KAYABA KZP4 KRP4 Kayaba Gear Pump

KZP4 KRP4 Hydraulic Variable Gear Pump Overview

The KRP4 and KZP4 series hydraulic gear pumps are engineered for high-pressure performance, exceptional reliability, and long service life. Designed with a high-strength aluminum alloy body and precision-engineered gears, these pumps provide consistent hydraulic power for material handling, construction, and agricultural machinery, making them the preferred choice for OEM replacements in brands like Toyota, Komatsu, and Mitsubishi.

Features and Benefits

• Extended Pump Life: Exceptional durability achieved through high-grade wear-resistant materials, specialized surface-treated gears, and the use of high-load DU bushings for superior lubrication.

• Quiet and Smooth Operation: Advanced gear tooth profiles and a precision-machined housing reduce fluid pulsation and mechanical vibration, maintaining low noise levels during high-pressure operation.

• High Efficiency & Energy Saving: Features a pressure-loading design that maintains high volumetric and mechanical efficiency, minimizing internal leakage and heat generation.

• Compact & Modular Design: Standardized ISO and SAE mounting flanges and shaft options allow for easy installation in tight spaces and seamless integration into existing systems.

• Versatile Combinations: Supports tandem (double) or triple pump configurations, providing a cost-effective and flexible solution for multi-circuit hydraulic packages.

Model Codes

Packaging & Delivery

KRP4 and KZP4 gear pumps are typically packaged securely to prevent damage during transit. The packaging includes:

Protective Wrapping: To safeguard the high-precision pump body and shaft from moisture and environmental damage.

Custom Cartons or Crates: Individual reinforced packaging with shock-absorbent inserts for single pumps, and sturdy wooden crates for bulk or tandem pump orders to ensure safe handling.

Documentation: Includes technical data sheets, installation guides, and quality inspection certificates.

Delivery time depends on the specific model, port configurations, and destination but typically ranges from 1 to 4 weeks from the order date.

KRP4/KZP4Hydraulic Variable Vane Pump FAQ

1. What are KRP4 and KZP4 series gear pumps

The KRP4 and KZP4 series are high-pressure, external gear pumps developed by KYB (Kayaba). They are widely used as the primary hydraulic power source in forklifts (especially Toyota and Komatsu), agricultural machinery, and construction equipment due to their high efficiency and rugged design.

2. What is the difference between KRP4 and KZP4

• KRP4: The standard global series used in various industrial and construction machinery.

• KZP4: Specifically optimized for material handling equipment, commonly found as the original pump in Japanese forklift brands like Toyota.
  If you are unsure which one you need, provide your machine brand and model for a compatibility check.

3. What is the working pressure range of KRP4/KZP4 pumps

These pumps are designed for high-pressure applications, typically operating at rated pressures between 20.6 MPa (210 bar) and 24.5 MPa (250 bar). They can handle intermittent peak pressures even higher. Always refer to the specific model code for exact limits.

4. Can KRP4/KZP4 pumps replace other brands

5. What hydraulic oil is suitable for KYB gear pumps

• High-quality mineral-based hydraulic oil (ISO VG32, VG46, or VG68 depending on ambient temperature).

• Anti-wear (AW) hydraulic fluids (ISO HM / DIN HLP).
  Maintaining oil cleanliness (ISO 18/15 or better) is critical for preventing gear wear.

6. What is the typical speed range of KRP4/KZP4 pumps

The recommended operating speed typically ranges from 500 to 3000 rpm, depending on the displacement size. Operating within the specified RPM ensures optimal volumetric efficiency and prevents cavitation.

7. Do you provide OEM or customized services

Yes, we support OEM and customization, including nameplate, packaging, and specific performance requirements. Send us your drawings or specifications for evaluation.

8. How can I get a quotation quickly

Please provide the following details:

• Model or displacement

• Working pressure

• Speed

• Quantity
  We will reply within 12 hours with a competitive quotation.

  
  

Certifications & Quality Assurance

KRP4/KZP4 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%).

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.