External and Internal Gear Pump
The external and internal gear pump are two types of positive displacement pumps widely used in various industrial applications. External gear pumps feature two gears meshing together within a tightly fitting housing, providing high efficiency and precise flow control, making them suitable for handling high-viscosity fluids and applications requiring constant pressure. Internal gear pumps, also known as Gerotor pumps, have an inner rotor with fewer teeth and an outer rotor with more teeth, offering smooth operation and reduced noise, ideal for applications where space is limited and handling viscous fluids is crucial. Both types are used in industries such as automotive, hydraulic systems, and food processing for their reliability and versatility in fluid transfer processes.
Product Introduction
The external and internal gear pump are two types of positive displacement pumps widely used in various industrial applications. External gear pumps feature two gears meshing together within a tightly fitting housing, providing high efficiency and precise flow control, making them suitable for handling high-viscosity fluids and applications requiring constant pressure. Internal gear pumps, also known as Gerotor pumps, have an inner rotor with fewer teeth and an outer rotor with more teeth, offering smooth operation and reduced noise, ideal for applications where space is limited and handling viscous fluids is crucial. Both types are used in industries such as automotive, hydraulic systems, and food processing for their reliability and versatility in fluid transfer processes.
Premium External and Internal Gear Pump Solutions - Technical Overview
Our comprehensive range of external and internal gear pumps delivers exceptional fluid handling performance for industrial, mobile, and process applications. These precision-engineered pumping solutions combine robust construction with advanced hydraulic efficiency to meet the most demanding operational requirements.
Product Specifications
1. External Gear Pump Features:
- Maximum working pressure: 350 bar (5,075 psi)
- Flow range: 0.5-750 L/min
- Viscosity handling: 1-500,000 cSt
- Gear materials: Case-hardened steel (60-62 HRC)
- Volumetric efficiency: ≥93%
2. Internal Gear Pump Features:
- Superior suction capability (0.8 bar vacuum)
- Viscosity range: 10-1,200,000 cSt
- Bi-directional operation
- Low shear design
- Pulsation-free flow
Technical Advantages
✓ 30% longer service life than industry standard
✓ 25% higher energy efficiency
✓ Reduced noise levels (<70 dB(A))
✓ Wide temperature range (-50°C to +200°C)
✓ Multiple mounting configurations (SAE, DIN, ISO)
Material Options
- Cast iron (standard)
- Ductile iron
- Stainless steel (304/316)
- Bronze/aluminum combinations
- Special alloys for corrosive applications
Sealing Systems
- Mechanical seals (single/double)
- Lip seals
- Cartridge seals
- Gas barrier seals
- FDA-compliant options
Applications Include
- Industrial hydraulic systems
- Mobile equipment (construction/agriculture)
- Lubrication oil circulation
- Chemical processing
- Food and pharmaceutical production
- Marine and offshore systems
Quality Assurance
- ISO 9001:2015 certified manufacturing
- Material traceability documentation
- 100% performance testing
- 72-hour endurance validation
- Dimensional inspection reports
Our external and internal gear pump solutions are available with
- Custom flow configurations
- Special material requirements
- Explosion-proof certifications
- Smart monitoring interfaces
- Global technical support
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