Magnetic Drive Gear Pumps: Precision Fluid Control for Modern Applications
What is an External Gear Pump?
Magnetic drive gear pumps, also known as mag-drive gear pumps, are a class of positive displacement pumps that use magnetically coupled gears to move fluids without direct contact between the drive and the pump chamber. This design eliminates shaft seals and reduces the risk of leakage, making these pumps ideal for handling hazardous or corrosive fluids in industries like chemical processing, pharmaceuticals, electronics, and environmental equipment.
How Magnetic Drive Gear Pumps Work
Magnetic drive gear pumps consist of an inner gear assembly housed in a chamber and an outer drive magnet connected to the motor. The drive magnet transmits torque to the internal gears through a magnetic coupling, allowing the pump to operate without a direct shaft connection.
This design offers:
Leak-Free Performance: No dynamic seal, preventing leakage.
Chemical Resistance: Engineered with high-grade materials such as PEEK, PPS, or PVDF.
Compact & Efficient Design: Ideal for small-scale, precision systems.
Key Features
Drive Type: Magnetic Coupling
Pump Head Materials: PEEK, PPS, PVDF, Stainless Steel
Flow Range: 10–1000 ml/min
Max Pressure: Up to 6–10 MPa
Viscosity Range: 0.3–2000 cps
Temperature Range: -20°C to 120°C
Motor Options: Brushed, Brushless DC, Stepper
Applications
Chemical Dispensing: Leak-free transfer of acids, bases, and solvents.
Medical Equipment: Precise metering of reagents and cleaning fluids.
Laboratory Automation: Reliable delivery of test and analysis solutions.
Fuel Cells & Batteries: Circulation of cooling and electrolyte liquids.
Environmental Monitoring: Sampling of groundwater or wastewater with accuracy.
Advantages Over Traditional Pumps
Magnetic Drive Gear Pump Advantage
Leakage Risk: None
Maintenance: Low
Corrosion Resistance: Excellent
Compact Design: Yes
Precision Flow Control: High
Case Study: Medical Device Manufacturer
A European medical equipment company needed a reliable pump for dosing cleaning agents in a compact sterilization unit. Traditional gear pumps caused frequent leaks and required regular maintenance.
Solution: The company integrated a miniature magnetic drive gear pump using a PEEK pump head and brushless DC motor.
The result:
Reduced downtime by 40%
Maintenance cycle extended from 3 to 12 months
Improved dosing accuracy from ±2% to ±0.3%
Conclusion
Magnetic drive gear pumps offer unmatched reliability, chemical compatibility, and precision control. For businesses seeking compact, efficient fluid transfer solutions in sensitive environments, these pumps are a top choice.
Contact us to explore how our customizable mag-drive gear pumps can fit your application.