Fstsort onion sorting grading machine includes hopper, elevator, roller inspection conveyor, air blower, and size grader. Choose roller, drum or screen sizer for purple/yellow/white onions. Add skin remover, auto box filler or bagging system. Get quote with custom layout.
Product Overview
The Fstsort onion sorting grading machine typically consists of a feeding hopper, elevator, roller inspection conveyor, air blower, and size grader. It offers variable speed and large capacity for commercial onion packing lines.
The air blower works together with gaps at the feeding part and outlets to remove impurities and the outermost loose skins from onions or garlic. Workers can perform quality inspection on the PVC roller conveyor. A simple bagging device at each exit helps you pack directly into net bags or cartons after sorting.
Three Grading Technologies for Different Onion Types
Grader Type | Best for Onion Variety | Key Feature |
|---|---|---|
Drum Grader | Flat purple onions | High capacity, simple structure |
Roller Grader | Round/oval yellow & white onions | Gentle handling, reduces bruising |
Screen Sizer | Round/oval yellow & white onions | Precise sizing, customizable screen holes |
✅ Customization options:
Add loose skin remover (air blower or vacuum unit) to remove the outermost flaky onion skins
Add automatic box filling system after grading
Add automatic bagging system (net bags, woven bags, cartons) according to your packing needs
Roller Type Specifications (FIPG-6000 & FIPA-6000)
These onion roller graders are ideal for round/oval yellow and white onions.
Model | FIPG-6000 | FIPA-6000 |
|---|---|---|
Capacity | 6-8 t/h | 6-8 t/h |
Grade | 4 | 5 |
Inner width (mm) | 1000mm | 1000mm |
Dimension (mm) | 9200*1600*1200mm | 10040*1650*1320mm |
Power | 1.85KW | 2.4 KW |
Voltage | 380V/50hz | 220V/380V |
Grade range | 20mm-150mm | 25mm-124mm |
FIPG-6000
FIPA-6000（With vacuum cleaner:removes the surplus outer layer from the onion bulbs)
Onion grading machine customized for Middle East customer
Screen Sizer Specifications (FISG-8000)
The FISG-8000 screen sizer is perfect for round/oval yellow and white onions requiring high precision.
Description:
This onion sorting line consists of elevator, pre-sorter, brush cleaning machine, manual inspection table, screen sizer and gravity conveyor.
Features:
Large capacity
Customizable screen grade sizes
Easy to operate, low maintenance
Cleaning unit easily removes onion skin
Inspection table for picking out defective products
Model | FISG-8000 |
|---|---|
Capacity | 15-20 t/h |
Grade | 4+1 |
Brushes for polishing (pcs) | 10 |
Inner width (mm) | 1500mm |
Dimension (mm) | 23000*3500*1500mm |
Power | 7.67KW |
Voltage | 380V/50hz |
Optional Packing Systems
After grading, we can integrate:
Automatic box filling system – fills sorted onions directly into cartons or crates
Automatic bagging system – supports net bags, woven bags, and plastic bags
Simple bagging device (standard on roller models) – manual bagging at each exit
All packing modules can be used independently or combined with the grading line.
Frequently Asked Questions
Key questions customers usually ask before choosing this solution.
What types of onions can this onion sorting grading machine handle?+
Our machine handles all common onion types. Use the drum grader for flat purple onions, and the roller grader or screen sizer for round/oval yellow and white onions.
Can I add a loose skin remover to the grading line?+
Yes. We can add an air blower or vacuum unit (like on the FIPA-6000) to remove the outermost flaky skins from onions before or during grading.
What’s the difference between roller grader, drum grader and screen sizer?+
Roller grader: Gentle on round/oval onions, reduces bruising – ideal for yellow/white onions. Drum grader: High capacity, simple structure – best for flat purple onions. Screen sizer: Precise sizing with customizable screen holes – perfect for round/oval onions.
How do I choose the right grader for my onion farm?+
Contact us with your onion variety (purple/yellow/white), shape (flat/round/oval), target capacity, and packing method. We will recommend the best model (roller, drum or screen) and provide a custom layout.