Micro annular gear pump mzr-4665

Compact hermetic pump for discrete dosage

The micro annular gear pump mzr-4665 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 motion controller. This controller allow speed and position control for highly accurate dosage. With a diameter of 22 mm and 69 mm in length, the pump weighs 120 g. The pump handles flow rates from 0.12 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 motion controller
    programmable motion controller for speed and position control with RS-232 interface
  • Compact dimensions
    diameter 22 mm, length 69 mm
  • Long service life
    wear-resistant, ultra-hard materials
  • Fuel cells
  • Mobile analytics
  • Biotechnology
  • Marine technology
  • Fuel analysis
  • Filling processes
  • Isocyanat
  • Separating agents
  • Solvents
  • Metering of liquefied gases
  • Aerospace industry
  • Decentralized heating and cooling systems
  • Dispensing of additives
  • Dispensing of adhesives
  • Dosing of oil
  • Laboratory automation

Terminal box S-G05

Terminal box for all drives with integrated controller mzr-xxx5
Flow rate 0.12 – 72 ml/min
Viscosity range 0.3 - 500 mPas
Velocity range 10 – 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, 6.4 W
Controller integrated motion controller
Interface 1x analog input 0 – 10 V, 1x digital input 24 V,
1x digitally programmable output, RS-232,
CANopen *
Dimensions (L x W x H) Ø 22 mm, length 69 mm
Weight approx. 120 g (manifold assembly approx. 145 g)
Electrical connection 8-pole connector, Wago, cable length 1 m
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
Smallest dosage volume 20 µl
Remark * Customized solutions on request

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-4665
Manual mzr-4665 (2.0 MB)
Betriebsanleitung mzr-4665 (1.8 MB)
2.0 MB
Micro annular gear pump mzr-4665
Micro annular gear pump mzr-4665 (280 KB)
Mikrozahnringpumpe mzr-4665 (421 KB)
Micropompe gérotor mzr-4665 (282 KB)
280 KB