Another great example of Abssac's excellent machining capability. A quick turn around for a 100mm diameter stainless screw, with an internal gun drilled thread along with a bronze nut had both internal and external threads for fitting purposes. If you have a lead screw application let us help you complete the task.

Traditional lead or acme screws require the driven screw to counter rotate to achieve a bi-directional movement of the nut and importantly, to allow the nut to return to its original start position. The self-reversing screw only requires a rotation of the screw in one direction to achieve a reciprocated bi-directional linear movement.

The low friction within ball screw designs means that a high mechanical efficiency is delivered compared to that of lead screw designs. A typical ball screw may be 90 percent efficient, versus 30 percent efficiency of a lead screw of equal size. Ball screw specification is often a result of an applications requirement to have smooth...

The new “ABFT” nut design is for lighter load OEM applications where smooth movement and low drag torque for axial loads up to  4.5kg are required. The main body of the nut utilises the latest technology in injection moulding techniques to produce the structural strength.

The first patent for a roller screw was recorded in 1949 by the inventor Mr Bruno Standgren Carl, which was an adaptation of a frictionless bearing design patented back in 1939 by Mr Oscar and Stewart  McCurdy.

Abssac’s standard and precision http://www.abssac.co.uk/c/Linear+Products/1/ can be supplied in Stainless Steel and low Carbon Steel with lead accuracies of 0-20 Microns over 300mm. Our precision ball screws have operational tolerances comparable to more expensive ground ball screw assemblies, but at much less cost.