... 2.Heavy duty,self lock 3.Electric,manual Jacks Lifting Table parts include screw jacks, bevel gearboxes, electric motor, ... drawings and install manual.We select Jacks Lifting Table components following clients' application details, such as lift ... speed, working conditions etc.Jacks Lifting Table Features:1. Heavy duty, self-locking, positioning precision, uniform lifting speed, fully synchronization, ...