Servo pump

Efficient machine solution for hydraulic and hybrid injection molding machines

Baumüller supplies innovative and optimized drive solutions for all sectors through years of intensive cooperation with mechanical engineers. Due to the integrated control unit in the converter, Baumüller servo pumps can easily be connected to your machine control systems. In the process, they reduce the energy consumption of your drive system significantly and also allow for shorter cycle times, greater accuracy as well as lower noise development. See for yourself and rely on the flexibility and power of innovation of the experts from Baumüller.

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Expertise for your machine with hydraulic drive

The Baumüller servo pump combines the advantages of hydraulic power transmission with the benefits of electric servo drive technology.

Servo pump drives for hydraulic supply consist of a constant pump driven by a servo motor. Changing the motor speed in a highly dynamic way allows the precise control of the volume and pressure. If neither volume nor pressure are required, the motor stops, consuming no energy.

Efficient machine solution with Baumüller

efficient machine solution with baumüllerThe following principle applies to pressure control: The motor always rotates at the lowest speed. It consumes only as much energy as is necessary to maintain pressure control.

The integrated Baumüller control function allows an easy connection to existing machine control systems without having to make changes to the software. This leads to very good control results and simplifies commissioning.

The control of the drive and the low energy consumption of the components, especially in the partial load range, results in a highly energy-efficient, yet economical solution that you can use in your machines as a decisive competitive advantage.

Profitability consideration


Benefits for your machine concept

  • Significant reduction of energy consumption
  • Excellent control properties and repeatability
  • Minimal response time at high and low pressure
  • Noise reduction of up to 20 dB(A)
  • Integrated control in the converter; Compensation of hydraulic non-linearities
  • Servo control increases the degrees of freedom during the machine design
  • Significantly better degree of efficiency than controlled asynchronous motor with variable adjustment pump

New servo pump features ensure significantly reduced service requirements

Servo pump control functions – Adaptive pressure precontrol

    The intelligent control algorithm adjusts adaptively to different pressure rise rates; this means that the parameterization only has to be set once and can then be regulated automatically. The software enables an overshoot-free pressure jump in minimum time and ensures an optimized process sequence. Since the corresponding parameters are automatically readjusted during the production process, the adaptive control eliminates or significantly reduces pressure overshoots. The required pressure value is set completely automatically, with a smooth transition and in milliseconds.

Greater productivity through permanent lubrication of the internal toothing

MotorHigh efficiency, better process performance and low heat development – these are just a few of the advantages of a servo pump. This is why the Baumüller servo pump solution has been in use for years in a number of applications, such as presses and injection molding machines. By now, their use has become part of the standard equipment of machine manufacturers, partly due to rising energy costs. End customers are increasingly taking the total operating costs into account and are finding that the purchase price for a servo pump generally pays for itself within a year due to the reduction in energy consumption of approx. 30 percent.

Direct pump attachment: Compact and low-maintenance

    In the latest enhancement, the hydraulic pump is attached directly to the engine with a gear tooth system. This dispenses with the coupling and pump support as is the case with classic servo pump versions, which has the advantage of a shorter installation length and therefore a smaller machine installation area. Furthermore, direct attachment eliminates the need for several mechanical parts. In this way, the machine manufacturer benefits from lower storage costs and the machine operator from lower maintenance costs.

Permanent oil lubrication of the internal toothing

Servopumpe 1 03 weiss
    Another advantage is the intelligent use of hydraulic oil. The latest version, for example, features new connections for both the motor and the constant pump so that the leakage flow of the pump can be used for the permanent lubrication of the gear tooth system. This eliminates the need for grease lubrication of the internal toothing, which is required every 3000 operating hours on average. The machine can operate without interruption. Baumüller is the sole supplier of this solution, which results in significantly reduced service costs for machine manufacturers and end customers. The new features have already been implemented in Baumüller's three-phase current synchronous motor DSD2-100 and are especially suitable for plastics machines. Additional sizes are in preparation.

Drive Intelligence for Servohydraulics

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Servo pumps
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