IPH Series Gear Pump | Nachi
Enhance Performance with Nachi IPH Series Gear Pump
With a wide range of displacement options, these IPH pumps offer outstanding performance, reliability, and durability in a compact, lightweight package. The IPH Series Gear Pump utilizes Nachi’s proprietary gear tooth profile and highly precise manufacturing techniques to deliver unparalleled efficiency and smooth, quiet operation. Thanks to their advanced design and robust construction, the Nachi IPH Series Gear Pump is the ideal choice for a broad range of applications, from machine tools and construction equipment to automated production lines and more. Enhance your system’s performance today with the Nachi IPH Series Gear Pump.
- Customized Solutions
- High Efficiency
- Reasonable Pricing
- Technical Support and Service
The Nachi IPH Series Gear Pump is a robust and efficient solution in hydraulic systems.

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Description of IPH Series Gear Pump: Information and Specifications
The IPH Series Gear Pump is a high-performance machine that has specifications that are very good. It is made of the latest technology thus making this pump transfer oils and fluids efficiently with great precision. The IPH Series Gear Pump is capable of handling extremely demanding applications since it has maximum pressure of 21 MPa and maximum speed of 3600 RPM. The pump also has a tough makeup with cast iron body and hardened steel gears to guarantee durability and long-lastingness. This design also makes it easy for maintenance as it contains interchangeable internal components which can be replaced quickly and easily. The IHP series gear pump is a dependable and effective choice for all industrial fluid transfer activities.


Key Features of the IPH Gear Pump
- High Efficiency: The IPH Series uses a patented axial and radial pressure loading system, capable of generating pressures up to 30MPa (306kgf/cm²).
- Durability: Known for outstanding durability and a long lifespan.
- Quiet Operation: The use of a modified involute short-tooth gear reduces pulsation and noise.
- Maintenance: Simple structure design facilitates easy maintenance and inspection.
- Capacity Range: 3.6 to 125.9 cm³/rev
- Rated Voltage: 25 MPa (255 kgf/cm²)
- Maximum Operating Pressure: 30 MPa (306 kgf/cm²)
- Revolution Speed:
- Minimum: 300 – 600 min⁻¹ (varies by model)
- Maximum: 2000 min⁻¹
- Weight: Varies from 2.4 kg to 43.0 kg, depending on the specific model and configuration.
The IPH Series Gear Pump boasts a durable build and superior efficiency, making it the perfect choice for hydraulic applications requiring reliable and silent performance. For in-depth information, feel free to inquire!
IPH Series Gear Pump Specifications
Model No. | Capacity (cm3/rev) | Rated Pressure (MPa) | Maximum Operating Pressure (MPa {kgf/cm2}) | Minimum Speed (min⁻¹) | Maximum Speed (min⁻¹) | Weight (kg) |
---|---|---|---|---|---|---|
IPH-2A(B)-3.5-11 | 3.60 | 25 {255} | 30 {306} | 600 | 2000 | 4.4 (A), 2.4 (B) |
5 | 5.24 | 25 {255} | 30 {306} | 600 | 2000 | 4.5 (A), 2.5 (B) |
6.5 | 6.55 | 25 {255} | 30 {306} | 600 | 2000 | 4.6 (A), 2.6 (B) |
8 | 8.18 | 25 {255} | 30 {306} | 600 | 2000 | 4.8 (A), 2.8 (B) |
IPH-3A(B)-10-20 | 10.2 | 25 {255} | 30 {306} | 600 | 2000 | 10.5 (A), 4.8 (B) |
13 | 13.3 | 25 {255} | 30 {306} | 600 | 2000 | 10.7 (A), 5.0 (B) |
16 | 15.8 | 25 {255} | 30 {306} | 600 | 2000 | 11.0 (A), 5.3 (B) |
