Anti backlash nuts

Eliminating backlash from lead screw nut designs has always been a demanding task. Removing the backlash has often meant a sacrifice in drag torque, however we have a number of solutions to this age old problem.

For example, one new nut design utilises a revolutionary cam collar, which will eliminate the backlash, maintain a high axial stiffness and simultaneously reduce drag friction. Other designs enable lighter loads (up to 4.5kg) smooth movement and low drag torque. Some nut designs utilise the latest technology in injection moulding techniques to produce the precision form complete with an integral three holed attachment flange for ease of connection to the application. An external spring and collar arrangement creates the axial preload to eliminate the backlash when on the screw.

All our antibacklash nut designs compliment the complete range of lead screws and in some cases can be tapped to run on ball screw threads.

Primarily we use Delrin as our base material for the plastic nuts. Delrin is an acetal resin engineering plastic and is often used as a metal substitute. Delrin is lightweight, has a low coeficient of friction, is extremely wear-resistant and capable of operating in temperatures in excess of 90 degrees Celsius (approx 200 degrees Fahrenheit). Other plastic materials we use are: polyoxymethylene (POM), acetal resin, polytrioxane and polyformaldehyde. Bronze nuts are normally machined from SAE660 bronze but we have also machined in aluminium bronze hybrids for certain applications.

If you require further technical information, please do not hesitate to contact our sales engineers who will be more than happy to help you with your selection. Alternatively download the relevant linear catalogue from the download button at the top of this page or use the following link to request a printed catalogue or a CD version. CD/Catalogue

For Product Advice Call Us Now 01386 833301

 

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