manually lifting equipment

(1).ModelRN-0.5T,1T,2T,3T,5T,10T,15T,20T,30T,40T,50T,100T(2). configurationworm and gear,bearing,housing and lead /ball screw(3).Installation 1. Screw Rod Axially Traversing (Translating Screw): Screw rotating and axial motion 2. Screw+ Antiturn(Keyed Jack): Screw anti-rotation device and axial motion 3. Travelling Nut and Rotating Screw(Rotating Jack): Screw fixed rotating and Travelling Nut does axial motion (4).screw rod endsstandard top plate,threaded end,plain diameter end and clevis end(5).CharacteristicElevating, Lowering, Pulling, Pressing, Pushing,Rolling(6).Power sourceManually(hand wheel), electrically(motor)(7).Feature1.positioning precision, safely self-locking2.Uniform lifting speed and fully synchronized3.Particularly appearance,compact structure4.Small size,easy installation,the use of flexible,power sources extensive,low noise,long life,security and environmental protection5.Lifting speed:75~3600 mm/min(8).Direction of lifting screw 1.Upright 2.Inverted(9).Attachmentmotor,hand wheel,reducers,Bellows,protective tube,bevel gearbox,Safety nut,frequency-inverter,brake,clutch,trunnion base,limit/travel switches,coupling,link shafting(10). How to select the right screw jack on your request?What factors you must consider?1.Model2.Installation3.Screw top ends4.single/pair input power5.Speed ratios6.Stroke7.Single or Multiple use8.where is it used(11).Industrymachinery,metallurgy,construction, irrigation, chemical industry, health care, culture, health and others industries