• Offer Profile
  • DST - Permanent Magnetic Couplings

    Leakage-free transmission is essential in process technology today owing to environmental protection reasons. Highly toxic or aggressive media require hermetically sealed drives for pumps, agitators etc
Product Portfolio
  • DST Permanent Magnetic Systems

  • • Today leakage-free transmission is essential in process technology owing to environmental protection reasons. Highly toxic or aggressive media require hermetically sealed drives for pumps, agitators etc.
    • DST ST permanent magnetic couplings optimally comply with the increasing environmental safety protection awareness. High torques can be safely transmitted wear-free through the vessel walls. If the maximum torque is exceeded, the torque transmission will be interrupted so that overload protection is always guaranteed.
    • The well proven compact and high-performance magnetic couplings from DST apply rare earth magnets with excellent magnetic capacities.
    • A significant performance advantage of the DST magnetic coupling is the freedom from wear in contrast to dynamic seals. This offers DST customers a competitive
    advantage in a growing worldwide market with applications in the chemical, pharmaceutical and plastics industries.

    Applications
    • DST permanent magnetic couplings from DST using contact-free torque transmission are installed in the following areas:
    • Chemical industry
    • Pharmaceutical industry
    • Food industry
    • Biotechnology
    • Industrial ovens
    • Compressors
    • Metering
    • Batching
    • Hydraulics

    Materials
    • The permanent magnetic coupling components in contact with the medium are selected from the following materials:
    • 1.4571 / AISI 316 Ti
    • Hastelloy
    • Titanium
    • 1.4435 / AISI 316 L
    • 1.4539 / AISI 904
    • 1.4301 / AISI 304
    • 1.4462
    • Plastic
     
  • Standard Construction Ranges

  • Performance spectrum
    • The broad spectrum of the DST standard construction range covers centrifugal pumps, rotating piston pumps, liquid ring pumps as well as agitators with differing torque ratings.
    • Individual intermediate solutions are also available.
    • Customer specific special solutions further down.

    Construction of DST permanent magnetic coupling
    • Outer ring
    • Canister (the shell is in Hastelloy from size 75/10)
    • Inner rotor completely encapsulated in AISI 316 Ti stainless steel
    • Magnet material Sm² Co17*
     
      • Standard construction range
        DST permanent magnetic coupling

  • Special Designs

  • Individual Solutions
    • In direct cooperation with our customers the requirements for practical and specific coupling systems are individually evaluated.
    • Thereafter the optimum cost/performance design is produced by DST using CAD systems.

    Advantages sm2Co17 vs. NdFeB
    • Very high energy product
    • High coercivity (resistance to demagnetization)
    • Stable at high temperatures up to 350° C
    • Very corrosion resistant
     
    • Magnetic coupling for pumps and agitator drives power 1 - 2000 Nm

    • Optimum system adaptability of DST-magnetic couplings

    • Demagnetization curve of Sm2 Co17 and Nd Fe B at room temperature and at 150° C. Sm2 Co17 - magnets are suitable for temperatures up to appr. 350° C.

  • Conversion Kits

  • Application Areas
    • Conversion kits can be retro-fitted in many areas, for example: PU machines, Hydraulic applications
    • DST conversion kits allow a combination with all major makes of pumps and drive motors.
    • We will evaluate specific applications to produce a functional combination in order to utilise the advantages of “hermetically sealed” and “wear-free” in an optimum
    way.
     
      • Application example
        Conversion kit for hydraulic pump
        with DST permanent magnetic
        coupling and ABB drive motor

      • Application example
        Conversion kit for hydraulic pump
        with DST permanent magnetic
        coupling and ABB drive motor

  • Bearings

  • Silicium carbide - ceramic plain bearings
    • Complete SSIC - Ceramic plain bearings are available as axial and radial types, predominantly for use in centrifugal pumps, combined with the DST standard permanent magnetic coupling.
     
      • SSIC Ceramic bearing in a
        centrifugal pump

      • Plain bearings for diverse media and
        temperature ranges

  • Agitator Drives

  • Individual Solutions
    • In direct cooperation with our customers the requirements for practical and specific coupling systems are individually evaluated.
    • Thereafter the optimum cost/performance design is produced by DST using CAD systems.

    Advantages sm2Co17 vs. NdFeB
    • Very high energy product
    • High coercivity (resistance to demagnetization)
    • Stable at high temperatures up to 350° C
    • Very corrosion resistant
     
    • Magnetic coupling for a plastics pump

    • The wetted areas of the inner rotor are
      coated with PP, PFA or PVDF for installations in critical media for the chemical industry.
    • Agitator drive for the pharmaceutical
      and food industry - Bottom mounted drive - hermetically sealed!

    • Using a bottom mounted agitator drive,
      the agitator is hermetically sealed, thus
      preventing any contamination of the
      product.
    • Agitator drive for the
      chemical industry - Overhead mounted drive - vapour sealed!

    • The overhead drive prevents the escape of any hazardous gases or the ingress of contamination during agitation.