Need Help!- Looking Stepper Motors for G540.

[samsagaz]

Hi guys, im planning to build an 3 axis machine, i already ordered the G540, and now im planning to purchase the Steppers.

I want an powerfull machine, Budget in motors are 500USD, want to know wich model you recommend me, Nema34 or Nema23? How Much power?

[Kelinginc]

check the G540 package here

http://www.kelinginc.net/CNCNEMA23G540Package.html

[Crevice Reamer]

There are presently no N34 motors that are compatible with G540's 50V, 3.5A envelope.

What motors you need depends on many factors including machine size and type of axis drive.

We need more information to help you make a choice.

CR.

[samsagaz]

Originally Posted by Crevice Reamer There are presently no N34 motors that are compatible with G540's 50V, 3.5A envelope. What motors you need depends on many factors including machine size and type of axis drive. We need more information to help you make a choice. CR.

i want to use the biggest possible motor that support G540, because if want to upgrade my CNC Machine in an future i dont want to purchase more motors, in aregentina are really enpensive, so want to purchase it from USA or China, right now i have X 45cm, Y 55cm, and need to purchase some linears for the Z axis.

[samsagaz]

Originally Posted by Kelinginc check the G540 package here http://www.kelinginc.net/CNCNEMA23G540Package.html

I Already get the G540, i want the motors.

You know some good 4 Axis project to build? i wanna purchase an 3 axis, but maybe an 4 axis will be an nice upgrade

[Crevice Reamer]

Originally Posted by samsagaz i want to use the biggest possible motor that support G540, because if want to upgrade my CNC Machine in an future i dont want to purchase more motors, in aregentina are really enpensive, so want to purchase it from USA or China, right now i have X 45cm, Y 55cm, and need to purchase some linears for the Z axis.

So 18 inches by 23 inches?

I would recommend this:

$299 G540 http://geckodrive.com/product.aspx?c=3&i=14469
$078 Two $39 KL23H276-28-4B 270 oz motors for X & Y
$049 One KL23H284-35-4B 387 oz motor for Z
$060 One KL-350-48 48V/7.3A power supply.
$010 Estop switch

If you really want the BIGGEST motors, then go all 387s.

If you go 4 Axis with all 387s, you will have to upgrade the PSU to KL5010.

http://kelinginc.net/

CR.

[samsagaz]

Originally Posted by Crevice Reamer So 18 inches by 23 inches? I would recommend this: $299 G540 http://geckodrive.com/product.aspx?c=3&i=14469 $078 Two $39 KL23H276-28-4B 270 oz motors for X & Y $049 One KL23H284-35-4B 387 oz motor for Z $060 One KL-350-48 48V/7.3A power supply. $010 Estop switch If you really want the BIGGEST motors, then go all 387s. If you go 4 Axis with all 387s, you will have to upgrade the PSU to KL5010. http://kelinginc.net/ CR.

i see if use something like
NEMA 23 BIPOLAR STEPPER MOTOR 495 oz-in, 1/4” Diameter shaft with a flat KL23H2100-30-4BM (Dual Shaft)

The G540 dont will support it, right?

[Crevice Reamer]

Originally Posted by samsagaz i see if use something like NEMA 23 BIPOLAR STEPPER MOTOR 495 oz-in, 1/4” Diameter shaft with a flat KL23H2100-30-4BM (Dual Shaft) The G540 dont will support it, right?

Oh the G540 WILL run the 495--Just not so fast. The 495 gets its best speed with an 85V PSU. G540 can only support 50V. Fast rapids are important on a router, so this is not the best choice. Bigger is not always the best.

CR.

[samsagaz]

Originally Posted by Crevice Reamer Oh the G540 WILL run the 495--Just not so fast. The 495 gets its best speed with an 85V PSU. G540 can only support 50V. Fast rapids are important on a router, so this is not the best choice. Bigger is not always the best. CR.

Thanks too much CR, so you think that
4x KL23H284-35-4B will be fast enough?

or

4x KL23H276-28-4B will be better?

[Crevice Reamer]

Originally Posted by samsagaz Thanks too much CR, so you think that 4x KL23H284-35-4B will be fast enough? or 4x KL23H276-28-4B will be better?

270s should be fine for X/Y on present router and will give slightly faster rapids. You need a stronger motor on Z axis though, (Has to lift weight) and probably also on 4th axis.

For a much larger router though, you might want the 387s for X/Y.

Remember, if you go 4X 387, you will need the larger (and more expensive) KL-5010 PSU.

CR.

[samsagaz]

Hi guys, i will purchase the 387 oz-in Nema 23, THe table that i want to build will run the axis trough LM THK Linear Motion Guides. I want to know the maximun weight of the table/axis that can support the 387 oz-in steppers. i mean, i want to build an stable machine, i will use steel (carbon steel, mybe template after cut it to get hard material), but i want to measure how much weight can move the stepper motor without get into trouble.

I dont want to use Aluminium as frame, i want an stable machine.

Thanks in advance.