Protective Wrapping: To safeguard the pump from environmental damage.

Custom Crates: For larger, heavier pumps, ensuring safe handling.

Documentation: Includes installation, maintenance instructions, and warranty details.

Delivery time depends on the model, customizations, and location but typically ranges from 2 to 6 weeks from the order date.

PVD-1B-10G5hydraulic Charge Pump Suppliers FAQ 

1.Do I need to install the Charge Pump separately? What should I pay attention to when replacing it?

A: No, it is integrated with the main pump and does not require separate installation. When replacing, ensure that the spline shaft is accurately aligned with the main pump drive shaft, tighten the fixing screws with a torque wrench, keep the contact surface flat and free of impurities, and use a seal ring of the correct size to ensure sealing performance.

2.What preparations are needed before starting the Charge Pump for the first time?

A: Manually fill the charge pump with clean hydraulic oil through the drain port to empty the internal air and avoid dry running damage. Jog start several times to confirm that the rotation direction is clockwise (when viewed from the shaft end), and there is no abnormal sound or oil leakage before formal operation. In addition, manually turn the main shaft to check the self-priming condition of the charge pump.

3.What are the requirements for hydraulic oil when using the Charge Pump?

A: The cleanliness of hydraulic oil must meet the ISO 18/15 standard, and the oil temperature should be kept between 15–65℃. It is recommended to regularly replace hydraulic oil and filters; under harsh working conditions such as mines and high dust, the replacement cycle should be shortened to avoid component wear caused by oil pollution.

4. Can the rotation direction of the  Charge Pump be reversed? What are the consequences of reverse rotation?

A: No, it cannot be reversed; its rotation direction is the same as that of the main pump. Reverse rotation will cause no oil delivery, system pressure loss, internal gear wear, and even damage to the pump body and the main pump. When installing, pay attention to the chamfer direction of the gear rotor to avoid reverse installation.

5. Is the Charge Pump a dedicated accessory? Can it work normally without it?

A: It is a dedicated charge pump for the main pump and cannot be used universally with other models. The  main pump cannot work normally without it, which will cause serious damage to the internal components of the main pump and affect the service life of the entire hydraulic system.

6.Can the displacement of the Charge Pump be replaced arbitrarily?

A: No, it cannot. The standard displacement is 12 cm³/rev; replacing it with other displacements (10/14 cm³/rev) without authorization will lead to insufficient or too high pilot pressure, abnormal lubrication flow, and early wear of the main pump. The displacement should be selected according to the actual working conditions of the equipment.

Certifications & Quality Assurance

Charge pumps are manufactured in compliance with international standards, ensuring high performance and reliability:

ISO 9001: Certified for quality management systems.

CE Certification: Ensures compliance with European safety, health, and environmental protection standards.

RoHS Compliance: Ensures the pump does not contain hazardous materials.

Factory Testing: Every pump is rigorously tested for performance, pressure, and leak integrity before shipping.

FAQ

1.How does the variable displacement work?

The pump's flow is adjusted by changing the angle of an internal swash plate. As the swash plate angle changes, the stroke length of the pistons varies, which in turn changes the volume of fluid displaced per rotation, allowing the flow rate to adapt to the system's needs.

2.What's our advantages?

Factory established in 2005;

With a great deal of production experience;

80+ employees become the professional team;

Constant updated ERP system ensure efficiency of work;

Sophisticated equipment ehanced the accuracy of products;

Professional salesmen provide the greast service;

With a large number of famous customers all over the world;

Great after-sales service;

With the long term cooperation with famous logistics and express company in China,provide the better goods service.

3.What is your payment terms?

Small order/sample order,full payment in advance; Big orders send the first payment 30% before the production,and the balance before shippment.We'll show the photos of the products and packages before delivery.

4.Can you make my own brand on the products?

Of course we can. Just send me your logo  we can make it for you.

5.What is our main export market?

America(40.5%):USA, Canada, Argentina, Brazil

Europe(30.8%):Italy,Germany,England,Holland,Spain,Swiss,Finland,Russia,Poland.

Asia(23.5%):Korea,singapore,India,Turkey,Vietnam,Saudi Arabia,Syria, Israel,Lebanon.

Others(5.8%).