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Linear drives that lift 200 t - is that possible?

GROB GmbH has been manufacturing with a great deal of know‐how inmechanical engineering for over 70 years now and has accumulated many yearsof experience in the field of linear drives. The portfolio ranges from customspecial drives to mass‐produced screw jacks. Linear drives for large‐scaleapplications are rare, but that is precisely the reason why a high degree ofexperience is necessary.The MC200 is one of the very largest linear drives. With a maximum static loadof 2000 kN, this drive plays in the Champion's League.The challenges facing the material and design engineer are extraordinary.

Assembly and preparation

On account of the size of the linear drive, it is no longer sufficient to use aready‐cast housing. Therefore, the two‐part housing consists of a cast body anda base plate. All internal parts are prepared in the ready‐cast body and the baseplate is then fitted.Vergleich zu TR‐SpindelnAssembly and preparationOn account of the size of the linear drive, it is no longer sufficient to use aready‐cast housing. Therefore, the two‐part housing consists of a cast body anda base plate. All internal parts are prepared in the ready‐cast body and the baseplate is then fitted.Through the use of a buttress‐threaded spindle a higher lifting force can beachieved compared to a trapezoidal spindle. The thread profile is not even aswith a trapezoidal thread, but reinforced in one direction. The loadability is onedirection is thus increased.In order to ensure that there is always a film of lubricantbetween the friction points, liquid grease is used andspecial lubricating channels have been integrated.According to the customer the linear drive is rarely movedand even then only in small lifting movements. If normalgrease were to be used here, it would not flow quicklyenough to the lubrication point.

Our MC200 for loads up to 2000 kN.

 

Ask our GROB team for further information.

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