Product Description


Silent move light circumferential belt measuring unit for heights up to 120 metres (393.70 ft).

  • Quiet and non-slip digital shaft copying for universal mounting on a lift cabin.
  • Use up to speeds of 4 m/s (800 ft/min).
  • Particularly quiet and smooth-running, thanks to special belts and low-noise suspension.
  • User-friendly, reliable alternative to switches and sensors.
  • Fast and flexible installation with complete set of mechanical parts


Wachendorff is well known as an established producer of incremental and absolute WDG and WDGA encoders. Wachendorff has developed a series of shaft copying systems based on special belts. All necessary installation parts are included for quick and easy mounting in the shaft.

The systems can be delivered as a circumferential or guided belt system. One of the main benefits is the use of a special nubbed and tooth belt. In combination with the special wheels they work extremely smoothly and quietly in the shaft, including at high speed.

  • Speed up to 4 m/s and heights up to 120 m
  • Delivery includes all mechanical parts for mounting in the shaft
  • Improved lift motion profile and gentle stop
  • Longest operating life
  • Resistant to typical contamination in the shaft
  • Maintenance free, e.g. no talcum powder necessary for the belt
  • Only one reference drive necessary after installation in the shaft


For detailed specifications, refer to the WDGMSMZ Data Sheet in Downloads or visit the manufacturer's website.


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