Apollo Fish Graders

Developed in 1981, the Apollo grading machine is a top-quality product within the area of fish farming. One of the basic advantages of the Apollo grading machine is that it has proven its usefulness in the production, as it has been well-tried and tested thoroughly. The grader is made in AISI 316 acid-resisting stainless steel, which makes it prefect to use in working situations involving seawater.

The Apollo grading machine is a specially developed machine, which can sort living fish such as salmon, trout and eel. It sorts the fish in 3 or 4 different sizes by means of rollers, which are situated 2 by 2.

The rollers run against each other so that the fish are “lifted” up onto the rollers. When the gaps between the rollers are big enough, the fish will eventually slide down and end up in grading sizes below the rollers.The rollers are adjusted according to the size of the fish. Any adjustment of the width between the rollers is made with two finger screws and the width varies from 0 up to 36 mm.


One of the unique qualities that the APOLLO grading machine possesses is that it can be adjusted in both angle and height in order to match the working environment at hand.

If a greater slide-angle is wanted, it is possible to adjust the height of the machine trough the rear wheel. The wheel can be adjusted from 10 cm to 30 cm ( in 10 cm intervals ). Nosewheel unadjusted (low slide-angle) This kind of adjustment can be very useful if the activity level of the fish varies. During the summer when the weather is especially hot, the fish tend to be more active than usual. When the weather is cold, the opposite happens.


Technical data
Fish species Eel Trout, Salmon, Codfish, Smolt etc.
Model 4 tracks 4 tracks 5 tracks 7 tracks 10 tracks
Total width at rear wheels [cm] 108 108 128 166 222
Distance nose to rear wheel [cm] 270 270 270 270 270
Total length of machine [cm] 315 315 315 315 355
Width of machine at top [cm] 83 83 102 139,6 196
Height [cm] 128 128 128 128 128
Height adjustment, rear end [cm] 10/20/30 10/20/30 10/20/30 10/20/30 10/20/30
Height adjustment, front end [cm] 25 25 25 25 25
Weight [kg] 280 280 375 485 650
Distance between rollers [mm] 0-36 0-36 0-36 0-36 0-36
Distance between topbars [mm] 38 38 38 38 38
Length of rollers [cm] 200 200 200 200 200
Curvature accuracy of rollers [mm] <0,2 <0,2 <0,2 <0,2 <0,2
Motors, power [kW] 0,18 0,18 0,18 0,18 0,18
Motors, rpm [rpm] 900 900 900 900 900
Standard voltage [V] 230/400 230/400 230/400 230/400 230/400
Gear ratio i=47 i=47 i=47 i=47 i=47
Sprocket wheel, no. of teeth z=32 z=19 z=19 z=19 z=19
Number of grading sizes 3 or 4 3 or 4 3 or 4 3 or 4 3 or 4
Capacity (with 300-400 gr.) [ton/h] 2-3 3-4 4-5 6-8
Waterflow [ltr] n/a 1000 1000 1400 2000
Size range [gr] 1-180 1-650 1-650 or 5-750 1-650 or 5-750 1-650 or 5-750