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KYB87 Hydraulic Charge Pump
Green Hydraulic
Yes
ISO9001，CE
1. Industrial Hydraulic Systems 2. Mobile Equipment (Industrial Vehicles) 3. Construction and Engineering Machinery 4. Metallurgy Industry
Same as the main pump
1 set
Product Description
The pump operates using a precision external gear mechanism, where the meshing gears create a continuous suction and discharge cycle, delivering consistent charge flow and maintaining favorable operating conditions for the main hydraulic pump.
The KAYABA KYB87 Hydraulic Charge Pump is a high-reliability auxiliary pump designed for hydraulic systems requiring stable low-pressure oil supply. It is engineered to provide continuous lubrication, cooling, and proper inlet pressure to the main pump, ensuring smooth operation and enhanced system efficiency.
Designed for compatibility with a wide range of hydraulic equipment, the KYB87 is ideal for construction machinery, agricultural machinery, and industrial hydraulic systems. Its compact structure, stable performance, and low noise make it easy to install and maintain.
As a reliable replacement or upgrade solution, the KAYABA KYB87 helps reduce maintenance costs and downtime while ensuring long-term performance for hydraulic systems operating under continuous or heavy-load conditions in China’s demanding market.
Low Noise & High Efficiency：Optimized gear design ensures smooth operation, low noise, and high volumetric efficiency.
Improve Main Pump Stability：Provides stable charge oil flow to maintain proper lubrication and cooling of the main pump.
Extend Hydraulic System Service Life：Reliable charge oil supply reduces wear and helps extend the lifespan of the hydraulic system.
Multiple Control Options：Compatible with different hydraulic control systems to meet various application requirements.
The KAYABA KYB87 hydraulic charge pump circuit is a critical auxiliary system designed to support the main hydraulic pump by providing a stable low-pressure oil supply. Its primary purpose is to maintain proper inlet pressure, ensure continuous lubrication of internal components, and circulate oil for cooling, enhancing overall hydraulic system reliability and performance.
Engineered for a variety of hydraulic equipment, this charge pump circuit ensures smooth operation under both normal and heavy-load conditions, preventing cavitation, oil starvation, and unnecessary wear on the main pump.
Specifications
Type | Gear Pump |
Model | KYB87 hydraulic 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
Hydraulic drives with high pressure, heavy load, variability, large displacement, long service life, and reliability.
Steel metallurgy and forging machinery
Ceramic and refractory material presses
Shipping and hydroelectric systems
Rubber vulcanization and paper production
Petroleum equipment
Construction and mobile machinery
Railway and tunneling machines
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.
1.What is the primary function of the KYB87 charge pump?
The KYB87 provides a continuous low-pressure oil supply to the main hydraulic pump, ensuring proper inlet pressure, lubrication, and cooling of internal components.
2.What type of pump is the KYB87?
It is a fixed-displacement external gear pump, designed for auxiliary hydraulic circuits in small to medium hydraulic systems.
3.Which systems or machines is it compatible with?
The KYB87 is widely used in construction machinery, agricultural equipment, industrial hydraulic units, and other systems requiring a stable charge oil supply.
4.How does the KYB87 prevent cavitation in the main pump?
By maintaining consistent inlet pressure, the KYB87 ensures the main pump receives adequate oil flow, reducing the risk of air entry and cavitation.
5.What maintenance is recommended for the KYB87?
Regularly check oil levels and cleanliness, replace filters as needed, inspect relief valve settings, and monitor for abnormal noise or vibration.
6.Can the KYB87 be used as a direct replacement for original charge pumps?
Yes, the KYB87 is designed to be compatible with many original pump installations, reducing maintenance costs and downtime.
7.What are the advantages of using the KYB87?
It provides stable oil supply, protects the main pump, ensures smooth hydraulic operation, reduces wear, and operates with low noise.
8.Is the KYB87 suitable for heavy-load or continuous operation?
Yes, the KYB87 is designed for reliable performance under prolonged heavy-load conditions, maintaining lubrication, cooling, and stable system pressure.
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.
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%).
The Green hydraulic pump manufacturing facility is a specialized industrial plant that focuses on producing hydraulic pumps and related components. These factories are equipped with advanced machinery and technology to fabricate high-quality pumps designed for a wide range of applications, from heavy equipment and machinery to automotive and industrial systems.
The production process typically involves precision engineering, where raw materials like metals and alloys are processed into pump components such as gears, pistons, cylinders, and seals. These parts are then assembled into fully functional hydraulic pumps, which are tested for performance and quality control to ensure reliability, efficiency, and durability under various working conditions.
Green Hydraulic's manufacturing facilities for hydraulic pumps maintain stringent quality standards, often adhering to international certifications, to meet the expectations of customers in industries such as construction, agriculture, automotive, and manufacturing.
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.
