KRM launches IsoBus fertiliser spreader with belt feeding system

The new Bredal F4W spreader sees fertiliser metered by two individual 200mm wide feed belts from the hopper to each disc. Using this ‘positive’ feeding system, it eliminates the need for agitation, according to the manufacturer, which may cause damage to softer prilled materials, in addition to providing a more accurate feed rate to each disc.

The company says a wide range of products can be metered including prilled and granular fertilisers, straights, blends and more difficult materials such as salts, which cannot be handled by conventional gravity feed machines. It adds consistent application rate is ensured irrespective of changes in humidity, weather conditions, slope or quality of material.

For precise metering, each belt is individually driven by a hydraulic motor. Material is then directed to a precise position on each disc, for the required rate and spread width, by two stainless steel down-chutes, each adjusted by a sealed electric actuator. Belt drive and down-chute actuators are controlled by an IsoBus job computer, compatible with all IsoBus systems which conform to ISO11783.

The Bredal ISO display allows the operator to select any application rate, at any spread width and for any material directly from the tractor cab. It also enables adjustment of rate on the move and provides warning functions for floor belt drive and disc speed. The IsoBus system is GPS variable rate ready to follow application maps.

For spreading, two 800mm diameter discs are driven either from the tractor pto through the Bredal twin V-belt drive system, or by an individual hydraulic motor for each disc. Discs spin towards each other to provide a double, double overlap spread pattern with tolerance at working widths from 12m to 40m dependent on material. Carbide coated vanes give high wear resistance - up to three times longer than stainless steel, the manufacturer adds.

To meet the latest environmental standards for headland spreading, a reduction gear system has been fitted to one spinning disc drive. Operating a single lever reduces the speed of the disc toward the headland by half to produce an adjustable, sharp cut-off at the field boundary, without affecting the spread pattern into the field. If hydraulic driven discs are chosen, then the left or right disc can be selected from the tractor seat for headland spreading.

Hopper capacities range from 1,500 to 4,000 litres, made up of a choice of powder coated or stainless steel hoppers.

Standard specification includes weigh cells to monitor the hopper contents with integral tilt sensor for accurate weight reading even on slopes.

With delivery available in spring 2021, prices for the new spreader start at £23,450.