The standard pre-stretchers which hold a 750 mm roll, are made of aluminum to avoid build-up of tack from the film. Both outer ends of the aluminium rollers are cone shaped to maintain the optimum width of the film and reduce the risk of film tear. The special ribbed profile of the aluminum rollers keeps air and water away from the film. The location of the pre-stretchers makes it very easy to change the film rolls. The standard pre-stretch of 70% is reached by a low-maintenance and low noise gear transmission.

Besides a standard single stretch, DEUTZ-FAHR introduces the all new WM series with patented* e -Twin system for excellent cost efficient fast wrapping. The innovative e -Twin technology enables wrapping via an unique combined pre-stretcher design with patented* film distribution to save 50% on wrapping time and further film savings. The conical pre-stretch rollers have been positioned in such a way that the two 750 mm film wraps with 2/3 overlap are glued together providing a double layer before they leave the pre-stretcher unit.

Depending on model and user preference, two different control system are available. On machines with manual control (M), the machine is controlled with cable levers. This system may also be complemented with a bale/wind counter and an automatic stop function. The computer controlled version (C) features a control unit providing all the necessary information and is capable of performing the entire bale wrapping process automatically.

The WM 4044 is ISOBUS compatible. ISOBUS compatible tractors will therefore not require a separate control box for the wrapper. The CCI 800 or 1200 monitor can be used with tractors that are not ISOBUS compatible. Operator settings, such as selecting pre-defined bale dimensions and switching from transport into field mode, are accessed via the monitor. Information, such as wrapping process overview and number of bales, is also provided.