Monday 25th February 2013

Self-Reversing machined screws

A traditional lead screw and nut combination requires the driven screw to change its direction of rotation to enable the nut to return to its original start position. In certain applications such as in the reliable winding of cable and hose to winch drums, it would be advantageous to maintain a single direction of rotation of the screw but have the nut return to the start point.

With the self-reversing screw product available from Abssac Limited, only one direction of rotation is required to achieve reciprocated bi-directional lateral movement. This is achieved by using a follower blade in the nut that is matched to the particular groove width and screw turn round on the screw.

The follower blade material is usually phosphor bronze, Aluminium-Bronze or in some cases hardened steel and can be replaced if worn. Self reversing screws from 10mm  to 180mm in diameter, available in carbon, alloy and stainless steels up to a maximum length of 6 metres. Using gear ratios of either 4:1 or 2:1 the product has many applications.

For further details call us on 01386 421005 or look at the web page  - Self Reversing Screws