Different Screw Jack Arrangments for Crank Table

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As we know, screw jack mechanism can be used for crank table.
The mechanism usually includes manual screw jacks,connecting shaft, couplings and pillow block.

Usually the common used mechanism is 2-set screw jack mechanism.
When the table is very long,3-set screw jack mechanism can be selected.
When the table is very long and wide, 4-set mechanism can be considered.
According to the load capacity, SWL1T/SWL2.5/SWL5T can be selected.
Now, let's see a video about the crank table screw jack.

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