Re: [CAD_CAM_EDM_DRO] Re: Need advice on stepper

turbulatordude wrote:

> Hi Dominic,
>
> I don't see how you get the same tourge from the different motors. ?
>
>
>>SST58D5821
>> 274.4 oz/in holding
>
>
>>SST58D5831
>> 274.4 oz/in holding
>
>
>
> or, where you get the different voltages you list.

do some math?

SST58D5821 is 4.8V 2A 196oz/in
SST58D5831 is 3V 3A 196oz/in

both motor have 8 leads, coil can be bridge in parallel or serie.
According to the doc, at the last page, when you bridge coils specs are
modify as follow:

Serie:
Volts : x 1.4
Currents : x 0.7
Resistance : x 2
Inductance : x 4
Torque : x 1.4

Parallel:
Volts : x 0.7
Currents : x 1.4
Resistance : x 0.5
Inductance : x 1
Torque : x 1.4

data sheet here: http://www.shinano.com/pdf/SST58D.pdf

1. Which one is the best choice for my setup
2. Bipolar-serie or bipolar-parallel
3. should I use 0.9deg stepper?
4. Does 24VDC@8.5Amp is a good choice for Xylotex driving 3 motor like that

Thanks,

Dominic Pageau