The radial grader is designed for grading a wide range of vegetables, including carrots, potatoes, onions, parsnips, flower bulbs, beets, rutabaga, and other similarly shaped produce. The Allround radial grader is a two-dimensional grading system designed for efficient produce sorting based on diameter size. The grading size can be adjusted manually or automatically. The grading size is adjustable on every belt except the last, because the largest size is always sorted on the last belt.
The produce is transported and rotated over rollers. The distance between the rollers increases, so as the produce is being transported, it will fall from small to large between the rollers. The produce falls onto a belt, which continues transportation. Several belts are mounted for several grading sizes. Adjustable angles are mounted to get the size faster and give produce more time to drop on the belt.
Characteristics
Sorts produce by diameter using rotating rollers with progressively increasing gaps
- Smaller produce falls through earlier, while larger ones continue forward for precise separation
- Each size category is collected on a dedicated conveyor belt for organized and continuous handling
- Adjustable angles improve grading precision and optimize product drop timing
Grading size can be adjusted manually or automatically
Ensures high efficiency, accuracy, and gentle product handling
Anti-lift on every belt except the last. This option prevents the rollers from being lifted by produce and is typically used for elongated produce
The frame can be made from painted mild steel, stainless steel AISI304, or zinc-sprayed painted mild steel. But the bearings and drive/idle rollers are always made from mild steel
Specifications
| Grading size minimum – maximum (mm) | ||||||||
|---|---|---|---|---|---|---|---|---|
| Roll diameter | Pitch 63 mm | Pitch 76.2 mm | Pitch 80 mm | Pitch 90 mm | Pitch 100 mm | Pitch 110 mm | Pitch 125 mm | Pitch 150 mm |
| 57 mm | 6 – 69 | – | – | – | – | – | – | – |
| 70 mm | – | 6.2 – 82.4 | 10 – 90 | 20 – 110 | 30 – 130 | 40 – 150 | – | – |
| 76 mm | – | – | – | 14 – 104 | – | – | – | – |
| 84 mm | – | – | – | – | 16 – 116 | – | 40 – 165 | – |
| 89 mm | – | – | – | – | – | – | – | – |
| Estimated capacity (tons / hour) | ||||||||
|---|---|---|---|---|---|---|---|---|
| R 80 | R 120 | R 150 | R 165 | R 180 | R 200 | R 260 | ||
| Carrots | 3 – 4 | 8 | 14 | – | 20 | 25 | 35 | |
| Baby carrots | 3 – 4 | 5 – 8 | 10 – 12 | – | 14 – 16 | 18 – 22 | 25 – 30 | |
| Red beet | 5 – 6 | 8 – 10 | 14 – 16 | – | 22 – 30 | 35 | 45 | |
| Potatoes | 6 – 7 | 8 – 10 | 15 – 18 | – | 22 – 30 | 35 – 40 | 45 – 50 | |
| Parsnips | 2 – 3 | 3 – 4 | 6 – 8 | – | 12 | 18 | 24 | |
| Onions | 6 – 7 | 8 – 10 | 15 – 18 | – | 22 – 30 | 35 – 40 | 60 | |
| Set onions | 3 – 5 | 6 – 8 | 10 – 12 | – | 14 – 16 | 18 – 22 | 25 – 30 | |
Options
- Material and treatment (frame)
- Material and treatment (plating)
- Belt
- Electrical control
- Material and treatment (electrical panel)
- Material and treatment (subframe)
- Height of subframe
- Adjustment grading size
- Conveyor movement
- Alignment
- Cleaning
- Chain greasing
- Oversize valve
- Oversize sail