The base compound consists of a polychloroprene rubber with fibres inlaid transversely to the running direction. The high quality and extremely low-stretch tension cord of polyester or aramid is embedded into a rubber cushion compound.

It is effectively supported by a fabric outer surface and by the base compound. The base compound provided with its incorporated transverse fibres provides transverse rigidity without sacrificing flexibility.

Optibelt VARIO POWER variable speed belts are preferably used for infinitely variable speed control. The special belt structure allows high dynamic loads, a superior power transmission capability and good control characteristics.

Also available as double-sided belt.


  • high power ratings
  • long service life
  • smooth running even at high speeds
  • high flexibility
  • optimised heat dissipation


belt top widths from up to 100 mm belt thickness from 5 to 30 mm


range of lengths from 500 to 5,000 mm standardized dimensions according to DIN/ISO and RMA/MPTA American standards