I placed mine as high as I could to get stability but as low as possible to get the travel distans I wanted :)
The further apart you have them creates less leverage on the bearings, more even load..
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I placed mine as high as I could to get stability but as low as possible to get the travel distans I wanted :)
The further apart you have them creates less leverage on the bearings, more even load..
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Hi All,
I would like your opinions on the following.
Since my Y axis ballscrew is at the rear off the gantry, i have to make a choice.
Have the fixed end of the cable chain and ball screw inside the z-axis assembly or out side.
Like this or that:
Attachment 23665Attachment 23666
The chain would rest on top the gantry with a simple L support screwed to the back of the gantry to allow for a chain wide enough.
Moving end of chain would connect to the top z assembly plate near the nema
I feel keeping the box that surrounds gantry as small as possible, is best for rigidity.
On the other hand i would not have to make a separate floating support system for the cable chain.
Adding more weight and vibration.
Also i think having it on inside would look much better.
Grtz Bert.
Hi Bert,
Personally structural integrity wins over cable routing every time. So I would go with the image on the left with the closer ballscrew connection. Then make the neatest job of mounting the cable chain on the back. Wouldn't worry about weight and vibration of the extra support bracket holding the cable chain.
Make all drag chains Horizontal, not Vertical. And use bigger that you think what will work.
Hi guys,
I have found a supplier for 7075 rolled sheet.
Will rolled 7075 be flat enough for z assembly plates.
I do have an automotive cilinderhead grinder option if it pans out to be unflat.
Or would ground 5083 be the better choice..
In a small volume and suppliers compared not much price difference..
I am really drawn to the 7075 for the obvious reasons [emoji16]
Grtz Bert
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Finally progress, found a good source for 7075 milled both sides, so ordered z plates...
Need to decide on steppers now and htd pully and belts size.
Grtz Bert.
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Parts for z axis arrived today.
Looks like i have stuff to do this weekend :-)
Grtz Bert.
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Hi guys,
I have question.
I ordered c7 ballscrews from Fred with the higher spec bf bk bearings.
There are spacer rings included. those are smaller then expected. id the ring is ok, od is smaller then the dust seals of the bearing block... by about 2 mm.
Do i need seals on the angular bearings?
If so... i will contact Fred for new rings.
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No worries , you are fine!
I have the manual for those bearings but it seems that I can not attach it here, if you want it send me your email with pm.
These are the fixed end bearings.Quote:
Originally Posted by Nickhofen
Took the lid of..
7002 atyn df p5 -5/-5 germany x cy-0780
Opinions?
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