Adjustment Of The Snapping Rolls; Distance Between The Snapping Roll Shafts; Setting Labyrinth Seal; Alignment - MacDon C Series Operator's Manual

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Setup procedure and adjustment of the corn head

8.4.1 Adjustment of the snapping rolls

Three important settings must be observed when

installing or adjusting the snapping rolls:

Adjust the shafts parallel to each other by setting

62mm between the two bearing housings as shown

in the illustration. This distance can be increased or

decreased by using a washer spacer, as required.

Two sealed double ball bearings are used to support the spiral

end of the snapping roll, and a labyrinth seal protect them. This

seal operates only if the distance between the stationary bear-

ing block and the rotating snapping roll is not larger than 0,5 or

1mm.

The snapping rolls flatness comes from the snappingunit gearbox assembly, but the

parallelism to the axis must be checked. The axis of rotation of the snapping roll

must be parallel, both to each other and relative to the breaking line of the snapping

units frame.

Correct setting

Incorrect setting

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