Product Overview
The IGP3-H016 is a representative model of the IGP series straight conjugate internal gear high-pressure pumps, featuring a displacement of 16 cc/rev and belonging to the IGP3 frame size. The pump is manufactured and supplied under brands including COSURE and HANGFA, utilizing an innovative straight conjugate internal gear tooth profile design.
The IGP series internal gear pump is a novel hydraulic power component characterized by simple construction, low noise, long service life, and low sensitivity to contamination. The series employs axial and radial pressure compensation to effectively enhance volumetric efficiency. Rated working pressure is 25 MPa (approx. 250 bar), with 10-second instantaneous pressure reaching 32 MPa (approx. 320 bar) .
Engineered as a direct OEM-replacement solution for COSURE / HANGFA original products, the IGP3-H016 fully complies with original design standards and mounting interface specifications, offering 100% direct interchangeability with OEM pumps. Every unit undergoes 100% workload simulation testing prior to shipment, rigorously validating pressure retention, volumetric efficiency, and internal leakage performance to meet or exceed OEM standards.
Model Code Breakdown (Bulleted List) :
IGP — Series: Internal Gear Pump
3 — Frame size: IGP3 series (displacement range 3.6 – 16 cc/rev)
H — Pressure rating: H = High-pressure series (25 MPa rated)
016 — Displacement code: 16 cc/rev
Technical Specifications
Model: IGP3-H016
Brand: COSURE / HANGFA
Series: IGP Series Straight Conjugate Internal Gear Pump
Displacement: 16 cc/rev
Rated Pressure (Continuous): 25 MPa (approx. 250 bar)
Peak Pressure (10 sec Instantaneous): 32 MPa (approx. 320 bar)
Rated Speed: 1500 r/min
Inlet Port Diameter: 15 mm
Outlet Port Diameter: 25 mm
Nominal Diameter: 110 mm
Input Power: 5.5 kW
Output Power: 5 kW
Volumetric Efficiency: 91%
Total Efficiency: 90%
Noise Level: 63 dB(A)
Material: Cast iron
Weight: 15 kg
Operating Principle: Internal gear pump (fixed displacement)
Suction Pressure: 0.05 Pa
Tooth Profile Type: Straight conjugate internal gear tooth profile
Key Technical Advantages
1. Straight Conjugate Internal Gear Tooth Profile – Ultra-Low Noise Operation
The IGP3-H016 features a straight conjugate internal gear tooth profile design that effectively eliminates the effects of trapped oil, significantly reducing pump noise and pressure pulsation. Even when system pressure increases, noise remains at low levels. Measured noise levels are as low as 63 dB(A) , making it particularly suitable for noise-sensitive applications such as injection molding machines and die casting machines.
2. Axial and Radial Pressure Compensation – High Efficiency & Long Life
Axial and radial pressure compensation effectively enhances volumetric efficiency. Straight conjugate gears are recognized in the industry as a low-wear pump type, and combined with innovative material treatment processes, significantly extend pump service life.
3. Superior High-Pressure Capability
Rated pressure of 25 MPa with 10-second instantaneous pressure up to 32 MPa. Even under high-pressure conditions, the pump maintains low-noise operation. This high-pressure capability makes it suitable for demanding hydraulic applications including injection molding machine clamping and injection processes.
4. Low Contamination Sensitivity – Strong Adaptability
The straight conjugate internal gear pump features low sensitivity to contamination, demonstrating stronger adaptability in industrial environments with fluctuating oil cleanliness—reducing the risk of failures and maintenance costs associated with fluid contamination.
Application Areas
The IGP3-H016 internal gear pump is widely used in the hydraulic systems of the following equipment:
Plastic Injection Molding Machines: Stable, low-noise hydraulic power for injection, clamping, and other processes
Die Casting Machines: High-pressure, high-flow hydraulic systems
Rubber Vulcanization Presses: Stable pressure holding
Pipe Bending Machines and Press Brakes: Precise pressure and position control
Shearing Machines: Reliable hydraulic power under high impact loads
Mining Machinery and Construction Equipment: Travel and implement hydraulic systems
Metallurgical Machinery and Power Plant Auxiliaries: Industrial hydraulic systems
Electric Forklifts: Hydraulic systems for material handling equipment
Expert Maintenance Tips
1. Model Confirmation
The IGP3-H016 belongs to the IGP3 frame size with 16 cc/rev displacement. The series also includes IGP3-H010 (10 cc/rev) and IGP3-H012 (12 cc/rev) variants. Before installation, confirm the correct displacement based on system flow requirements and verify the complete model code on the pump nameplate.
2. Rotation Direction Confirmation
Before installation, always verify that the PTO rotation direction of the host machine matches the pump’s rotation direction—incorrect rotation will result in pump failure to prime and may cause severe damage to internal components within a short period.
3. Port Position Confirmation
IGP series inlet and outlet port positions can be configured according to user requirements, with ports set at the factory as specified. Before installation, confirm that port positions match system piping—do not alter port positions擅自.
4. Installation Precautions
Thoroughly clean the mounting flange and shaft mating surfaces before installation to ensure no debris remains
Use specified torque values for mounting bolts—avoid over-tightening which may cause distortion of the cast iron housing
Ensure correct connection of inlet and outlet ports—inlet diameter 15 mm, outlet diameter 25 mm
5. First Start-Up and Bleeding
Before first start-up, must fill the pump with hydraulic oil through the inlet port—never start dry
After start-up, run at low speed with no load for 2–3 minutes to ensure complete air evacuation from the system
Check for abnormal noise or leakage—internal gear pumps are particularly sensitive to cavitation
6. Fluid and Filtration
Use high-quality anti-wear hydraulic oil compliant with ISO VG 32–68 grades
Maintain system oil cleanliness—while straight conjugate internal gear pumps have low contamination sensitivity, reasonable filtration is still recommended
Maintain operating temperature within recommended range
7. Periodic Maintenance
Check mounting bolt torque every 1,000 operating hours
Regularly monitor system operating pressure—not to exceed 25 MPa rated pressure (32 MPa peak)
The IGP series is known for long service life—nevertheless, regularly inspect shaft seals to prevent leakage
If flow output decreases, noise levels increase abnormally, or system temperature rises excessively, inspect and replace worn components promptly
