Understanding Variable Core Feature (If Equipped)Variable (soft) core feature uses an adjustable cam, microswitch and solenoid valve (A) to lower hydraulic pressure to the tension cylinders, resulting in a lower density core at the center of the bale. With solenoid energized, hydraulic pressure to the tension cylinders is limited to 5171 kPa (51.71 bar) (750 psi), to form soft inner layers. With the solenoid de-energized, full system pressure returns to tension cylinders to finish the bale with tighter, high density, outer layers. Set variable core diameter at least four inches under full bale diameter, so tight, dense, outer layers are formed. High density outer layers are needed so bale holds its shape when wrapped and also to help the bale repel water. An example ; If full bale diameter is 60 in. and variable core diameter is set at 30 in., the first half of the bale will be formed at lower hydraulic pressure and lighter density before finishing the last half of the bale at full system pressure which forms tighter, denser, outer layers.
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