Manufacture and Sale Manual Worm Gear Screw Jack for Lifting Adjustable Table Crank Cast Iron Industrial Style Table, small jack screw lifting device, acme screw jack. hand crank acme screw drive table lift mechanism includes two 2.5 ton screw mechanisms for crank table base, four 2.5 ton screw mechanisms for crank table base, and two 5 ton screw mechanisms for crank table base. All our screw mechanisms have self-locking function, don't require any lock mechanism, they will hold and stop any position without turning hand crank.
* Crank Screw Lift Mechanism 2.5-Ton Kit with Two Lifting Points (Small-Size, or Normal Table Base) is consist of two pieces 2.5-ton screw mechanisms that support and adjust height, two pieces 200mm diameter handwheel (cast iron), two pieces couplings and one piece connecting rod.
* Crank Screw Lift Mechanism 2.5-Ton Kit with Four Lifting Points (Big, or Super-Big Table Base) is consist of four pieces 2.5-ton screw mechanisms that support and adjust height, two pieces 300mm diameter handwheel (cast iron), four pieces transmission gears, four pieces couplings and two piece connecting rods.
* Crank Screw Lift Mechanism 5-Ton Kit with Two Lifting Points (Normal, or Big Table Base) is consist of two pieces 5-ton screw mechanisms that support and adjust height, two pieces 300mm diameter handwheel (cast iron materials), two pieces couplings and one piece connecting rod.
Important Note: Avoid slow lifting speed, we provide double lead screw mechanism, which is two times faster than normal single lead screw mechanism. Important Note: Connecting rod length 36", 43", 48", 52", 60". Can be customized. Important Note: Height adjustment 8", 10", 12", 14", 16", 18", 20". Can be customized. Important Note: Handwheel diameter 6", 8", 10", 12", 16". Important Note: Paint color: no paint, black, blue, grey. Important Note: Available in electric motorized screw lift mechanism with single phase motor, dc motor or electric hand driller.
worm gear screw jack or worm screw jack is a mechanical motion control device used for lifting heavy weight objects, push or pull an object. The key components of screw jacks are trapezoidal lifting screw, worm screw, worm gear and gear housing. Worm screw is rotated manually (manual screw jack) or by a motor (electric screw jack). Screw jacks transfer the rotatory movement provided by an electric, hydraulic, pneumatic motor, or handwheel into a linear motion: a vertical lift, in pull or push, or horizontal positioning. They can be used individually or in configurations made up of several screw jacks coupled together through couplings, transmission shafts and bevel gearboxes. Screw jacks allow perfectly balanced systems even with loads not perfectly distributed on the surface. All available with motors if required.
Screw jacks come in many forms. The basic principle of converting rotary motion into vertical or horizontal movement is always present, yet they can be as simple as a hand wheel driven single unit up to linked multiple motorized units lifting many tonnes whilst keeping the load stable and level. The nut that travels up and down a screwed rod can be a relatively simple brass machined piece or a precise ball screw running on a machined shaft for high speed and 100% duty (continuous use), and motors are available in single or three phase AC, or DC for the smaller capacity screw jacks. With lifting capability up to 20 tonnes per unit and lengths up to 10 metres per screw, please speak to us with your application needs for the best options most suited to you. Most common applications include: Military equipment – designed and tested for use as heavy duty lifting equipment Floor lift – raise and lower whole floors in theatres or high end domestic installations. Solar panel positioning – outdoor large panels moved in all weathers. Agricultural machinery – lifting and positioning farm machinery Vehicle lifts – commercial or domestic parking lifts. Make more use of available space by stacking vehicles.
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