Compact Grader

A simple step towards automation

  • Compact solution, easy to install and operate
  • Reduces giveaway
  • Over 50 grading programs give product and volume versatility
  • Simple fixed or catch-weight batching, for retail and catering


The Compact Grader is designed for simple grading of whole fish and fresh and frozen fillets . It can be used as a stand-alone solution - its small footprint is ideal if your space is limited - or added to an automatic production line to help manage seasonal overflow.

An easy step towards grading automation

The Compact Grader gives you a straightforward and cost effective way to automate your grading and batching process. It comes ready to use, requires minimal assembly and thanks to its unique telescopic legs, the height can be easily adjusted so installation couldn’t be simpler. You can be up and running in no time at all and with minimal disruption to your production schedule.

Automation to minimize labor and giveaway

The level of automation that the Compact Grader brings not only gives you better accuracy, which significantly reduces giveaway, it also makes you less reliant on manual labor.

Unrivaled grading flexibility

With more than 50 easy-to-configure grading programs, the Compact Grader allows you to quickly and easily adapt to different customer demands. The superior grading arms are optimally shaped to handle fragile and particularly thin products. Different belt widths and a variable number of gates provide flexible grading capacities.

High-throughput batching

With the addition of bins and tables the Compact Grader can automatically create simple fixed or catch weight batches, into boxes, bags or tubs, for both retail and food services. This immediately reduces your giveaway and increases packing speed.


The Compact Grader comes in main versions:

  • CG450 2x3 and 2x4 gates
  • CG600 2x3 and 2x4 gates
  • CG900 2x3 gates

Optional features

Batch light panel left and right
End shelf for a box
Tables at the gates
Batching bins with push buttons and tables
Spray unit on the conveyor belt Drip Pan

Compact Grader model CG450 CG600 CG900
Max product length:
250 mm / 10 in
400 mm / 16 in
700 mm / 28 in
Max product width:
250 mm / 10 in
250 mm / 10 in
250 mm / 10 in
Weight range:
Raw material:
non-sticky product
non-sticky product
non-sticky product
Max throughput:
160 pcs/min
120 pcs/min
80 pcs/min
Gate division:  
475 mm / 18,7 in
475 mm / 18,7 in
650 mm / 25,6 in


Benefits of Innova for graders

  • Real-time monitoring and control with Innova
  • Data collection gives insight to optimize grading
  • Enhances batch traceability and quality assurance

Monitor and control grading

The Innova module for grading lets you monitor and control your processing in real time. The software provides live dashboards showing data for key performance indicators such as weight distribution, giveaway and throughput. They give you a clear overview of actual production and highlight where improvements can be made or whether any corrective action needs to be taken to ensure production is running optimally. Remote program management allows you to control grader settings directly from the office. 

Get operational insight 

Information about all batches produced is collected and stored in the Innova database. Standard reports can then be created giving you an insight into operational performance on a daily, weekly or monthly basis. This statistical analysis takes away the guesswork and allows you to make data-driven decisions to optimize your batching. 

Connect your business 

Innova software can be implemented stand-alone with your grader or it can be integrated with other Marel processing equipment across a full-line solution. Based on these valuable KPIs provided by Innova, you can make intelligent decisions on how to optimize your grading and batching results.


Marel offers a range of service solutions to prevent failures, maximize performance or in case of unexpected breakdowns remote or onsite assistance.

Marel has offices in 30 countries across all regions, and a global network of highly skilled professionals that provide remote as well as onsite service support. We provide quality spare parts and customized service agreements for our customers to ensure optimal performance of Marel equipment.


Customer stories

Coinrefri Workers Along Fish Processing Line

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Get in touch

Our dedicated team is here to help and answer any questions you might have.

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