IPH-4A(B)-20-20 | 20.7 | 25 {255} | 30 {306} | 500 | 2000 | 15.2 (A), 9.5 (B) |
25 | 25.7 | 25 {255} | 30 {306} | 500 | 2000 | 15.7 (A), 10.0 (B) |
32 | 32.3 | 25 {255} | 30 {306} | 500 | 2000 | 16.2 (A), 10.5 (B) |
IPH-5A(B)-40-21(11) | 40.8 | 25 {255} | 30 {306} | 400 | 2000 | 32.0 (A), 19.0 (B) |
50 | 50.3 | 25 {255} | 30 {306} | 400 | 2000 | 33.0 (A), 20.0 (B) |
64 | 63.9 | 25 {255} | 30 {306} | 400 | 2000 | 34.0 (A), 21.0 (B) |
IPH-6A(B)-80-21(11) | 81.3 | 25 {255} | 30 {306} | 300 | 2000 | 62.0 (A), 39.0 (B) |
100 | 101.6 | 25 {255} | 30 {306} | 300 | 2000 | 64.0 (A), 41.0 (B) |
125 | 125.9 | 25 {255} | 30 {306} | 300 | 2000 | 66.0 (A), 43.0 (B) |
The IPH Series Gear Pump specifications are tailored to meet the specific demands of various industrial applications, including required pressure levels, flow rates, and operational conditions. The versatility and robustness of the IPH series pumps make them a preferred choice across a wide range of machinery and equipment. This series offers a comprehensive range of models with varying capacities, ensuring optimal performance in diverse hydraulic systems.
IPH Series Gear Pump Installation and Operation Guidelines
Orientation and Mounting:
- Avoid mounting the pump with the suction port facing downward. The pump shaft should ideally be oriented horizontally to prevent excessive strain on the pump components.
- When installing, ensure the pump’s shaft and motor shaft are aligned with an eccentricity of no greater than 0.05mm. The installation base should be rigid enough to maintain alignment, and the angular error should not exceed 1°.
Fluid Handling:
- Use hydraulic fluids with an ISO VG32 to 68 rating, ensuring the fluid’s kinematic viscosity remains between 20 to 150mm²/s during operation. The fluid temperature should be maintained between 5°C and 65°C.
- Suction pressure should range from -0.02 to +0.03MPa, with a suction port flow rate exceeding 2m/sec. Include a suction strainer with a filtering grade of approximately 100μm and a 25μm filter in the return line to the tank.
Contamination Control:
- Ensure the hydraulic fluid maintains a contamination level of NAS10 or lower. Monitor the fluid for signs of contamination, such as whitish discoloration indicating air or brownish discoloration indicating dirt.
Air Bleeding and Start-up:
- During start-up, perform an inching operation (start-stop sequence) to bleed air from the pump and pipes. An air bleed valve should be equipped in circuits where air bleeding is challenging before startup.

Nachi Gear Pump Catalog
Model | Nachi Gear Pump Price | Contact Us |
---|---|---|
IPH-2A-3.5-11 | $300.00 - $500.00 | Inquiry about this Parts |
IPH-2B-5-11 | $350.00 - $550.00 | Inquiry about this Parts |
IPH-3A-16-20 | $600.00 - $800.00 | Inquiry about this Parts |
IPH-4A-25-20 | $800.00 - $1,000.00 | Inquiry about this Parts |
IPH-5A-40-21 | $1,200.00 - $1,500.00 | Inquiry about this Parts |
IPH-5B-64-21 | $1,400.00 - $1,700.00 | Inquiry about this Parts |
IPH-6B-100-21 | $1,800.00 - $2,200.00 | Inquiry about this Parts |
IPH-2A-5-11 | $350.00 - $550.00 | Inquiry about this Parts |
IPH-2B-6.5-11 | $400.00 - $600.00 | Inquiry about this Parts |
IPH-3B-10-20 | $500.00 - $700.00 | Inquiry about this Parts |
IPH-4A-32-20 | $900.00 - $1,100.00 | Inquiry about this Parts |
IPH-5A-50-21 | $1,300.00 - $1,600.00 | Inquiry about this Parts |
IPH-6A-80-21 | $1,700.00 - $2,000.00 | Inquiry about this Parts |
IPH-6B-125-21 | $2,000.00 - $2,500.00 | Inquiry about this Parts |
