... -locking,Heavy duty,Uniform lifting speed and fully synchronized. 3. To select single screw jack lift table, or multi screw jacks lift ... tables4. Lift Table Structural elements: single or multi screw jacks,Spiral bevel gearboxes,linking shafts,couplings,guide pillars.5. ... of hydraulic jack,air bag,spring,linear actuator7. Screw jacks are used in tables that have extremely high capacity requirements ...