Parameter Description of NACHI Gear Pump IPH-3A(B)-13-20

1. Model Interpretation

• IPH: Series identifier, indicating the IP series internal gear pump, featuring high efficiency and high pressure resistance based on patented axial and radial pressure loading technology.
• 3: Size grade, specifying the pump’s small overall structural size and matching small-sized installation dimension standard, suitable for compact equipment layout.
• A(B): Mounting type. “A” stands for foot mount type, and “B” stands for flange mount type, providing two installation options to adapt to different small-equipment layout requirements.
• 13: Displacement specification, representing a theoretical displacement of 13 cm³ per revolution (cm³/rev), belonging to the small displacement range of the IP series.
• 20: Design code, indicating a standard design configuration for the 3A/3B size grade, focusing on compact structure and stable operation, suitable for small-flow hydraulic system scenarios.

2. Core Technical Parameters

3. Performance Characteristics

• High Efficiency & Durability: Adopts patented axial and radial pressure loading system, enabling stable operation under rated pressure and ensuring excellent durability and long service life, which is fully adapted to the small-displacement 13 cm³/rev configuration and 20 design code standard.
• Low Noise & Low Pulsation: Equipped with modified involute short-tooth gears for internal meshing, which significantly reduces pulsation and noise during operation, achieving extremely quiet performance that is more suitable for compact equipment with high noise requirements.
• Compact Structure & Easy Installation: The small size grade 3 design makes the pump compact and lightweight, which not only saves installation space but also simplifies daily inspection and maintenance work, reducing maintenance costs and downtime.
• Stable Operation: The optimized gear design and precise manufacturing process, combined with the 20 design code standard configuration, ensure stable discharge flow and pressure, with strong adaptability to small-flow, low-load working conditions.

4. Operating Requirements

• Hydraulic Fluid: Recommended to use R&O type and wear-resistant hydraulic oil with ISO VG 32 to 68 (viscosity index ≥ 90). The kinematic viscosity during operation should be 20 to 150 mm²/s, which is fully suitable for the small-displacement 13 cm³/rev configuration and ensures stable oil supply.
• Operating Temperature: The ambient temperature range is 0 to 60℃ (32 to 140℉), and the hydraulic oil temperature range is -40 to 65℃ (40 to 149℉). Preheat at low pressure when the startup oil temperature is below -40℃ until it reaches the normal operating temperature to avoid damage to pump components.
• Suction Conditions: The suction pressure should be 0.02 to 0.3 MPa (2.9 to 44 psi), and the flow rate at the suction port should be greater than 1.83 m/s (6 ft/sec). A suction strainer with 100 µm (150 mesh) filtering grade is recommended, and a 25 µm line filter should be installed in the return line to protect the pump components and ensure stable operation.
• Contamination Control: The hydraulic fluid contamination level should be maintained at NAS 10 or lower, avoiding contamination by water and other impurities. Check the fluid color regularly to prevent air or dirt contamination, which is crucial for the stable operation of the small-sized pump and the 20 design code configuration.
• Installation Notes: Install the pump with the shaft horizontally, avoiding radial or thrust loads on the shaft end from pulleys or gears. Bleed air from the pump and pipelines through inching operation (start-stop) during startup to ensure smooth operation. During trial operation, check for abnormal noise, vibration and leakage to ensure safe use.

5. Application Scope