Engine RPM kw

How to choose electric engine for extruder machine? Power? RPM’s? kw? And engine reducer?

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check here: http://onearmy.world/community/forums/topic/share-your-shredder-motor-experience/
long story short: 1-2 kw runs so lala (jams too easy), 3-4kw runs smooth and efficient with way less jamming 🙂