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The positive linkage PIV CHAIN CONVERTORS Variable Chain Drives between chain and gear wheel permits constant speeds despite having torque fluctuations and very good reproducibility of speeds. Standard variable gear devices force the transmission component by applying excessive force – that is unnecessary and reduces the degree of efficiency.

Adjustable chain drives apply a lever system, which applies just as much pressure on the slat chain as necessary. This results in low operating temperature ranges, long life, high power density and an excellent efficiency – also in the partial load range.