70-plus servos found in box

[spoiledbrat]

I found these at a local scrapyard; the product of a liquidation. These Baldor servos do not have encoders. The reduction gear is 10:1 ratio. The output shaft of the servos are splined to facilitate the gearbox simplicity.

The servo worked when hooked up to 14.4V leads, and the brushes on them are fine. The only neglect they have recieved is sitting outside at a scrapyard in a cardboard box. I found that the machine screws are slightly rusted. Are these motors worth anythin to anyone? I almost want to go scoop them up, and pass the deal on to everyone, but without encoders built in, one would have to place an encoder somewhere else on the machine.

The backlash at the output shaft of the gearbox seems to be negligable. I have no way of measuring it, but I could feel no slack using my fingers to backdrive the servo.

1/8 HP, 180 V @ .65 Amps

Let me know if anyone would be interested in these

[Nono]

Hey that is cool. Could you tell how many inch pounds or inch oz they are? I think there are quite a few people that would be interested. I would be for instance.

[Luslugger]

What would it cost to get 2 to 6 of these
Bob 502-452-9851

[JFettig]

After the head, you only have 250rpm at about 480oz-in. I do not know what the gear ratio is inside there, but if its higher than 1:4 these servos wont be too useful for most applications.

Jon

[spoiledbrat]

Indeed, they are 10:1 ratio. The gearbox is 250 RPM max, the motors themselves; I do not know. I think that since the spec-plate on them says 180 Volts @ 0.65 amps, not many of us here would be able to get the max speed out of them. If the gearbox were discarded, could we not use a standard coupler to attach it to a leadscrew? An encoder would have to be added somewhere. I would put it on the motor shaft (being low profile, the coupler would still fit on the end).

Ah, well. I think I might go get a couple more for now, as they come with steel electrical boxes for the circuitboards that came with them (resolver junk?).
Thank you all for your guidance.

Rob

PS: If anyone is still interested, I will post these in the classifieds. If they are not useful to anyone, I will not bother.

[Luslugger]

I think these would work for moving acme screws on old machines. I don't know how to do it yet, but I would try to make the feedback come from a linear scale or an encoder on the slides. In some cases a liimit switch could be used to stop within .010.

[Chris D]

If you can get more, I would be in for a few, after all the price is right!

Chris