Torque Control

Closed circuit swing drive

Precise and smooth

Especially in machines where rotary motion is one of the main functions – e.g. material handlers – precise acceleration and braking of the motion is immensely important. This accuracy is possible thanks to the Linde Hydraulics Torque Control in combination with a variable displacement pump and a fixed displacement motor. The hydraulics immediately follow the operator's control signal and thus perform the movement precisely.

By rotating in a closed loop, no energy is lost during acceleration or braking. So when the operator of the machine now accelerates the rotary motion, the pump delivers only the amount of oil that is needed. As a result, there is no power loss and yet the movement immediately follows the control signal. In this case, little signal means a soft and gentle movement, while a lot of signal means sporty and fast turning.

If, on the other hand, the operator brakes, the pump is swung back and switches from pump to motor operation. The resulting braking energy can be transferred to the open-circuit system, for example, leading to fuel reductions of up to 20% in contrast to open-circuit turning.

Design Features

  • Torque Control on variable displacement pump (HPV) combined with fixed displacement motor (HMF or CMF)
  • Integrated pressure relief valves 
  • Pilot control


  • Sensitive control
  • Brake energy is transferred to the open loop
  • Jerk-free acceleration after deceleration phase
  • No drifting on gradients
  • 20 % fuel savings compared with open-loop swing
  • Utilization of braking energy (recuperation)
  • Adjustable maximum pressure, Adjustable acceleration/braking torque
  • Simple recuperation for compound movements
  • No mutual dependence between rotary actuator and linear actuators

Name File-Type Size  
Product Catalogue. Turning Power into Motion PDF 3.28 Mb Download

Contact us!

    You still have open questions about this product, would like to receive a quotation or need further documentation? Our experts will be happy to help you and will get back to you as soon as possible following your enquiry.

    Information on how we handle your personal data and what rights you have if you send us a contact form can be found in our Privacy Statement.

    Fields marked with (*) are mandatory fields. Further details are voluntary.