Combine sieves

A combine sieve is a type of sieve used in agriculture to separate the harvested grain from the chaff and other plant debris. It is an essential component of a combine harvester, which is a machine that performs several operations, including harvesting, threshing, and winnowing. The combine sieve is responsible for separating the grain from the chaff and other debris before it is collected and stored.

The combine sieve consists of several layers of screens or meshes that are arranged in a series of layers. Each layer has a different size of mesh or screen, and each layer performs a specific function. The grain passes through the screens, while the chaff and debris are removed and collected in a separate compartment.

The first layer of the combine sieve is the concave, which is a curved metal plate with slits or perforations that allow the grain to pass through. The concave is designed to thresh the grain, separating it from the straw and husks. The concave also helps to break up the straw and husks into smaller pieces, making it easier for them to be separated from the grain in the next stage.

The second layer of the combine sieve is the top sieve, which is a flat mesh or screen that allows the grain to pass through while retaining the chaff and debris. The top sieve also helps to separate any remaining straw or husk fragments from the grain.

The third layer of the combine sieve is the bottom sieve, which is a larger mesh or screen that allows the chaff and debris to pass through while retaining the grain. The bottom sieve helps to remove any remaining plant debris and chaff from the grain before it is collected.

The combine sieve is operated by a series of rotating shafts and belts that move the grain and chaff through the different layers of screens. The grain is first threshed by the concave and then moved onto the top sieve, where it is separated from the chaff and debris. The remaining chaff and debris are then moved onto the bottom sieve, where they are separated from the grain before being collected and discarded.

In summary, the combine sieve is an essential component of a combine harvester that separates the grain from the chaff and other debris. It consists of several layers of screens or meshes that are arranged in a series of layers, each with a different size of mesh or screen, and each performing a specific function. The combine sieve is operated by a series of rotating shafts and belts that move the grain and chaff through the different layers of screens, resulting in a clean and separated harvest of grain.

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Our products are result of long-term work. They feature a number of innovations and improvements what provides durability, ease of adjustment and reparability, effective harvesting and reasonable price.

We offer 5 different types of sieve fingers: PW1 - PW2 - PW3 - PW4 - PW5. Each of them is designed to offer you the highest cleaning quality!

Available for Claas / Lexion, John Deere, Case IH, New Holland,  Massey Ferguson combines and are replaceable to the OEM.

Combine sieves

PW1 - standart upper sieve
PW2 - long finger upper sieve
PW3 - standart short finger lower sieve
PW4 - Claas Lexion TM6 sieve type

Advantages and results:

  • Increased service life. Reinforced sieve frame and special design extend durability by 50%.

  • Easy to install. The overall and installation dimensions correspond to the original details, that is, the sieves can be installed on the combine without any improvements and modifications.

  • Maintainability. Every Agroparts sieve is collapsible. You can easily take them apart for repair and cleaning at the end of the season.

  • Better grain cleaning! With Agroparts sieves, you will reduce grain losses and improve harvesting quality, thereby increasing your combine harvester productivity by 10-15%. Grain quality and purity guaranteed!

Compare aftermarket sieves

Small grains sieves without the airfoil effect of a TM6. That is multi-purpose sieve.

Effective in:

  • Soybeans
  • Edibles
  • Sunflowers
  • Low yielding corn
  • Cereals
  • Small grains

Not recommended:

  • Limited opening has potential to reduce capacity in high yielding crops

Premium corn sieve. Finger length 32 mm.

Effective in:

  • Corn
  • Soybeans
  • Edibles
  • Sunflower
  • Cereals

Not recommended:

  • Not recommended for use with small grains. Wide opening can encreae large particles in grain sample.

Bottom sieve for corn/bean machines. Only available as lower sieve

Effective in:

  • Corn
  • Soybeans
  • Edibles
  • Sunflower
  • Cereals

Premium sieves (upper and lower) for small grains and canola

Effective in:

  • Soybeans
  • Edibles
  • Sunflowers
  • Cereals
  • Small grains
  • Micro seeds

Not recommended:

  • Corn. Fibers and silks have the potential to hair-pin on the foils and may cause the sieve to plug
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