Becker Asymmetric Series
  
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Becker Asymmetric Series

The decisive advantages of
variable speed drive technology -
The Becker System

Figure 1 Figure 2
The tractive forces of the belt are exerted more directly on the shaft bearings. The bending moment affecting the free shaft ends is very low, and does not alter when the pulleys are adjusted. This is due to the fact that the asymmetrical system has one taper disk of only 2° whose axis is stationary, and another of 18° whose axis is movable. Compared with taper disks with equal angles, assembly and alignment are especially simple. Becker asymmetrical variable speed drives align themselves more or less automatically. The alignment can be checked by simply laying a ruler on the back of the 2° taper disk.

Figure 3

 

Asymmetrical wide V-belts are used according to the various angles of the taper disks. The asymmetrical Becker V-Belts have a lower volume than those of conventional systems. This means: higher lateral rigidity, lower centrifugal forces, less interior heating, i.e. greater toughness and thus longer life.

Figure 4
The driven pulley with torque characteristic has an ingenious contact pressure device which is torque dependent. Depending on power transfer, this ensures that the optimum axial contact pressure is exerted automatically and permanently on the V-Belt. The greater the torque, the greater the contact pressure. This means that the belt doesn't slip during intermittent operation, under excessive load or when the machine is started with high flywheel effect (WR2). These features of the system guarantee very high efficiency (even under partial load) and longer belt life.