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Hi there.Is the motor an AC version ?Single phase or Three phase ?Cheers Graham.
Well yes that's what I'm saying - the bearings are designed for most motors to run in a horizontal plane. By supporting the weight of the shaft in a vertical mounting this eliminates the armature bearing against surfaces which it is not meant to run against - no doubt causing the heat increase you experiencedMy little tweak supported the weight of the armature and placed it in it's sweet spot. I agree I did have to 'modify' the motor in as much as drilling and tapping three small holes in the end cover to hold it there but there is of course another way to get over that assuming that the motor has the pulleys or drive top mounted - use a thrust race on the top of the motor beneath the pulley the armature supported by a spacer of correct length between thrust race and pulley to lift the armature in it's right place. When you say 'in the mill' however leads me to think this may be a flange mounted motor on top of the mill so maybe making a thrust pad that can fix beneath the shaft to do the same as above may be possible.If there is insufficient room to enable any of these simple tweaks then fitting the correct manufacturers motor which should have bearings capable of taking the weight of a vertical mounted motor seems to me may be the only option.Tug