Grain Cleaner Information

Sosnowski Grain Seed Cleaner

The Sosnowski machines are unique because they use centrifugal force for the separating action. Unlike the complex process of seed cleaning machines using screens, the operation of the Sosnowski [sos NOW ski] machine is very simple and user friendly with only two controls: air flow and grain flow. These two adjustments determine the cleaning action. A central diffusing element inside the cleaning tube is also key and improves the cleaning quality to almost twice that of most other similar machines on the market. This machine carries 18 patents and has only one moving part: a fan blade attached directly to the motor shaft.

Multiple thousands of these machines have been sold in Europe and operate without fail. The cleaning machines are about as tall as an average size person. 

                           This is the 330 model.

This machine will clean many types of common seed such as barley, spelt, rye, wheat, oats, maize, corn, soybeans, sunflowers, rape, peas, dry beans, nuts, etc. After cleaning, the grain will be ready for storage, for seeding or for grain burning furnaces. The cleaners have also been used for separating the stems and leaves of mint; leaves from frozen fruit; and small bits of wood and plastic from sand and bark.

When the motor is engaged on the Sosnowski machine it activates centrifugal force to separate the good seed from dust, chaff, cracks and malnourished light seeds which are often infected with fungus or disease. Harmful fungus and toxins in grains inhabit more of the light or cracked kernels and dust. These diseases can easily double in a month when stored in slightly damp conditions. Separating the good grain from the undesirables will remove a large portion of these toxins. A trial with popcorn and spelt was conducted and the results tested by a certified lab. The popcorn was infested with a vomitoxin level of 11.2 which is unusually high. On the first run through this cleaner, it tested at 3.2 and the second time through it tested at 1.8. The spelt tested at 1.5 vomitoxin before cleaning. After the first pass through the cleaner it tested at 1.1 and the second time through it tested at 0.7. The chaff, the cracked, the malnourished thins, the diseased lights, along with the smaller/lighter weed seeds are most often what needs to be removed from the good seed. The Sosnowski grain cleaner will accomplish this task with blue ribbon performance.

This shows the seed spreaders in the center tube. 

The more thorough the desired cleaning, the slower is its rate of efficiency in bushels per hour. If there was a combine problem with a lot of heavy trash in the grain like thistle seed heads, long straw stems, large insects, etc the grain needs to be run through the cleaner slowly to give the cleaner the best chance at separating these heavier items from the grain. The key word here is density. The foreign material may be heavier than your good seed but the cleaner may still be able to separate it if the surface area is large enough. If the density of the foreign material is less than the good seed, very likely it will be separated if the momentum of the grain flow is slow enough so that it isn’t dragged along down with the flow. As a rule of thumb, results will be satisfactory when the grain flow is at full capacity when storing grain grain or burning in furnaces. To clean grain for planting through a drill, a rate of 60% or less of capacity is recommended.

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 Sosnowski machine, this part of the grain was removed which contained most of the fungus. The grain was then upgraded to 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.  

When using a screen machine, choosing the correct screens can be challenging because kernel size can vary from year to year or even from different areas of the same field. This variation is caused by differences in soil fertility and plant health. Cleaning the screens regularly to maintain consistency becomes an arduous task. With no screens on the Sosnowski machine to clean, it’s hard to beat their consistency and efficiency. Cleaning your own seed like a pro is now possible for the average Joe. It will reduce seed, herbicide and transportation costs saving you time, money and frustration. Best of all, it is absolutely user friendly and crazy simple to operate!   

The inventor which also manufactures these machines has won numerous awards including a gold medal at the 50th World Exhibition of Innovation, Research and New Technology Eureka in 2002 and a silver medal at the 51st World Exhibition of Innovation, Research and New Technology Eureka in 2003 in Brussels Belgium, a bronze medal in Jena - Nurmberg Germany in November 2006, in Geneva Switzerland in April 2007 and a distinction in Canada's Farm Progress Show in 2015.

We learned that it is a slow, frustrating process to clean seed with a conventional grain cleaner which uses screens. In 2015, we spent over $16,000 to purchase a well known brand of grain seed cleaner that featured four large 42” X 36” screens along with a top aspirator that removed preliminary trash before the seed fell onto the screens. A large fan provided a separation of the light material from the good grain. It also featured a ball and rack system plus a knocker system to help keep the screens clean longer. The screens had to be cleaned frequently anyway. After just a few minutes of cleaning grain the cleaning action was lost. The cracks, the fines, the thins and other foreign material still plugged the holes quickly. The “cleaned” wheat seed from this screen machine is shown in the picture marked with a “1”.  












If you examine it closely you can see cracked, thin and diseased seeds along with some chaff still in the grain.  

As a test, one ton of this “cleaned” wheat was put through a Sosnowski grain seed cleaner. A hard separation was done. A 100 lb used feed bag was attached to the exhaust to collect the winnowings. The bag was full when the job was finished and can be seen below in the picture marked with an “F”.  















The winnowings were dumped on a pile. This is shown in the picture marked with a “2a” and a closeup is shown in the picture marked with a “2b”.  






















There were very few cracks, thin, or light diseased seeds to be found in the cleaned grain after this process. The re-cleaned seed is shown in the picture marked with an “S”.  












Seed Cleaner Operation

To begin a seed cleaning operation with a Sosnowski machine, set the grain flow control at the 1/2 position and the air flow control to the completely open position for corn and beans, at the 3/4 open position for wheat and rye, and for oats, it's at the 1/2 open position. Turn the machine on. Pour a small amount of grain into the hopper. Examine the winnowings that exited through the exhaust and the good grain that fell down through the center tube.

Adjust the air flow and grain flow controls and repeat this process until you are satisfied with how the grain is being separated.













Increasing the air flow will remove more winnowings. Decreasing it will remove less. 

Once this adjustment is set satisfactorily, begin a continuous grain flow. Adjust the grain flow so there is always grain in the hopper. This will maximize the efficiency of the cleaning quality because the air is forced to come up through the tube and not just through the hopper. Continue to monitor the separating process and make minor adjustments as needed. A larger grain flow may need a bit more air flow to obtain the same results. 


Additional Information

Click on the links below for learning more about these seed cleaning machines.

       * Specifications

       * Purchasing 

       * Setup