[swiftden]

Well after reading numerous posts i went looking around and picked up an old photocopying machine for $5.00(Australian) from a scrap yard. In side i found the following motors and i have not finished pulling it apart yet!. Photo shows 5 motors so far. Going from top left to right and then 2nd row left to right are as follows.

1.) STEP-SYN stepping motor Type 103g714-1741, dc 2.56v, 3.2a, 1.8deg/step, 127k94530, lot no .07428, made in japan(sanyo denki co ltd.

2.)step motor 127k94840 STH-54D403, 1.8deg/step, 8v, 1.2a, thermally protected, No. 26431, Shinano Kenshi co ltd japan.

3.) same as 2 except for 127K80020 STH-56D309, 2.88v, 2.4a , impedance protected.

4.)type 103-548-0250 127K94511 , 3ohm 1.8 deg/step sanyo denki co japan

5.) Sayama geared motor , 127K94540K1 RB-35CMFJX6 2606, made in japan

Are any of these any good ?? how strong ??

[swiftden]

Some one here must know something about some of theses motors will the biggest one of them have enough torque??

[Al_The_Man]

In the Absence of any other info, you have the voltage rating, applying this DC voltage should cause the rated current to flow and then do a torque test by attaching a lever of a measured length to the shaft and use a spring balance to see what torque is required to pull it out of the holding point, this will be close to the rated holding torque of the motor.
Al

[ESjaavik]

IMO they are old and have a low power/weight ratio and are very speed limited.
They are however very useful for setting up a test rig to learn more about how steppers work. Do that, and build your own experiences rather than a kind-of-working
machine. The one(s) with low voltage rating(s) will be less speed limited. You can "supercharge" them by using a higher drive voltage. Search the forum to find out how.

[JFettig]

if that step-syn motor is a nema34, its probably a good 250oz-in, I was selling some ones almost identical but a bit bigger and 4.7A that were around 400+oz-in

Jon

[Jason Marsha]

Swiftden,
Do you remember the model copier you got those steppers from?

Jason

[ynneb]

I've Been Scrounging but dont know what i have!!!

Herpes simplex #5 ?

[swiftden]

Ive put this project on hold while i build my house worst of luck
And im not sure what the photocopier was but im still looking for bits and pieces