Worm screws and worm wheels for demanding continuous use
26 March 2018
For constructing worm gear drives, norelem now supplies a wide variety of worm screws and worm wheels.
They are available ex-works with centre distances of 17mm to 80mm, whereby several ratios are available per centre distance.
The right hand, case-hardened steel worm screws from norelem have ground flanks and bores. A bronze alloy with aluminium content to improve the chemical resistance has been selected for the worm wheels because of the better glide and dry-running properties. The worm wheels are optimal for continuous use at high speeds and high torques. They are mostly ready for use and can be mounted without having to be reworked.
The worm screws and worm wheels are sorted according to centre distance in the norelem catalogue THE BIG GREEN BOOK and in the online shop. There are several ratios to choose from per centre distance.
The reason: Only worm screws and worm wheels with the same centre distance or the same ratio can be combined to form a functioning worm drive. The centre distances are available in small increments from 17mm to 80mm ex-works.
A worm gear is a right-angled power transmission with synchronous height offset (centre distance of the crossed axis). The worm screw is normally the driving element. Very high ratios from very slow to 100:1 can be realised with a worm drive with just one stage. Self-locking is possible depending on the ratio used. Other advantages of worm drives are the quiet running and low vibration.
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