any 700...1000+ oz.in. [err, 400..600 oz/in should be enough] servos available

[ints99]

Hi,
do you know any source for 700..1000+ oz.in. servos w. decoders suitable for Gecko usage? For affordable prices

I look something for my 1000W spindle Sieg Super X3 mill... Should be suitable torque range? Or sounds more like overkill torque rating?

Regards,
Indrek

[Evodyne]

Hi,
do you know any source for 700..1000+ oz.in. servos w. decoders suitable for Gecko usage? For affordable prices

I look something for my 1000W spindle Sieg Super X3 mill... Should be suitable torque range? Or sounds more like overkill torque rating?

Regards,
Indrek

Indrek,

Hello! I'm not sure what is appropriate for your mill. Check the classifieds here at the site and see my add for the E-712 ElectroCraft 1500 oz-in servos. All of the specs are there: look and see. These are 300 oz-in continuous and peak at 1500 oz-in at 45 amps. If you derated the supply to only supply 20 amps (to math the Gecko's maximum output) you would still be able to pull 600-700 oz-in peak.

Given that you need to speed reduce a servos speed by a factor of three or four, you are automatically boosting the torque at the screw by the same factor. In other words a 150 oz-in continuous rated servo with a 3:1 reduction is going to give you 450 oz-in of torque to the lead screw. and the screw gives even more torque multiplication itself.

Lance

[ints99]

Sorry, it looks like I littlebit overshoot the specs

I think, as 600 oz.in. holding torque steppers-direct drive should be considered to be suitable referring to Industrial Hobbies kit, but i liked probably more servo setup, I need 1200 oz.in. max torque at 1000 rmp by servos, counted on leadscrew side. This means, if I will use 3:1 reduction (would it be wise amount?), something about 400 oz.in. 3000 rmp servo should be suitable... Probably?

As 2000 rmp servo seems to be more realistic/common, probably i must still calculate with 2:1 reduction, and 600 oz.in 2000 rmp motor?

The Z axis of course of Super X3 is missing gas strut (and any other counterweight) and even 2:1 (or close, don`t have had time to count the teeths on gear jet) reducted manual rotating despite of careful cleaning/lubricating etc. of the axis is very hard/heavy.