Passive Components


Shaft encoder for desert operation

17 October 2012 Passive Components

Wachendorff Automation is expanding its range of industrial-strength hollow-shaft encoders. The new WDG145H of protection class IP64 has a housing diameter of 145 mm and a maximum hollow-shaft diameter of up to 72 mm.

The challenge when sealing larger diameters is the optimum combining of several influencing factors. These include the selection of the correct sealing material, the development of an intelligent sealing geometry with appropriate chicanes and lips, and the design of a suitable surface finish of the rotating shaft.

After construction, Wachendorff subjects the prototypes to intensive qualification and comprehensive stress tests principally in the company’s own environment simulation laboratory and with external testing institutions. For the WDG145H, the tests were carried out based among other things on DIN 40 050 Part 9 and/or ISO 20653 with Arizona dust (fine grade) SAE J726 conforming with ISO 12103-1 A2 and the test specimens passed successfully.

Besides many other possible areas of application, the encoder can be utilised for applications on open-air sites anywhere in the world, eg, with solar trackers the encoder can greatly increase the efficiency of the solar plant because the steering can continuously and precisely reposition the solar panels at the optimum angle to the sun.

Also, lifts that are subject to harsh environmental influences, eg, in pleasure parks or on construction sites, can run more smoothly with this encoder, can be optimally controlled in speed and more precisely moved into position.

For more information contact Edwin Brown, Vepac Electronics, +27 (0)11 609 7122, [email protected], www.vepac.co.za



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