Overhead jacks are used in execution of ceilings whether concrete-based girders or joists.
It should be mentioned that overhead jacks are produced in three types:
- 3 meters jacks,
- 3.5 meters jacks,
- 4 meters jacks
The maximum loading operation of the above mentioned jacks is 1,500 kg i.e. these jacks can hoist freight up to 1,500 kg at large. The screw for regulating jacks produced at this company is of rolling type. Threads are manufactured through pressing without filing operation. It should be mentioned that this type of thread enjoys high resistance on cutting and friction force.
For implementation of project, below of concrete-based girds, form becomes easier through connection of head of jack (T-shape) on overhead jacks.
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