A8VO160 Hydraulic Charge Pump

 A8VO160 Charge  Pump  Overview

Core Features & Advantages

• Integrated Design & High Reliability:Integrated with the A8VO160 main pump, coaxial drive ensures high transmission efficiency and compact structure, perfectly fitting the limited installation space of medium-heavy equipment. The built-in pilot relief valve stably maintains pilot pressure at 5.0 MPa, preventing system overpressure damage; an optional pressure reducing valve meets multi-circuit control needs. Quenched alloy steel gears and ductile iron casing offer excellent wear and impact resistance, ensuring long service life and low failure rates under heavy loads and high-vibration conditions.
• Multi-Functional Integration & System Protection:It integrates three core functions: acting as the pilot control pressure source (for multi-way valves, regulators, travel/rotary motors and other components), providing forced lubrication for main pump internal parts (bearings, slippers, valve plates), and replenishing oil to prevent cavitation. As an indispensable core component, its integrated design optimizes circuit layout, reducing pipeline connections and potential leakage points.
• Strong Compatibility & Easy Maintenance:100% interchangeable with the original Rexroth A8VO160 main pump, widely compatible with mainstream medium-heavy machinery models like Caterpillar E330B/330BL, Doosan DH258/DH300, Sany 265/305, XCMG 260/300, and Lonking LG6250. Standardized design ensures convenient disassembly and assembly; daily maintenance only requires checking oil cleanliness, level and seal integrity, reducing downtime and maintenance costs. It can be quickly replaced in case of failure to ensure continuous equipment operation.

Specifications

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.

A8VO160 Charge Pump FAQ

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

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?

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?

• Oil Type: Anti-wear hydraulic oil (AW grade) meeting ISO 11158 standards is required.

• Viscosity: ISO VG 46 or VG 68 is recommended for most operating conditions.

• Filtration: Oil cleanliness of ISO 4406 18/15 or better is essential to prevent premature wear and damage to precision components.

• Temperature: Operating oil temperature should be kept between 15–65°C for optimal performance.

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

• No oil suction or pressure build-up: The gear meshing and internal flow passages are designed for one-way rotation, so the pump will fail to deliver oil, causing main pump cavitation.

• Severe internal damage: Reversed oil flow leads to insufficient lubrication and increased friction, which can quickly damage gears, bearings, and the pump body.

• System failure: Without proper charge pressure, the main pump will lose control, leading to equipment malfunction or even complete shutdown.

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

• It cannot build the required low-pressure charge oil to prevent cavitation, leading to severe damage to internal components.

• There will be no pilot control pressure to operate the main pump regulator, travel motors, and control valves.

• Without forced lubrication and leakage compensation, the main pump will quickly overheat and fail under load.

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

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.Are you a manufacture for the vane pump or a wholesale ?

We are a manufacture for vane pumps。.We are located in Changzhou City, Jiangsu Province, China.Welcome to visit us.

3.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.

4.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.

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

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

6.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%).

All hydraulic pumps produced by Green Hydraulic have undergone compliance testing, ensuring their quality and reliability.

To meet the diverse needs of different industries, the green hydraulic offer customization options, such as specialized seals, materials, and pump configurations. These facilities often work closely with engineering teams to develop tailored solutions for specific applications, from high-pressure systems to low-flow, high-efficiency pumps.

Each pump undergoes a rigorous quality control process, where pressure tests and performance assessments are conducted to ensure that the pumps meet the required standards for flow rate, pressure capacity, and durability.