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Pumps and internal gear pumps

Internal gear pumps

Internal gear pumps for energy-efficient drives

    Used in countless low-, medium- and high-pressure applications up to 420 bar peak pressure, hydraulic internal gear pumps from Voith ensure high volumetric and mechanical efficiency and low-pressure pulsation.

    At nominal speed, the overall efficiency is often 5 to 10% better than comparable pumps available on the market, making it the ideal solution for constant and variable speed drives.

    The pumps are available as:

    • Single pumps
    • Pump combinations (multi-flow pumps, multi-circuit pumps)
    • Motor pump units
    • Variable speed pumps
    • Servo pumps

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    The main features at a glance

      420
      Peak pressure up to 420 bar
      90
      Overall efficiency of over 90%
      5
      Multiple flow pumps combined out of up to 5 single pumps
      45 dB(A)


      Low noise emissions
      Cost-efficiency


      Reduction of operating costs
      Good pulsation behaviour
      Highly precise control

      Our product portfolio

        IPS
        IPS

        The IPS internal gear pump was developed for variable-speed drive applications. The performance range is up to 345 bar peak pressure and a maximum displacement volume of 252 cm³ per revolution.

        Product data sheet
        IPV
        IPV

        The IPV internal gear pump was developed for constant-speed drive applications. The performance range is up to 345 bar peak pressure and a maximum displacement volume of 252 cm³ per revolution.

        Product data sheet
        IPVS
        IPVS

        The IPVS internal gear pump was developed for constant-speed drive applications. The performance range is higher than the IPV pump and goes up to 420 bar peak pressure and a maximum displacement volume of 252 cm³ per revolution.

        Product data sheet
        IPH
        IPH

        The IPH internal gear pump was developed for special constant-speed drive applications. The performance range is up to 330 bar peak pressure and a maximum displacement volume of 126 cm³ per revolution.

        Product data sheet

        Variable speed pumps and servo pumps

          The future of hydraulics has arrived with variable speed pump systems. With these pumps, hydraulic systems are achieving a functionality never seen before. You save up to 70 percent more energy over conventional hydraulic systems. Noise emissions are also lower, in many cases by up to 20 db(A).

          Variable speed pumps

          Variable speed pumps in their simplest version are frequency-controlled. They consist of three main components:
           

          • Variable frequency drive (VFD)
          • Asynchronous motor
          • Voith internal gear pump

          Using a variable speed pump system is extremely simple. You provide us with all the machine or system cycle data. We then use this information to determine the necessary pressures and volume flows, and design the pump systems. The final pump solution you receive is a complete solution, as it is customized, ready to run, and all from a single source.

          Servo pumps

          For hydraulic systems that place high demands on control engineering, servo pumps are the perfect solution. The basic version of these pump systems also consists of three main components:

          • Servo inverter
          • Synchronous servo motor
          • Voith internal gear pump

          Servo pumps control the pressure or the volume flow. They precisely convert electrical energy into the hydraulic energy that is currently needed in the system. The classic use of valves for control can be either completely or partially omitted. This considerably simplifies every hydraulic system.
           

          Total cost of ownership (TCO)

          Total cost of ownership (TCO) for pumps and internal gear pumps
          Conventional hydraulic systems usually have constant volume flows. As a result, these systems have virtually constant energy consumption. Using servo pumps makes it possible to vary the volume flows in hydraulic systems. In the part load range and outside the machine cycle, the servo pumps operate at lower speeds or stop altogether. Servo pumps reduce the energy consumption by up to 70 percent. Using servo pumps can reduce the total cost of ownership (TCO) for the hydraulic system by up to 35 percent. Systems with variable speed servo pumps are amortized in a short timeframe – in most cases, within 1 to 2 years.

          Energy efficiency

          Comparison of plastics injection molding machines with different hydraulic systems

          Cycle of a plastics injection molding machine:

          Energy efficiency of a plastics injection molding machine with a fixed displacement pump
          Pump  Fixed displacement pump
          Drive motor  Constant speed asynchronous motor
          Control modes Using classic valves only
          Energy consumption 100 percent 
          Energy efficiency of a plastics injection molding machine with a variable displacement pump
          Pump Variable displacement pump
          Drive motor  Constant speed asynchronous motor
          Control modes Partial use of classic valves
          Energy consumption 70 percent
          Energy efficiency of a plastics injection molding machine with a Voith servo pump
          Pump  Voith servo pump
          Drive motor Variable speed synchronous servo motor
          Control modes Partial or total servo pump control
          Energy consumption 30 percent

          Drives

          Comparison of different drive systems for a plastic injection molding machine
          Based on multiple criteria, a drive with Voith servo pumps is better than other drive types. Injection molding machines using Voith servo-pump drives feature low total cost of ownership (TCO), reliable processes and high productivity.

          Product discontinuance notice

            We are committed to supplying the best products with the highest levels of quality and service. This includes providing timely information on the future availability of our product series.

            • Products to be discontinued include the IPC, IPCA, IPCAP, IPVA, IPVAP and IPVP series.
            • Orders for these series must be placed before year-end, 2021.
            • Service and spare part availability for these series is guaranteed up until year-end, 2024.

            In order to avoid unplanned downtimes and to extend your machine life time, you can migrate to the IPS, IPV, IPVS, IPH series already today!

            Performance data and operating characteristics of the discontinued pumps are achieved by the remaining series. Use the document “Product discontinuance notice” to identify variations in dimensions in order to see if a change requires adjustments of your installation situation.

            On request, we offer customized retrofit solutions to maintain your machine availability!

            • IPC Medium-pressure internal gear pumps for constant speed drives

              IPC Medium-pressure internal gear pumps for constant speed drives

              PDF
              English German
            • IPCA Medium-pressure internal gear pumps for constant speed drives

              IPCA Medium-pressure internal gear pumps for constant speed drives

              PDF
              English German
            • IPCAP Medium-pressure internal gear pumps for variable speed drives

              PDF
              English German
            • IPVAP High-pressure internal gear pump for variable speed drives

              IPVAP High-pressure internal gear pump for variable speed drives

              PDF
              English German
            • IPVP High-pressure internal gear pumps for variable speed drives

              IPVP High-pressure internal gear pumps for variable speed drives

              PDF
              English German

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