top of page

WS Grain Cleaners

Unique Air Flows Separate Material By Density

The Sosnowski [sos NOW ski] WS grain cleaning machines use unique and gentle air flows created by centrifugal force to separate good grain from almost any foreign crop material. The air flow adjustment determines the cleaning action and its proper control is key to obtaining good results. A central diffusing element and a carefully placed 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 air 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, canola, 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 grain cleaners have also been used for separating leaves from frozen fruit. Recycling and other industrial operations are using these machines to separate and size materials like plastics, glass, foam, wood chips, sand, etc.

WS Grain Cleaner Seed Spreaders
WS 350 Grain Cleaner
WS 350 Grain Cleaner
WS 750 Grain Cleaner
WS 750 Grain Cleaner
WS 1500 Grain Cleaner
WS 1500 Grain Cleaner
WS 1500 Grain Cleaner

​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 with a WS Grain Cleaner for seed like a pro is now possible for the average Joe. Best of all, these machines are very user friendly and crazy simple to operate!

WS 2500 Grain Cleaner
WS 2500 Grain Cleaner
WS 2500 Grain Cleaner
WS 3500 Grain Cleaner
WS 4500 Grain Cleaner
WS 4500 Grain Cleaner

Compact, Durable & Maintenance Free Design

The WS machines can be set up almost anywhere. This will reduce seed, herbicide, and transportation costs saving you time, money, and frustration. Their footprint is small. They can be integrated permanently into grain handling systems. Mounting them on small trailers or on a frame with castors will keep the unit mobile.

The fan is mounted directly on the motor and is the only moving part on the machine. There are no lubrication points and no spare parts are needed.

One company used a WS cleaning machine in 2013 to separate plastics. It was used 24/7 for two years non-stop including holidays and weekends. The third year it ran 12 hours a day, five days a week. It has operated with no down time during that time period.

Some operators who already own a good screen machine will purchase a WS grain cleaning machine and set it up to pre-clean grain before it runs through a screen machine for the sole purpose of speeding up the cleaning process. Much time is saved when screens don’t need to be cleaned as often.


If settings on the harvester leave a lot of large trash in the crop material like thistle seed heads, long straw stems, large insects, the crop needs to be run through the grain cleaner at a slower rate. The momentum of a strong grain flow will tend to drag foreign material along down with it. Slowing down the grain flow will give the machine the best chance of separating out these bulkier items. The speed of cleaning will also depend on other factors such as the amount of foreign material in the grain, moisture content, & quality requirements.

Choosing A Size To Match Your Need


The WS Grain Cleaner models are sized for the hobby farmer to large commercial operations and everyone in between. They come in capacities of 100 to 4500 bushels per hour. 

Sizing a machine for your budget is easy with 7 model choices: 100, 350, 750, 1500, 2500, 3500, 4500.


Results are the same with each model. Usually each of the models are in stock ready to ship unless sales are better than expected. 

Do you need help deciding which WS model you need?

Consider these three criteria:

1. Quantity of grain to clean

2. Amount of time to clean it

3. Quality requirements

Running these machine at full capacity will remove most of the dockage. Operate at 50% of capacity or less if cleaning for food or seed.

Contact a certified associate advisor today.

WS Grain Cleaner Gallery

Award Winning Performance

The inventor of the WS Grain Cleaner, 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. This machine carries a total of 18 patents.

bottom of page