Polymer lead screw nut for lubrication-free adjustment

Igus’ injection-moulded dryspin JGRM polymer nut offers a cost-effective alternative to ball screw nuts. The new lubrication-free and wear-resistant design can move heavy loads. For higher axial loads, the new lead screw nut is also available with a stainless steel plate as a “Heavy Duty version”.

“The new JGRM series is a robust alternative to ball screw nuts. The new design of the nut, distributes the radial and axial loads in such a way, that we can absorb higher forces in contrast to conventional flanged lead screw nuts,” says Thorben Hendricks, Division Manager of Screw Technology at igus GmbH.”

The new type is based on the connection sizes and pitches of ball screws and therefore can be easily replaced. The nut offers a variety of installation methods: it can be screwed on or off or installed in a hole. The thread centring spigot, the anti-rotation feature by means of spanner flats, and the use of four M6 cap head screws helps in the installation. The nut is manufactured by igus using injection moulding in Cologne, so it is very light and cost-effective.

Compared to ball screw systems, the polymer lead screw nuts cost only half as much. Due to the use of iglidur J high-performance polymers, the nut has a very low coefficient of friction. The rounded thread flanks and the absence of balls make the lead screw very smooth running. In addition, due to the use of dry lubricants, the lead screw nut does not require external lubrication that has to be released into the environment.


For further information: E-mail: vinayak@igus.net

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