Aluminium profile cnc build

[Lee Roberts]

Which spindle bracket is better? Thinking if they will have the same strenght?

This one:

http://www.ebay.co.uk/itm/Dia-80mm-S...3D322225414288

or this one


http://www.ebay.co.uk/itm/80mm-Diame...3D322225414288

The second link/item is the one to go for.

[A_Camera]

Which spindle bracket is better? Thinking if they will have the same strenght?

This one:

http://www.ebay.co.uk/itm/Dia-80mm-S...3D322225414288

or this one


http://www.ebay.co.uk/itm/80mm-Diame...3D322225414288

Definitely the second one, but beware, even that can crack.



http://adapting-camera.blogspot.se/2016/09/cnc-upgrade-progress-disaster-strikes.html

This is how I fixed it:

http://adapting-camera.blogspot.se/2...g-cracked.html

Anyway, I bought a new one but have not installed it yet and I think the quality is the same. Cast aluminum, at least the way these cheap brackets are made, are not the best for this purpose.

[njhussey]

I'd buy a SBR50UU and use the housing as it's 80mm and slit along one side to clamp the spindle....

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[valdis034]

Thanks guys, placed an order for second option. We will see how it will hold.

Today got my spindle and was surprised to find 3pin plug for it. Isnt it supposed to be 4pins ( three phases and earth)?



Another thing the locking nut has been drilled, is that they way they tried to balance it? Is it normal?



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[Davek0974]

exactly the same as mine.

yes the drill holes are their attempt at balancing the lock nut.

Mine only has three pins - i connected the earth ground to the shell of the plug and tested for connectivity to the body, the whole machine is earthed anyway and the motor has a metal body so should be safe enough.

[valdis034]

Off course with spindle got the inverter and have the electrical box, thinking that box might be a bit small for all the stuff..


what size enclosures you have to fit everything?

Here will be 4 drivers, BOB, toroidal transformer, 24v supply, realays, filtered fan on the door or on the side of the box and some wires..

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[Davek0974]

going to be tight i think, i like a bit more room - makes setting up/debugging/repairs easier IMHO.

[njhussey]

I've got a 600 x 600 panel and its tight enough without the vfd in there....

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[valdis034]

This one is only 600×380. So yes, need to look for something bigger.

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[Lee Roberts]

I always tell people to get a 6x9...some listen...some dont.