Posted to News on 28th Aug 2007, 19:55
Renold Gears to show dual-lead worm gear sets at EMO
Renold Gears has long been known for high-quality power transmission equipment, the roots of which can be traced back to the John Holroyd company that was established at the beginning of the 20th century.
Although the original John Holroyd company was taken over by Renold in the early 1960s, the world-renowned quality of the worm gears has remained, and today is at the forefront of high-precision machine tool worm gears.
Still manufactured at the same factory in Milnrow, north of Manchester, Renold Gears' Holroyd dual-lead worm gear sets are well suited to use in positional machinery, as they provide a kinematically correct gear that can run in either direction of rotation and on which the backlash is infinitely adjustable from an acceptable maximum to zero.
The gears are manufactured in matched pairs and the mounting diameters are designed to fit to the customer's specific requirements.
Transmission testing of the profile of the gears - in a way that is claimed to be unique - ensures a constant gearing contact throughout its full rotation. This comprises a continuous measurement of the angular position of the driven wormwheel relative to where is should be with a perfect gearset while the driving worm rotates at a uniform rate. The test measures and records pitch and eccentricity errors, and also the profile errors of the active part of the profile.
Renold Gears supplies precision gears for positional indexing and rotary table drive manufacturers and is exhibiting at the German EMO show in Hannover from 17-22 September 2007 with the aim of becoming better known by machine builders both in Germany and overseas.
The company can be found in Hall 6, stand H46.
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