Technical Specifications


  • To classify the size of agricultural grains such as coffee, beans, pepper, and so on after separating the material from impurities, rocks, and metal pieces.
  • The screen surface is automatically cleaned due to the rubber balls bouncing inside the grader machine’s frame.
  • Depending on the size that needs to be classified, the mesh hole size can be changed to fit its requirement.
  • No dust was generated during the grader equipment’s operation.


  • The grader machine operates according to the size of grains based on the principle of downstream movement, from high to low according to the vibrating frequency of the screen and the size of the mesh hole of each screen placed in the frame.




Model Capacity (ton/hour) Power (kW) Dimension (LxWxH, mm)
KT – 6S 4 – 6 2.2 6058 x 2400 x 3150
KT – 12S 8 – 12 4 8000 x 2600 x 4500


  • Dust tight design
  • Outlets allow manual packaging or interconnecting with the next operations
  • Low mixing ratio
  • Modern technology
  • High durability
  • Easy to operate
  • Electricity saving
  • Improve processing efficiency for the whole system
  • Minimize labor workforce in the processing line


Frequently Asked Questions

How can I take a quick look of the VNT's dust-tight size grader?

Vina Nha Trang has more than 30 years of experience in manufacturing equipment and systems for processing agricultural products such as coffee, pepper, and cocoa … in Vietnam and over the world. Depending on your requirement for machine capacity and the factory’s location, we will give the most helpful advice as well as arrange a suitable place for you to visit. Please contact our hotline at (+84) 966 757 757 to get more information.

What is the warranty policy applying for the Vina Nha Trang's dust-tight size sorter?

Vina Nha Trang provides free warranty service within 12 months from the Delivery Date for mechanical parts.

How can I get the quotation of the dust-tight size grader machine of VNT?

Please contact our hotline at (+84) 966 757 757 for support. In addition, you can leave a message in the “CONTACT FOR QUOTATION” section below, we will get back to you within 24 hours.