JHP3 Series High-Pressure Gear Pump

2 month ago

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

4 year

Product details

JHP3 Series High‑Pressure Gear Pump

1. Full Chinese Name

JHP3 Series High‑Pressure Hydraulic Gear Pump

(Originally manufactured by Jinan Quancheng Hydraulic, a mainstream domestic fixed‑displacement high‑pressure gear pump widely used in construction machinery)

2. Structure & Operating Principle

Core Structure

Adopts axial floating side plate clearance compensation and partial radial pressure balance design. Equipped with high‑load DU wear‑resistant bearings, the pump housing is made of high‑strength ductile iron for excellent high‑pressure and impact resistance. It can be assembled as dual or triple multi‑section pumps to suit complex hydraulic systems.

Operating Principle

It is a fixed‑displacement positive displacement gear pump. A pair of meshing gears rotate to form oil suction and pressure chambers. Floating side plates automatically compensate for gear end face wear, ensuring minimal volumetric efficiency degradation over long‑term operation under harsh construction machinery conditions.

3. Key Technical Parameters (General Standard)

Item Standard Value

Rated Operating Pressure 31.5 MPa

Maximum Peak Pressure 40 MPa

Rated Rotational Speed 2200 r/min

Maximum Allowable Speed 2500 r/min

Volumetric Efficiency ≥92%

Overall Efficiency ≥83%

Displacement Range 63~160 ml/r (JHP3063 / 3080 / 3100 / 3125 / 3160)

Shaft Configuration Flat key, involute spline, rectangular spline

Port Type Flange mounting

4. Model Code Explanation

Example: JHP3080‑21R

- JHP: Series code for high‑pressure gear pump

- 3: 3rd generation high‑pressure large‑displacement series

- 080: Nominal displacement 83.9 ml/r

- 21: Mounting specification code

- R: Clockwise rotation (right‑handed, viewed from shaft end); L = Counter‑clockwise rotation (left‑handed)

5. Product Advantages

1. High‑pressure heavy‑duty performance up to 40 MPa, suitable for import substitution of high‑pressure gear pumps

2. Automatic clearance compensation extends service life 2 to 10 times longer than conventional gear pumps

3. Compact structure, excellent self‑priming performance, low sensitivity to hydraulic oil contamination

4. Multi‑section design for integrated hydraulic systems in loaders, bulldozers and other machinery

5. Standardized mounting dimensions for high interchangeability and easy maintenance

6. Main Applications

Widely used in construction machinery, mining machinery, agricultural machinery and lifting equipment:

- Hydraulic working pumps for loaders, bulldozers and excavators

- Power systems for drilling rigs, piling machines and mucking loaders

- Hydraulic systems for fishing vessels, roadheaders and dump trucks

JHP3 Series High-Pressure Gear Pump

Product Overview

The JHP3 Series High-Pressure Gear Pump is a hydraulic power unit specifically designed for construction machinery, agricultural equipment, and industrial applications. Built aroundhigh power density, extended service life, and bidirectional operation capabilities, it is widely used in hydrostatic drive systems for mobile machinery (e.g., loaders, excavators, road rollers). Its core objective is to deliver stable, high-efficiency power output while withstanding high-frequency, heavy-duty operations in demanding environments.

Key Features

1. High Pressure and Efficiency

• Rated Operating Pressure: Up to 28–35 MPa, with peak pressure exceeding 40 MPa, meeting the power demands of high-resistance tasks like hard rock excavation and frozen soil penetration.

• Volumetric Efficiency: ≥95%, with total efficiency consistently above 92%, improving energy efficiency by 15–20% compared to conventional pumps and significantly reducing power consumption.

• Flow Adaptive Control: Equipped with a precision variable displacement mechanism, it adjusts flow output in real-time based on load variations (e.g., reducing flow under light loads and increasing it under heavy loads) to prevent energy waste.

2. Long Service Life and High Reliability

• Material Selection:

• Pump body:QT500-7 high-strength ductile ironwith a compressive strength exceeding 500 MPa, capable of withstanding high-frequency vibrations and impact loads.

