Cherry Grading

GP Graders are innovation and technology leaders in the industry, and we have introduced almost every innovation in the cherry machinery industry since 1987. Our AirJet® electronic cherry graders are the most technologically advanced sorting machines available in the market today. This cutting-edge technology helps you to achieve the best possible returns for your fruit, by dramatically reducing sorting and packing costs and providing perfect size grading.

Fast, gentle and accurate, GP Graders’ electronic AirJet® grader sorts cherries at a speed of 30.2 units per second, or 1433lb per lane per hour yielding high productivity while maintaining grading accuracy.

TECHNOLOGY

SUPERIOR CAMERA TECHNOLOGY

Our new HD cameras give the sharpest picture resolution for size, color and defect analysis. B&W, Color and NIR HD cameras are located directly over the rotating cherry taking synchronized images, and ensures no parrellax errors corrupt the image analysis. High intensity pulsing LED lighting provides intense illumination of fruit under the cameras, which removes “light glare”. 30 images of the total surface area of each cherry are captured for analysis. This new level of analysis is unprecedented in the fresh produce industry and puts us at the forefront of the cherry grading industry. Cherry Grading HD Color camera photos
Cherry Grading HD Color camera


SIZE SEPARATION


The dimensions of each product are calculated using multiple images of the product. Our software detects the stem and the center of gravity: in this way, we know which diameter must be measured. Specialized algorithms determine the orientation of the product. Diameter, length, curvature, surface – but also shape can be determined.
SIZE SEPARATION Cherry

COLOR SEPARATION


The color of the fruit is an excellent indicator of the ripeness and quality of the fruit. Our color module enables you to select the color by which you would like to grade the fruit, using live feedback from high-resolution cameras. This allows you to accurately specify the properties of the fruit, such as blush. For products like cherries, this module is crucial. 

 

GENTLE HANDLING



Be assured that the AirJet™ grader is a sorting machine that is gentle on your fruit so that your product retains its high quality and high value. All hard surface transfers have been eliminated and all movement of cherries is conducted via gentle water transfers.
GENTLE HANDLING Cherry

DEFECT SORTING

How many rotten spots does a cherry have? What percentage of the cherry is rotten – and what is the most rotten spot? The color module alone is not enough, for some properties of the fruit. In order to distinguish specific properties, such as naval, stem, calyx, mould, scratches, and other defects, shape and context are also important to determine. For these properties, the intelligent quality module is the solution. In combination with infrared cameras, even defects and bruises just under the skin can be detected.

WHY CHOOSE GP GRADERS CHERRY GRADING MACHINERY?

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SUPERIOR CAMERA TECHNOLOGY

Sorts cherries by color, size, shape and defects for greater market prices and reduced sorting costs.
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FAST

Each lane moves at speeds of up to 32 units per second allowing high productivity while maintaining grading accuracy.
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GENTLE

So that your product retains its high quality and high value.
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ACCURATE

97% sizing accuracy and 100% accurate color separation.
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REMOVES DEFECTS

Identifies over 80% of defects including cracks and softness.
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COST EFFECTIVE

Reducing the number of inspection staff required by up to 60% and therefore lowering your overheads.

OUR PRODUCTS

OUR MACHINES IN ACTION