need help finding specs on motor

[CNC Darren]

Hi all,
I got 3 free stepper motors tonight. I belive NEMA 23 frame they are made by Japan Servo and have a number of KH56KM2-017 and the number of 7130 below that. Anyone know the voltage and amps for these?

Thanks
Darren

[CNC Darren]

here are a couple of pics, Does Japan servo use a code of some sort that could tell me the amp rating and the voltage for these?

Darren

Japan Servo was no help they couldnt release the specs because they are custom made for a customer, I know the customer is SHARP as i pulled these motors out of a SHARP 3062 copier two nights ago.

[CNC Darren]

ok update, i pulled another motor today and got the driver circuit from one of the copiers. The pdf for the driver chip is here http://prelcoparts.com/datasheets/Pr...TK6712BMK4.pdf , this one is also is on the board http://prelcoparts.com/datasheets/Pr...TK6713BMK3.pdf . I found another stepper hooked up to the board same frame size but shorter in length. so now i am guessing that the motors are under a 3 amp rating and from what i can figure out on the schmatics motor voltage is somewhere in between 18-42 and since 90% of the stuff on this copier runs at 24V i'm guessing thats what they are. I have run one of these motors on my hobby cnc 3 axis chopper drive and it ran fine at 12v and 1.2A tho seemed weak because i could stop the shaft somewhat easy. the big question still is what amp draw are they? what would happen if i tried higher amp, burn a coil up if i went to high?

Darren

[Novec]

You'll find some info on the motor series over at Japan Servo. Measure the resistance on each phase and you should be atleast a step further. There's always the possibility of mailing the company, too.

[CNC Darren]

i'll check for the coil resistance. I emailed the japan servo site and they said they couldnt release info about the motors because they are custom built for the customer(SHARP) and they cant open the file unless the customer requests it.

[ramsberg]

Any progress on the data-spec-hunting on the Japan-Servo motors?
I got hold of 3 of these too.

Tell me if you find anything

/ Ramsberg
Sweden

[Krashlnd]

I aquired 3 Vexta 2-phase Model PK233-02BA Stepper Motors ( 6-wire ).
It says they are 1.8 deg. 7.5 ohm DA 0.8A. Will these run a small CNC Router? I was gonna build the one HobbyCNC sells plans for? What do you think. Ill throw in a pic of them.

[Halfnutz]

Those Vextas will runfine on the hobby, as long as you can get the current doown around one amp Theyre rated .85A Bipolar or 1.2A Unipolar per phase. They are 0.121 oz/inSQUARED. I dont know what that means exactly, all this info is here
http://www2.catalognavigator.com/ori...ktoname=&pane=

That is Oriental's spec page. Good luck

[Krashlnd]

Sounds Great. I wonder If a pc powersupply would work. If i can get the amps down. ?

[Krashlnd]

Oh ya, Someone chime in on this one. What does 0.121 oz/inSQUARED.
http://www2.catalognavigator.com/ori...=spec&filter=0. it says Rotor Inertia (oz-in2) here are the specs 0.3 oz-in2

[Halfnutz]

OK, I see, it is above the rotor inertia, holding torque it says is 2.3/2.9 LB/IN. But I still dont know what that is in in/oz. Maybe just multiply the 2.3 or 2.9 time 16. Thats about right for those motors, 30-50 in/oz, I would imagine thats probably what it is.

[Krashlnd]

Not bad for an ebay find. 3 steppers for 28 bucks with shipping. Total= $28.00. These are new motors. If I bought at the website where the specs were they were 56 bucks ea. No to build a controller board. What do you think about this one: http://www.uashem.com/trafid-190-35.html
Steve