• Gears and other transmission components:20CrMnTi alloy steel, hardened via carburizing and quenching to a surface hardness of HRC 58–62 for superior wear resistance.

• Seals:Imported fluororubberwith oil resistance and high-temperature tolerance (-30°C to 120°C), limiting hydraulic oil leakage to ≤0.3 mL/min (industry average: 1.2 mL/min).

• Precision Manufacturing:

• Gear mesh clearance controlled at0.003–0.005 mm, with piston-to-cylinder clearance precision of0.001 mm, ensuring smooth operation and optimal sealing.

• Each pump undergoes18 rigorous testing procedures, including 24-hour no-load trials, 12-hour load tests, and high/low-temperature simulations. After 1,000 hours of continuous full-load operation, core component wear is limited to 0.002 mm, with performance degradation below 3% (industry average: 5%).

3. Bidirectional Operation and Multi-Domain Adaptability

• Supportsbidirectional rotation, ideal for hydraulic systems requiring forward/reverse functionality (e.g., cranes, road rollers).

• Modular design and customizable parameters enable coverage across low-, medium-, and high-pressure ranges, precisely matching the diverse needs of construction machinery, agricultural equipment, and industrial systems.

4. Low Noise and Contamination Resistance

• Features abionic flow channel designto optimize internal oil paths, reducing hydraulic fluid turbulence and pressure losses while lowering operational noise by 5–8 dB.

• High contamination tolerance allows operation in environments with minor particulate matter in the hydraulic fluid, minimizing failure risks.

Technical Specifications (JHP3125 Example)

• Displacement: 134.4 mL/r

• Rated Pressure: 31.5 MPa

• Maximum Speed: 2,500 rpm

• Drive Power: 150.58 kW

• Weight: ~20 kg (varies by model)

• Operating Temperature Range: -30°C to 90°C

• Compatible Media: Hydraulic oil, anti-wear hydraulic fluid

Applications

1. Construction Machinery

• Excavators: Provides sufficient power for digging motions, reducing cycle times (e.g., a medium excavator in a infrastructure project achieved a 10% reduction in cycle time and a 12% increase in daily output after adopting JHP3 pumps).

• Loaders: Maintains stable power output during high-frequency, heavy-duty tasks like shoveling and transporting, minimizing operational interruptions.

• Road Rollers: Leverages bidirectional rotation for efficient compaction.

2. Agricultural Machinery

• Combine Harvesters: Ensures smooth operation of header lifting and conveyor chains, reducing grain damage (e.g., a farm reported a drop in grain breakage from 2.5% to 1.8% after implementation).

• Tractors: Precisely controls hydraulic hitch systems and traction force, minimizing soil compaction and improving tillage/seeding efficiency.

3. Industrial Equipment

• Injection Molding Machines: Enhances product qualification rates (e.g., a machinery processing plant achieved a rise from 97% to 99.2% after switching to JHP3 pumps).

• Machine Tools: Provides stable power for hydraulic clamps and sliding tables, improving machining accuracy.

Competitive Advantages

• Energy Efficiency: Liquid force optimization and intelligent control reduce equipment energy consumption (e.g., a construction enterprise with 20 excavators saved 36,000 liters of fuel annually and cut costs by over RMB 250,000 after upgrading to JHP3 pumps).

• Low Maintenance Costs: Hydraulic oil replacement intervals extend from 2,000 to 3,500 hours, reducing annual maintenance costs by 40% (e.g., a farming cooperative with 15 tractors achieved >92% equipment uptime).

• Environmental Compliance: Low heat generation reduces hydraulic fluid degradation and cooling system load, aligning with green production goals under carbon reduction policies.

Conclusion

The JHP3 Series High-Pressure Gear Pump stands out for itshigh pressure, efficiency, durability, and bidirectional operation, making it an ideal choice for hydraulic systems in construction machinery, agricultural equipment, and industrial applications. Its modular design and customizable parameters enable precise alignment with diverse power requirements, driving equipment upgrades and operational cost optimization.