Gateway Combine Sieves and Combine Chaffers

Improving Combine Sieve and Combine Chaffer Performance

Lighter Weight—Better Performance

The patented design of the Gateway® combine sieve and combine chaffer system utilizes aluminum and plastic modular construction to provide optimized combine performance and improved grain cleaning. The construction of the Gateway makes it significantly lighter than standard combine sieves and combine chaffers, reducing the wear on cleaning shoe bushings and bearings, extending their life, and reducing combine downtime.

The plastic slats also provide added lubricity for improved crop flow and prevent crop buildup, particularly in near-freezing temperatures when all-steel combine sieves and combine chaffers are prone to reduced crop flow. Unlike conventional combine sieves and combine chaffers that are nearly impossible to repair, the modular design of the Gateway makes on-farm repairs easy and economical.

Why Spacing Options?

Narrow Spacing (33mm): Used for small grains: wheat, alfalfa, and cereal grains; 33ST top 33ST bottom.
Wide Spacing (45mm): Used for large crops: corn and soybeans; provides faster operation through high-yielding crop; 45LT top 33ST bottom.

  • Better combine performance
  • Improved grain cleaning
  • Clean heavy and lighter crops
  • Easy on-farm repairs


  • Lighter weight for reduced wear, longer life, and reduced downtime
  • Added lubricity of plastic slats improve crop flow, particularly in near-freezing temperatures
  • Adjustable slats for maximum cleaning performance and capacity
Gateway Combine Sieves offer two slat design options to fit your crop needs. The 7/8” LT (top) and 3/8” ST (bottom) are available with 33mm or 45mm spacing. Slat connectors are durable and provide reliable adjustment consistency. All components are
replaceable for quick and economic repair.
Slat opening is uniform and repeatable. The number of adjustment controls will match most units.  



Check out the media available for Gateway Combine Sieves and Combine Chaffers up close in the gallery.

Gateway Combine Sieve Testimonial

Tim Seifert of RTS Farms in Auburn, IL discusses the benefits of the Gateway Combine Sieve on his 2,800 acres of corn and soybeans.

Watch Gateway Combine Sieve Testimonial

See the Gateway Combine Sieves and Combine Chaffers up close in the gallery.


Want more information on the Gateway Combine Sieves and Combine Chaffers? Here are some helpful downloads.