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If you notice my pound was balanced curve to curve on the circular bearing housing to make sure it got maximum vibration and if it moved it wouldn't roll around but fall off .Jo
Stuart - I have a round column mill which originally suffered significant vibration. I changed the single phase motor for a 3 phase motor with inverter control, and also replaced the two vee belt drive arrangement for a single polyvee belt drive from motor to quill column thus missing out the intermediate pulley arrangement.Result? Vibration now negligibile, if this helps your decision making process at all.Chris