Micro annular gear pump mzr-4661

Compact hermetic pump for continuous dosage

The micro annular gear pump mzr-4661 is suitable for handling crystallizing, oxygen or moisture sensitive liquids, because the pump has no shaft seal. This functionality is made possible thanks to a liquid-separating cup surrounding the magnetic drive. The compact dimension of this magnetic hermetic pump is achieved by a completely new product design and optimal matching with an integrated speed controller. With a diameter of 22 mm and 69 mm in length, the pump weighs 115 g. The pump handles flow rates from 4.8 to 72 ml/min with a high precision and low pulsation. The pump is suitable for applications where an avoidance of leakage and a long service life as well as low energy consumption are important requirements. The pump is supplied with a terminal box for speed control and LED status indicator.


  • Hermetic pump design
    pump without shaft seal
  • Magnetic drive
    inner magnet system driven by rotating magnetic field
  • Integrated controller
    supply voltage 24 V DC, speed control by analog input 0-10 V
  • Compact dimensions
    diameter 22 mm, length 69 mm
  • Long service life
    wear-resistant, ultra-hard materials
  • Fuel cells
  • Dosing of AdBlue
  • Mobile analytics
  • Biotechnology
  • Marine technology
  • Fuel analysis
  • Isocyanat
  • Separating agents
  • Solvents
  • Metering of liquefied gases
  • Aerospace industry
  • Decentralized heating and cooling systems
  • Dispensing of additives
  • Dispensing of adhesives
  • Dosing of oil

Terminal box S-G61

terminal box for all drives with integrated controller mzr-xx61,
connector for supply voltage 24 V (12 – 28 V DC), integrated protective circuit, potentiometer for speed setting, analog input 0 – 10 V
Flow rate 4.8 – 72 ml/min
Viscosity range 0.3 - 500 mPas
Velocity range 400 – 6000 rpm
Fluid connection slip fittings with outside diameter 2 mm optional: manifold assembly M2.1
Wetted parts stainless steel 316L, 318LN, ceramics, tungsten carbide Ni-based, epoxy resin;
static seals: FPM, optional: EPDM, FFPM
Motor canned BLDC-motor, 24 V DC, 8.9 W
Controller integrated speed controller
Interface 0–10 V
Dimensions (L x W x H) Ø 22 mm, length 69 mm
Weight approx. 115 g (manifold assembly approx. 145 g)
Electrical connection 6-pole connector, Micro-Fit
Maximum system pressure 6 bar (87psi) (60 bar (870 psi)*) (inlet pressure + differential pressure)
Differential pressure range 0 – 5 bar (73 psi)
Operating temperature range -15 ... +60 °C
Displacement volume 12 µl

Even if single parameters are within the indicated performance range of technical data, certain parameter combinations may not be achievable. Single parameters may exceed their indicated performance range under adequate circumstances. For detailed evaluation please contact HNP Mikrosysteme. Actual performance may vary.
Specifications are subject to change without notice.

File Language Size
Manual mzr-4661
Manual mzr-4661 (0.9 MB)
Betriebsanleitung mzr-4661 (0.9 MB)
0.9 MB
Micro annular gear pump mzr-4661
Micro annular gear pump mzr-4661 (1.5 MB)
Mikrozahnringpumpe mzr-4661 (168 KB)
Micropompe gérotor mzr-4661 (1.4 MB)
1.5 MB