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.

Magnetic Drive Gear Pump Stainless Steel Pump Head MG200X

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%

Magnetic Drive Gear Pump – FAQ

Q1: What is the main advantage of a magnetic drive gear pump?
A: It uses a sealless magnetic coupling, which eliminates shaft leakage and improves safety when handling corrosive or hazardous fluids.

Q2: What is the maximum pressure and flow rate?
A: Depending on the model, max pressure can reach up to 10 MPa and flow rates from 10 to 1500 ml/min.

Q3: What materials are available for chemical resistance?
A: Gear and housing materials include enhanced PEEK, PTFE, PPS, and other engineering plastics suitable for acids, alkalis, and solvents.

Q4: Can the pump run in both directions?
A: Yes, the gear pump supports reversible flow if required by the system.

Q5: Is the gear pump pulsation-free?
A: It provides nearly pulseless and linear fluid transfer, ideal for precise dosing and lab applications.

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.