Harvest Clean

- Model 4 - Mobile Agricultural Grain Cleaning Screening and Scalping Machinery


HARVEST CLEAN are pioneers in the design and manufacture of mobile agricultural grain cleaning grain screening and scalping machinery. HARVEST CLEAN's flagship product, GEBERT 4 is an efficient grain cleaning / screening and scalping unit designed for solutions to frost affected crops, small and oversized grains and other impurities within harvested crops. The GEBERT 4 will maximize returns on grains and will ensure high returns for grains such as barley and canola. HARVEST CLEAN designed Gebert 4 with a revolutionary “scalping” system that allows the separation of small grains and then oversized grains and other particulars in a on pass operation. The GEBERT 4's one pass operation can accommodate many types of grain by the use of simple and easy to change perforated screens.

  • Large screening capacity – in excess of 22 square metres
  • Large field bin in excess 15.5 tonnes
  • Hydraulic drive system
  • Four large rotors that can screen only or be configured to screen and scalp
  • One motor will drive all operations via the hydraulic system
  • Feed-out augers will deliver to over 4.5 metres
  • Strong frame that allows the GEBERT 4 to be easy to tow
  • Rotors accommodate three easy to change screens


Harvest Clean also manufacture and supply screens to suit any cleaning machine for wheat, barley, canola, lupins, field peas plus all other specialty grains. With expert advice on slot and round hole size of screens to maximise the profits earned on each crop.


1. Screening and Scalping System

Four big rotor chambers The GEBERT 4 can be operated as a pure screening machine and produce high capacity removal of under sized grain and impurities.

It can also be configured as a screening and scalping machine. This will allow the removal of small and undersized grains and impurities in the same one pass operation to also allow the removal of oversized materials. The producer does not have to run all grains through the machine to achieve this level of grain cleanliness.

Screens can be configured to suit the grain types grown.


2. Maximise Your Barley Crop

Maximise your barley crop this season and invest in a grain cleaner which can pay for itself in the first season.

Grain producers have to deliver a “malt” grade barley to their grain receival depot (such as CBH) to achieve premium prices. Harvest Clean can deliver this goal through the Gebert 4. The Gebert 4 offers very high screening throughput levels and ultimately transforms feed grade quality to malt grade.

The reward is a premium payment to the grain producer at an estimated $45 - $100 per tonne in a year, and a new machine in the long term*.

3. Hydraulic drive system

This system allows all the drives on the GEBERT 4 to be each powered by a hydraulic motor, all motors are powered via a hydraulic pump from one engine. The hydraulic motor that runs the four screening rotors has a variable drive to allow the variation of turns per minute for the rotor system.

The hydraulic system allows very low maintenance and high levels of safety to be achieved.

4. Air system

The air system on the GEBERT 4 is a suction method of drawing light weighted materials from the sample leaving the field bin. The air system is configured before the rotor system to maximize the efficiency of the rotors screen removal.

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