mod. XJ structure that can be hydraulically lowered

The energy required to rewind the hose is the decisive element in the economy of the self-propelled irrigation machines: RM Turbo-Reducer Unit with in-built water By-Pass and four-speed gearbox drastically reduces pressure losses during the irrigation phase, thus ensuring money saving determined by less energy consumption.      

The design of the turbine impeller is the result of a cutting edge aerodynamic calculation which allowed reaching an extraordinary channelled flow of the liquid without any turbulence, thus ensuring the operation with a minimum pressure of 1.5 bar at machine inlet. The quality of the Turbo-Reducer Unit is obtained by using all the movable internal parts in stainless steel, such as all bearings (including the ones of the turbine axle) in class A dipped in oil bath.

The system includes a built-in automatic brake that engages during hose unwinding and disengages during rewinding. Moreover, at the end of rewind the Turbo-Reducer positions the “Operation-Stop” lever to the correct position for the following hose unwind.

The exclusive RM Power Save™ system allows for a practical, quick speed change even during the normal hose rewind with water under pressure, thus immediately reducing the turbine rotational speed without having to act on the electronic programmer controls.

RM Turbo-Reducer Unit does not require any periodic maintenance. Moreover, at the end of sprinkling process every liquid residue is automatically ejected from the turbine body.

Another remarkable characteristic of RM hose-reel irrigation machines: starting from the 581 Gx Evo model the drive between turbo-reducer and reel is manufactured with high-tensile strength ARNOLD STOLZEMBERG^® chain with extruded rollers and without extension.

Moreover, by using the adjustable toothing (another exclusive of RM) located in the outer reel diameter, a very high transmission gear ratio is created between the wheel and turbo-reduction gear in order to drastically reduce the energy absorption for rewind as well as the turning moment in the reduction gear output shaft, thus preserving its duration in time.

Reel mass with its hose in polyethylene wound and filled with water reaches 80% of machine weight.

Supports on which reel rotates are subject to very high loads, thus generating high frictions, which must be minimized in order to reduce the effort required for the movement.                 

RM reel axle is:    

1. Supported by large diameter rolling-element bearings that cancel frictions (1);   
2. Protected by an interchangeable stainless steel compass (2) on which lip seals operate, thus ensuring that it lasts long even in the presence of aggressive fluids such as sludge.                       
3. Aided maintenance: when lip seals are worn out, they can be replaced in a few minutes.

RM electronic programmers were designed to be perfectly built into the irrigation machine. They are simply to use and feature an intuitive, multilingual display; it can be easily bypassed without interrupting the machine irrigation cycle in order to switch from automatic to manual operation. Electromechanical drain and/or shut-off valves, GSM modem, solar panel for battery and anemometer recharge are available as optionals. The optional additional gun of rewind end can be controlled as well.

AN EXCEPTIONAL GRIP by means of height-adjustable towing hitch eye

All the XJ and XJM models are fitted with the towing hitch eye whose height can be adjusted through simple gudgeon pins.

Starting from the 581Gx model the reel resorts to the multi-section ribbed technology fitted with sides completely made up of high strength DOMEX 420™ sheet with yield load to 420 kg/mm², made up of wedges precut by means of HD Laser system and then assembled through robotic welding. This leads to a high resistance to bending stress, despite the reel lightness, and to an increase by 300% of the PE hose supporting surface on reel sides  - a remarkable advantage compared to the outdated system of side tubular tires. The internal ferrule is made up of calendered flat sheet, which helps preserve, then extend the duration of the polyethylene hose in the course of time.

All the machines of the XJ and XJM series fitted with double axle with isodiametric wheels feature the asymmetrical rocker arm. This solution allows for a remarkable reduction in towing on rough soils, which – accompanied by a reduced side overall dimensions – also ensures a better distribution of weight during the steering phase, thus making the machine handier than the axle. Machines can be fitted with different size tyres, among which those having a “Big Size” type big section. Nitrogen-charged shock-absorbers – supplied as standard starting from the 900 model – improve the absorption ground unevenness and reduce bar pitching during towing.