Abssac has introduced a range of self-reversing screws from 10 to 180mm
in diameter, in a variety of materials, including carbon, alloy and
stainless steels, to a maximum length of 6m. Unlike the traditional lead
screw and nut combination, the self-reversing screw does not require the
driven screw to change its direction of rotation to enable the nut to
return to its original start position. The reciprocated bi-directional
lateral movement is achieved by using a follower blade on the nut that is
matched to the particular groove width and screw turn round on the screw.
Gear ratios of 4:1 and 2:1 are offered for a wide range of applications
requiring a reciprocating lateral movement.
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