The FstSort Adjustable Roller Grader is a versatile roller grading machine for fruits and vegetables. Available in two configurations – large-fruit version (25–124mm) for potatoes, carrots, onions, and apples; small-fruit version (15–75mm) for lychee, dates, jujube, lime, cherry tomato, and potato seeds. This roller sorting machine features adjustable grade sizes, gentle food-grade contact materials, and adjustable speed. Ideal for multi-crop packing lines, seasonal size variation, and integrated post-harvest lines.
The FstSort Adjustable Roller Grader – a highly adaptable roller grading machine developed by our company – is composed of a hopper and an adjustable roller sorter. This roller sorting machine sizes vegetables and fruits by width/diameter using a series of forward-moving rollers: one bottom bed of fixed rollers, and a top bed of height-adjustable rollers. Every top roller is mounted in a polymer guide plate, which allows them to lift vertically to create a specified grade size.
Two Configurations for Different Crop Sizes
The FstSort adjustable roller grading machine is available in two size ranges to cover both large and small produce:
Configuration | Grade Size Range | Typical Crops |
|---|---|---|
Large-fruit version | 25 – 124 mm | Potatoes, carrots, onions, parsnips, Brussels sprouts, celeriac, turnips, beets, oranges, apples, sweet potatoes |
Small-fruit version | 15 – 75 mm | Lychee, dates, jujube, lime, kumquat, potato seeds, mini tubers, cherry tomato, olives, coffee cherries |
Both versions are built on the same adjustable roller principle – simply choose the range that matches your crop types.
Key Features of This Roller Sorting Machine
Adjustable grading size – Unlike traditional graders, this roller grading machine allows quick adjustment of grade sizes without changing parts. Large-fruit version covers 25–124mm; small-fruit version covers 15–75mm.
Wide crop compatibility – This roller sorting machine works for round, oval, long, and irregular shapes:
Large-fruit crops: Potatoes, carrots, onions, parsnips, turnips, beets, oranges, apples
Small-fruit crops: Lychee, dates, jujube, lime, kumquat, potato seeds, mini tubers, cherry tomatoes
Gentle handling – Selection speed is adjustable, and all crop-contact materials are food-grade soft materials to minimize damage.
High efficiency – Accurate sorting, simple operation, and low power consumption.
Where to Use This Adjustable Roller GraderThe FstSort adjustable roller grading machine is ideal for:
Multi-crop packing lines – Process large crops and small crops on the same machine family with different range versions.
Seasonal size variation – Adjust grading gaps as crops grow larger or smaller across harvest windows.
Seed potato grading – Small-fruit version perfectly handles potato seeds and mini tubers.
Fresh market packhouses – Achieve consistent size grades without extra labor.
Integrated processing lines – Combine with washing, air drying, waxing, and automatic bagging or box filling systems.
👉 View all roller grader models and specifications on our product category page.
Customer Cases & More
Check roller grader product category page to see this roller sorting machine in action on various crops – from large onions and carrots to small lychees and cherry tomatoes.
Size and quality grading are crucial for fruit and vegetable marketing. This roller grading machine greatly increases productivity, clearly classifying products into first-grade, second-grade, or high-quality categories without requiring more labor. The sorting accuracy gives you confidence in providing customers with consistent, homogeneous produce.
Whether you need washing, air drying, waxing, drying, grading, or packaging – we are ready to customize a solution for your needs.