Stainless steel crawfish and lobster sorting machine with adjustable roller gaps. Sorts by head diameter – range from 15mm to 76mm. Ideal for crawfish, lobster, shrimp, and crab. Upgrade from manual sorting. Get quote.
Why Seafood Processors Need a Crawfish Sorting Machine
Crawfish, lobster, shrimp, and other crustaceans vary significantly in size. In processing plants and distribution centers, size grading is essential for:
Pricing different sizes appropriately
Meeting buyer specifications
Packaging uniform portions
Maximizing product value
Traditional manual sorting is slow, inconsistent, and labor-intensive. A crawfish sorting machine automates the process, grading crustaceans by head diameter with speed and accuracy.
Fstsort Stainless Steel Lobster Grader
The Fstsort crawfish and lobster sorting machine (also referred to as a lobster size grading machine) is specifically designed to accurately categorize crawfish and lobsters based on the diameter of their heads/front carapace.
Why measure head diameter? The widest part of the head shell is the most consistent dimension for grading crustaceans, ensuring efficient and effective sorting.
Key material: Constructed with stainless steel – food-grade, rust-proof, and easy to clean. Essential for seafood processing environments.
How the Adjustable Roller Grader Works
The machine uses a stainless steel adjustable roller system:
Crawfish or lobster are fed onto the roller conveyor
As they move forward, the gap between rollers gradually increases
Smaller specimens fall through first, larger ones continue
Each size exits at a different position
Core technology: Adjustable roller gaps – operators can change the grading range without replacing parts.
Technical Specifications – Flexible & Customizable
Parameter | Value |
|---|---|
Sorting principle | Head / carapace diameter |
Standard grading range | 15 – 50 mm |
Extended range (adjustable) | Up to 66 mm or 76 mm |
Material | Stainless steel (food-grade) |
Structure | Adjustable roller gaps |
Compatible products | Crawfish, lobster, shrimp, prawns, small crab |
Operation | Single operator |
✅ Adjustable sizing design – you can change the grading range based on seasonal catch sizes or customer requirements.
Key Advantages
Advantage | Benefit |
|---|---|
Adjustable sizing range | One machine handles multiple size specifications |
Stainless steel construction | Food-grade, rust-proof, easy to sanitize |
High capacity | Processes hundreds of kg per hour |
Accurate grading | Consistent head-diameter measurement |
Gentle handling | Rollers reduce damage to product |
Easy operation | Single operator can manage the line |
New Innovation: Extended Sizing Range
While older models do well in crawfish and lobster classifying, Fstsort has added significant improvements.
Before: Fixed sizing range (e.g., 15-50mm)
Now: Adjustable sizing design – you can process at ranges of 16-66mm or even 76mm
💡 The lobster sorting machine maintains good stability with better performance, even at extended size ranges.
Applications: Beyond Crawfish and Lobster
This grader works for multiple seafood products:
Product | Suitability |
|---|---|
Crawfish | Excellent – industry standard |
Lobster | Excellent – measures head diameter |
Shrimp / Prawns | Very good – adjustable for smaller sizes |
Small crab | Good – for uniform sizing |
Crayfish | Excellent – similar to crawfish |
Why the Seafood Industry Chooses Fstsort
Crawfish and lobster processors face unique challenges: wet environments, need for sanitation, variable catch sizes, and tight profit margins. Our sorting equipment addresses all of them.
"There is no doubt that seafood supplying chain and distribution line suppliers should pick up our crawfish/lobster sorting equipment."
Reasons to choose Fstsort:
Need | Solution |
|---|---|
Sanitary environment | Stainless steel construction |
Different size grades | Adjustable roller gaps (15-76mm) |
High throughput | Continuous operation |
Low maintenance | Durable design |
Operator safety | Enclosed moving parts |