IPH-2A-6.5-11 | $400.00 - $600.00 | Inquiry about this Parts |
IPH-2B-8-11 | $450.00 - $650.00 | Inquiry about this Parts |
IPH-3B-13-20 | $550.00 - $750.00 | Inquiry about this Parts |
IPH-4B-20-20 | $750.00 - $950.00 | Inquiry about this Parts |
IPH-5A-64-21 | $1,400.00 - $1,700.00 | Inquiry about this Parts |
IPH-6A-100-21 | $1,800.00 - $2,200.00 | Inquiry about this Parts |
IPH-2A-8-11 | $450.00 - $650.00 | Inquiry about this Parts |
IPH-3A-10-20 | $500.00 - $700.00 | Inquiry about this Parts |
IPH-3B-16-20 | $600.00 - $800.00 | Inquiry about this Parts |
IPH-4B-25-20 | $800.00 - $1,000.00 | Inquiry about this Parts |
IPH-5B-40-21 | $1,200.00 - $1,500.00 | Inquiry about this Parts |
IPH-6A-125-21 | $2,000.00 - $2,500.00 | Inquiry about this Parts |
IPH-2B-3.5-11 | $300.00 - $500.00 | Inquiry about this Parts |
IPH-3A-13-20 | $550.00 - $750.00 | Inquiry about this Parts |
IPH-4A-20-20 | $750.00 - $950.00 | Inquiry about this Parts |
IPH-4B-32-20 | $900.00 - $1,100.00 | Inquiry about this Parts |
IPH-5B-50-21 | $1,300.00 - $1,600.00 | Inquiry about this Parts |
IPH-6B-80-21 | $1,700.00 - $2,000.00 | Inquiry about this Parts |
Get In Touch
If you’re interested in exploring a range of high-performance hydraulic pumps, and you’re looking for a brand that matches the quality and reliability of industry leaders, consider LOYAL.
Interested in learning more about our products and how they can benefit your operations? Visiting our official website or reaching out to our customer service team through official channels will provide you with all the information and assistance you need.
Choose LOYAL for reliable, efficient, and innovative hydraulic solutions tailored to meet and exceed your expectations.
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Nachi IPH Series Gear Pump: Answers to Common Queries
Explore the advantages of the Nachi IPH Series Gear Pump for enhanced performance.
Q: What is the maximum operating pressure for Nachi IPH Series Gear Pumps?
A: The maximum operating pressure for Nachi IPH Series Gear Pumps typically ranges from 2000 psi to 4000 psi, depending on the specific model.
Q: Can Nachi IPH Series Gear Pumps handle different types of hydraulic fluids?
A: Yes, Nachi IPH Series Gear Pumps are designed to handle a variety of hydraulic fluids, including mineral oils, synthetic oils, and water-glycol solutions.
Q: Are Nachi IPH Series Gear Pumps suitable for high-temperature applications?
A: Yes, Nachi IPH Series Gear Pumps can operate in high-temperature environments, with some models capable of handling temperatures up to 150°C (302°F).
Q: Can Nachi IPH Series Gear Pumps be used in mobile hydraulic systems?
A: Yes, Nachi IPH Series Gear Pumps are versatile and can be used in both stationary and mobile hydraulic systems, such as construction equipment and agricultural machinery.
Q: What types of mounting options are available for Nachi IPH Series Gear Pumps?
A: Nachi IPH Series Gear Pumps are available with various mounting options, including flange and foot mountings, to suit different application requirements.
Q: How do I select the right Nachi IPH Series Gear Pump for my application?
A: To select the right Nachi IPH Series Gear Pump, consider factors such as operating pressure, flow rate, fluid type, temperature, and mounting requirements. Consulting with a hydraulic system specialist or the manufacturer can also help ensure the best choice for your specific needs.