The matched G540/387ozin stepper motors are...

[MrWild]

My math was wrong. The 387inoz has over 1NM of torque right up to 750RPM

[Jeff Davis]

I think something has been lost in translation. The best bang for the buck motor available today is the 381 oz motor. http://www.kelinginc.net/KL23H2100-35-4B.pdf . The inductance is much lower then the 387 and will allow more torque at speed. At this time it has the highest torque/lowest inductance and the best fit for the G540.


The difference in cost is minor. My suggestion for X2 would be the 381 oz on all axis mated with a G540. Granted its a bit of an overkill on the X and Y but for a few dollars more who cares!


Jeff

[Jeff-Birt]

The biggest motor that your drive will run is seldom the best motor for an application. That is kind of like thinking the biggest engine that will physically fit in your car's engine compartment is the best. You stepper should be matched to your machines requirements and then the drive/power supply should be matched to the motors.

Motors that are wound (or just rated) to match the maximum specs of a popular drive should be a red herring.

[Jeff Davis]

" Motors that are wound (or just rated) to match the maximum specs of a popular drive should be a red herring."

In this particular case I would still keep the "Red Hearing"


Will using the 381 oz decrease his performance in torque or speed?

Will using the G540 not save him money compared to using standard Geckos most use for the reliability factor?

I have seen it happen many times here on this forum where one gets a smaller mill to learn on then upgrade to a larger mill later. With the package above he will have 90% of the equipment to make the upgrade.

Change can be difficult for people to accept. But there are a few things that drive it. Cost, quality, ease of use are just a few. Innovation based on a changing world should be dissuaded?


" biggest engine that will physically fit in your car's engine compartment is the best. "

I can tell you never owned a "GMC Sonoma". I was almost killed 3 times because it did not have enough power to enter traffic on the highway! So "yes", if the cost is reasonable give me the power!

Views expressed above are not to be considered those of this fine community but solely the personal opinion of the writer!

Jeff