top of page

Dutch Boy Grain Cleaners

Separates By Density Using Unique Air Flows

The Dutch Boy grain cleaning machines use unique air flows created by centrifugal force to separate good grain from almost any crop material. Seed cleaning using air flow is gentle. The air flow adjustment determines the cleaning action and its proper control is key to obtaining good results. A central diffusing element and a unique pattern of seed spreaders is also key. With the excellent design of the WS machine, grain cleaning quality is improved to almost twice that of most other similar machines on the market.

Regulating the air flow controls the separating action. Air is drawn up through the center tube in a unique pattern and exits out the exhaust. Anything less dense (weight and surface area) than the good grain will exit the machine through the exhaust. Even material that is heavier than the good seed may be taken out if its surface area is large enough. For example, wheat heads can be taken out even though they are heavier than plump kernels because its surface area is much larger.

Cleans Various Grains

The WS machines will clean many types of common grains such as barley, beans, corn, durum, hemp, lentils, maize, oats, peas, poppy, rape, rye, soybeans, spelt, sunflower, wheat and many more. After cleaning, the grain will be ready for storage, for planting or for grain burning furnaces. These cleaners have also been used for separating leaves from frozen fruit; sawdust from wood chips and small bits of wood and plastic from sand or bark.

Solution For Disease In Grain

Quality standards vary for cleaning grain depending on its end use. Harmful fungus and toxins such as vomitoxin, aflatoxin, fusarium, and ergot is harbored mostly in the chaff, the light seeds, and the cracked kernels. These diseases can easily double in a month when stored in slightly damp conditions. Removing this part from the good grain will lower the infection rate. The air flow through the grain will help dry down a high moisture crop. Cleaning tests with popcorn and spelt were conducted and the results tested by a certified lab. The popcorn was infested with a vomitoxin level of 11.2 which is unusually high. The spelt tested at 1.5 vomitoxin. After one pass through a WS grain cleaner, the popcorn tested at 1.8 and the spelt tested at 0.7.

Small Investment, Short Payback

It is easy to increase the value of your crop such as one farmer did in Saskatchewan. In 2016, he had 6,000 bushels of wheat that was contaminated with a high level of Fusarium fungus. It was rated as a grade 3 grain which was unfit for food or feed. The most that he was offered was $2.50/bu. Since the fungus consumes the inner part of the kernel, the thins, the lights, the cracks, and the fines are the most susceptible to this infection. After cleaning the grain with a WS machine, this part of the grain was removed which contained most of the fungus. The grain was then upgraded to a grade 1 and the offer on the wheat was $6.60/bu. This price difference was $4.10 per bushel which amounted to an increased value of over $24,000 for the crop. His Breakeven Point on the cost of the machine was reached in just a few hours of use. His Return On Investment (ROI) was great. His purchase added more profit to his bottom line for the year.

Modules available for purchase

Main Separator has 4 chutes

Surge Tank to collect surges of grain from your storage source.

Scalper to remove the largest trash material whose density is to high for it to be separated through the normal cleaning process.

Trough augers to collect the different separations of grain

Trailer frames to make grain cleaning equipment into mobile units.

New Screen Technology

It's hard to imagine not having a grain cleaner, but there are many reasons why farmers don't. For those of you who have been searching for a better way to clean seed with a grain cleaner, here is the solution! The Grains Research Institute has developed a new type of screen that can be fitted over both small and big screens and is designed to filter out the dust in the air while cleaning seed.


A regular screen will allow the tiny dust particles to fall back through the screen and come out with your clean seed. But this new screen allows these particles to pass through and fall into a tray that can be easily emptied during the cleaning process.

The new "Pollen Screen" is made of woven fiberglass strands and can replace all other screens on grain cleaners. It's designed to filter pollen, chaff, fine dust and mold spores from the air while seed is moved through a cleaning process.

No product

WS 100 Grain Cleaner


110 b/h

 3 T/h


46" X 30" X 48"

62 lbs



.25 kW

4.1 A

.33 hp


WS 1500b.jpg

Grading Seed Adds Value

Field trials have confirmed that using only the healthy, plump seeds for planting will increase yields up to 30% or more. An added benefit is that the crop will mature more uniformly and up to a week earlier. Grading out the heaviest, healthiest seed can be accomplished by performing a hard separation. Increasing the air flow will cause the lighter seeds, which are often the malnourished or diseased seeds to be separated from the healthiest, plumpest seeds having the highest test weight. Premium prices can be obtained for high value grain. The other separations can be used for feed or sold as a lower grade grain.

​Consistent, Efficient, User Friendly

​Because these machines have no screens to clean, it’s hard to beat their consistency and efficiency. The settings for different crops can be changed in a few seconds. Grain cleaning machines using screens are often slow and complex to operate which was best accomplished by a professional custom grain cleaning operator. Choosing the correct screens using those machines is a continuous process because the kernel size of grain may vary from year to year or even from different areas of the same field in the same year. This variation is caused by differences in weather, soil fertility, and plant health. Screens must be cleaned regularly to maintain consistency and becomes an ongoing, arduous task. Cleaning your own grain for seed like a pro is now possible for the average Joe. Best of all, these WS machines are very user friendly and crazy simple to operate!

No product

WS 2500 Grain Cleaner


2400 b/h

 70 T/h


56" X 83" X 84"

395 lbs



4 kW

14 A

5.0 hp


$11,000 w/o Motor

Shor more WS Grain Cleaner

DB Grain Cleaner Gallery

Award Winning Performance

The inventor 

bottom of page