We are manufacture and sale Hand Wheel Screw Jack for Crank Table or Desk Hand Adjustable Crank Coffee Table, hand operated lifting screw jacks, hand crank screw jack for lifting tables. hand crank screw drive lift platform jack 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.
This machine screw jack has low cost and large stock. It offers positive mechanical action, precise positioning, and uniform lifting speeds. The payloads from 1 ton to 120 ton. A total of 9 sizes are available, each in a traveling nut version and a basic screw translating version. Electric Driven and Manual Operated both are available Self-locking under static conditions Option: Anti-rotation, anti-backlash, safety nut Right hand and left-hand screw threads are available Standard and custom end fittings, mounting options, and drive shaft Several Screw jacks can be synchronised by means of connection shafts and an electronic controller. Worm gear machine screw jacks are typically used to move heavy loads in low-duty-cycle setups and low-speed applications.
Linear Power Jacks (Machine Screw Type) is a standard model, suitable for low speed, low frequency operations. Major components include trapezoidal screw and high precision worm gear. Simple, compact and affordable. The unique sliding motion of trapezoidal screw provides smooth and consistent low speed, suitable for low frequency operations. Machine screw has a self-lock feature based on calculation, and can maintain loads.
If you would like to learn more information and price about hand crank screw drive lift platform, contact us today. Our teams are looking forward to working with you.