How to Configure/Order Complete the next 4 steps to configure your screw jack. Select additional options as required to customise. View PDF datasheet and download 3D CAD models.
Select the Screw Jack Size: For power rating of selected screw jack check the PDF Datasheet of model, after you have completed the 4 steps. Consideration should be given to the following; Power rating Power rating governs the operating life time of the screw jack. Operating life is governed by numbers of cycles, frequency of cycles and length of travel. Power is a function of input torque and input speed. Column stability Column stability or buckling strength, should be considered when the lifting screw is loaded in compression and the column appears slender. The end fixing arrangement affects column stability. Critical speed Critical speed should be considered where the lifting screw is slender. Long travel screws can be influenced by the rotation speed setting up harmful vibrations. The end fixing arrangement affects the critical speed. Before selecting a screw jack please refer to the information icon. (*Nominal capacity) C031 (*5kN) C037 (*10kN) C041 (*25kN) C058 (*50kN)
Select lifting screw option: Both rotating and translating screw jacks can be mounted on either top or bottom face Mounting The structure on which the jacks are to be mounted should have ample strength to carry the maximum load and should be rigid enough to prevent deflection or distortion of the jack support members. Safety distances between moving and stationary components must be established otherwise there is the risk of the system blocking and causing damage to the screw jacks and system components. Guiding Guide systems must be employed to limit the effects of expansion, contraction and deflection. Moving parts should be guided parallel to the jack lifting screws. Maintenance and lubrication The design must allow adequate access to inspect and carry out routine maintenance including onsite re-lubrication. Rotating Screw Translating Screw Translating Screw – Keyed
Select travel rate: The nominal travel is determined by the application Travel speed is a function of the incremental distance travelled by one rotation of the input worm shaft and speed of rotation. Having selected a travel speed be aware of the screw jack power rating, check PDF Datasheet for details, after completing step 4. The increments determine the distance travelled by 1 rotation of the input wormshaft. 0.25mm/rev 0.5mm/rev 1mm/rev 2mm/rev
Select the length of travel: When the jack is installed according to the standard dimensions shown in the PDF datasheet, the safe travel is the distance that the load moves. When the jack is installed with a non-standard closed height/and or bellows, the safe working travel should include an allowance for these features. The PDF datasheet gives details of these dimensions. Drag the slider to choose a predetermined length of safe travel. For fine adjustment on rotating screw options, see bearing plates in Accessories. The selected length is: 0mm 0mm 25mm 50mm 75mm 100mm 125mm 150mm 175mm 200mm 225mm 250mm 275mm 300mm 325mm 350mm 375mm 400mm 425mm 450mm 475mm 500mm 525mm 550mm 575mm 600mm 625mm 650mm 675mm 700mm 725mm 750mm 775mm 800mm 825mm 850mm 875mm 900mm 925mm 950mm 975mm 1000mm 1025mm 1050mm 1075mm 1100mm 1125mm 1150mm 1175mm 1200mm 1225mm 1250mm 1275mm 1300mm 1325mm 1350mm 1375mm 1400mm 1425mm 1450mm 1475mm 1500mm 1525mm 1550mm 1575mm 1600mm 1625mm 1650mm 1675mm 1700mm 1725mm 1750mm 1775mm 1800mm 1825mm 1850mm 1875mm 1900mm 1925mm 1950mm 1975mm 2000mm 0 2000 Trapazoidal material Steel (080M40) Stainless steel (316)