As the only manufacturer worldwide, Berges can offer both symmetrical and asymmetrical pulley drive technology.
Asymmetrical control-cam pulleys on the output side are equipped with a torque-dependent pressure device, which automatically and permanently ensures the optimal axial pressure of the V-belt. This prevents the belt from slippage in shock and overload operation or when starting the machine and protects the belt in normal operation to enhance its durability at the same time.
Asymmetrical Control Unit RF, RFN for engine power 0.37 – 45 kW, consisting of: Mechanically adjustable control pulley R with integrated central adjustment device a) spring-loaded pulley F b) Type FN with increased pulley diameter for lower output speeds The axial pressure on the V-belt is achieved by compression springs. This drive system is characterised by high dynamics when the rotational speed changes. It can be used for reverse operation as well.
Asymmetrical Drive type GF, for engine power 1.1 – 45 kW consisting of: fixed counter pulley G (mounted on motor shaft) spring-loaded pulley F (is to be mounted on the machine or gear shaft)The axial pressure of the V-belt is achieved by compression springs, the characteristic curves of which are dimensioned optimally. The rotational speed is adjusted by changing the centre distance using a motor slide. Speed adjustments possible for control range 1: 3. This system provides an almost constant power for the entire control range.
Asymmetrical Drive type RK, RKN for engine power 4 – 150 kW, consisting of: Mechanically adjustable control pulley R with integrated central adjustment device a) Control-cam pulley K, with automatic torque-dependent pressing device b) Type KN with increased sheave diameter for lower output speedsThis drive system features a high level of efficiency even in the partial load range. The system is suitable for high starting torques and offers excellent overload safety.
Asymmetrical V-belts have a lower belt volume and thus an even higher transverse rigidity and less heat development, which results in a higher durability and longer lifetime. The basic structure corresponds to the same quality standards that we are expecting from the symmetrical V-belts as well.
Asymmetrical Drive type FG, for engine power 0.75 – 45 kW consisting of: Spring-loaded pulley F (mounted on the motor shaft) fixed counter pulley G (is mounted on the machine or gear shaft)The axial pressure of the V-belt is achieved by compression springs, the characteristic curves of which are dimensioned optimally. The rotational speed is adjusted by changing the centre distance using a motor slide. Speed adjustments possible for control range 1: 3. This system provides a high torque at lower output speeds.
Asymmetrisches Regelgetriebe RF, RFN für Motorleistung 0,37 – 45 kW, bestehend aus:
Die axiale Anpressung des Keilriemens erfogt durch Druckfedern, deren Kennlinien optimal dimensioniert sind. Dieses Antriebssystem zeichnet sich durch hohe Dynamik bei Drehzahländerungen aus, einsetzbar für Reversierbetrieb.
Asymmetrische Regelgetriebe Typ GF, für Motorleistung 1,1 – 45 kW bestehend aus:
Asymmetrisches Regelgetriebe RK, RKN für Motorleistung 4 – 200 kW, bestehend aus:
Dieses Antriebssystem zeichnet sich durch einen hohen Wirkungsgrad selbst im Teillastbereich aus. Das System ist geeignet für große Anlaufmomente und bietet eine hohe Überlastsicherheit.
Asymmetrische Keilriemen verfügen über ein geringeres Riemenvolumen und damit eine noch höhere Quersteifigkeit und geringere Erwärmung was eine höhere Belastbarkeit und längere Standzeiten zur Folge hat. Der grundsätzliche Aufbau entspricht den selben Qualitätsstandards welche wir auch an die symmetrischen Keilriemen stellen.
Asymmetrische Regelgetriebe Typ FG, für Motorleistung 0,75 – 45 kW bestehend aus:
Die axiale Anpressung des Keilriemens erfogt durch Druckfedern, deren Kennlinien optimal dimensioniert sind. Die Drehzahlverstellung erfolgt durch Achsabstandsveränderung mittels Motorschlitten. Drehzahlverstellung im Regelbereich 1 : 3. Dieses System bietet ein hohes Drehmoment bei niedriger Abtriebsdrehzahl.
