Re: Maximat 7 mill head motor issues
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Mill (if it's 4 speed model) should only have 4 wires and none should be shorted together. One must be hardwired to the motor body, so should be easy to find. Other 3 are equals in 3ph motors but are different in 1ph motors so it depends on what you have. Posting your motor nameplate picture is a good starting point.
Single phase mill is normally controlled by a somewhat complicated switch. Three phase one is a simple switch. You can use a VFD on a 3ph model, on a 1ph you cannot (you would need a pretty rare type of VFD). There are plenty of manuals in the files section. Not sure there is one specifically for the FB-1 mill but you can scrape the info together from different sources for sure. Spindle bearings on the mill are not adjustable. You can replace top ones, bottom one has inner race integrated with the spindle and would be PITA to service. Lathe spindle can be adjujsted, look for keyword "preload" in the old topics
On Tue, Apr 29, 2025 at 1:26?PM teamricky.m via <teamricky.m= [email protected]> wrote: Hello gentlemen?
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I¡¯m new here and new to vintage Emco machines too :)
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my background is marine engineering and I have questions about my new machine that more experienced ppl will likely know !
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First issue and the main one is the mill motor spins over but has no torque, you can stop the spindle by hand even in low gear ¡¡
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the motor wiring looks suspect to me v¡¯s the wiring diagram?
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at some point the 4core cable has been replaced and the coulors do not match which is a pain !
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first wire issues are two of the motor wires were joined together not per drawing, Earth ok
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so I would need a technique to I¡¯d the wires at the motor end and replace the cable for the correct coulor code
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next question : Is there a controller for the motor or just a simple switch ?
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next question : Is there a manual for the mill only ? I have the standard manual with some details but not what I would consider a full manual / leads onto ¡..
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how to adjust the spindle bearings if at all possible?
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I think that covers the main points if any folk can help !
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cheers R
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