Is it possible to disassemble the stepper motor to replace the shaft? I want a longer shaft and was hoping not to mess with couplers...

-------------------- Tech Support Tips/Troubleshooting/Common Issues --------------------

NEMA 17 Mounting Holes

To clarify, the 68 oz.in Stepper Motor uses the NEMA 17 mounting holes. The motor size of this stepper motor is slightly smaller than what you would expect for a NEMA 17 motor size width and length. Try looking at the datasheet for more information about this motor's dimensions.

Rated voltage shows 3V but when plugged onto DF Robot Dual Stepper Motor Driver Shield for Arduino the motor will not start with a input tension below 12V.

So are they 3V or 12V ???

There isn't any chance of an actobotics mount for any of these in the near future, is there? I was just thrilled a couple of days ago when I noticed the Actobotics parts show up on Sparkfun. I've been planning a project for months, but I've already bought a servocity gearmotor and the Actobotics mount for it, and it won't work for my application. I really think a stepper would be best. I'm going to try to laser-cut something out of acrylic, but it wouldn't be as good as an aluminum part.

Does anyone know how much this motor weighs?

I don't know if i should be posting this here or on the Big Easy Driver Page, but i'm hoping somebody will be able to provide me with some insight. I have been able to get it running using the example provided on Brian's website. The issue i am having, is that the motor will only run smoothly when the current is being limited much lower than what the motor is capable of. When i adjust the current limit higher the motor will keep losing power entirely (i.e. the shaft can be freely spun until it starts spinning again). Is this an issue with the supply i am running it off of? The power supply i am using is a 19V supply rated at 4.7 amps.

SO whats the deal, how do you power/control this thing? The big easy supplies enough current but too much voltage for this stepper motor

I have some of these in my reprap, they are great little steppers. Plenty of torque and .9 deg steps make these great for cnc applications. I'm using the Pololu A4988 stepper driver and while they were a pain to tune, once they are tuned they operate very well.

I got this stepper motor to work using an L297N. It missed steps at the recommended 3V. It happened to work best at 3.5V or higher. What's the danger in using a higher voltage? I'm going to start using an Easy driver and I know it handles much higher voltages. Is it possible to use too much for the stepper? I'm not worried about the driver. Thanks

Dear: Sparkfun I am trying to build a delta 3d printer and I need a nema 17 for the job. I think I will buy this nema only because it was the best nema I could find with the right specifications for the job. I think I will buy it. Thank you for the awesome deal. From: Noah

SparkFun, isn't it time to leave the dark ages behind, and move to the 21st century? :-) FTW, in civilized countries 68 oz.in = 48 N.cm.

I have a "Big Easy Driver" and one of this "Step motor", the Rated Voltage of the step motor is 3V and the Driver Power is between 8 to 30V, so i can't make it work together???? thank for the answer.

With a proper filament drive gear, this motor would be perfect for a direct drive extruder for a 3D printer.

So I am currently looking at buying two of theses along with two of these http://www.pololu.com/product/1182 but I am confused at how to power these. I was thinking of using my laptops power supply and breaking it out with two female plugs but I have a couple of concerns. First being will I damage anything. Also The computer power supply is 7.7 amps at 17.7 volts I understand the voltage is fine But I am concerned at the current I know the point of driver is to limet current but I just want to make sure it won't burn it out?

Hello, do you have any 3D model (step/Iges) available? Thnaks

Has anyone attempted to use this motor with the Seeedstudio Motor Shield V.2.0. I connected this motor and get a lot of chattering and very little turning of the motor. I am not sure if this is a sign of being under powered. I want to use a 4S LiPo battery that puts out 2200mah at 14.8 volts and has a automatic low voltage shutoff that I designed to kick in at 12.3 volts. I am not sure if the Seeedstudio motor shield can drive this motor. I am an ancient experimentor. But this is the first time playing with stepper motors. When I started experimenting, my high sholl instructor consider transitors a passing fancy that would never replace tubes. Any constructive help would be appreciated.

Hi guys, I use this motor together with the Big Easy Driver and everything works quite well besides: Regardless of whether I use microstepping or not, the motor just turns at a full step. Principally microstepping is working: I have to trigger the the correct amount of steps to get it turn the desired angle and I also can hear that the motor is changing its sound when I shift it by a single step (in microstepping mode). So the driver seems to work, but the motor does not turn every microstep, but just every fullstep. E.g. in the 1/8 microstepping mode I have to trigger 8 steps until the motor moves for the first time. But then it travels the correct 0.9 degrees. The same problems seems to appear for every other microstepping value, so I need to trigger 4 steps in the 1/4 mode to see it turning. In fullstep mode of course everything works as expected. Does anyone have an idea about this, or do I just don't grasp it? Cheers, Chris

Someone bought over 100 of these at a clip because the inventory was well over 100 an now it's 0.

which driver or interface do i need from sparkfun using ROB-10846 and arduino uno - edinson

tell how to interface ROB-10846 3 volts with arduino uno 5 volts which driver you recommend from spark fun do i need - thanks - edinson

I'm new to this whole stepper thing. Want to use this particular one to shuffle some candy pieces around. I'm using the Big Easy Driver. I'm controlling it with an Arduino (on a breadboard at 16 MHz). The pulsing routine looks like this:

#define CLOCKWISE LOW
#define COUNTERCLOCKWISE HIGH

void stepperSteps( long n ) {
  digitalWrite( DIR_PIN, n < 0 ? COUNTERCLOCKWISE : CLOCKWISE );
  digitalWrite( ENABLE_PIN, LOW );
  n = abs( n );
  for( ; n > 0; n-- ) {
    PORTB |= _BV(PINB1); // WAY faster than digitalWrite
    delayMicroseconds( 50 );
    PORTB &= ~_BV(PINB1);
    delayMicroseconds( 50 );
  }
  digitalWrite( ENABLE_PIN, HIGH );
}

I ENAble the board, set direction, pulse using direct bit manipulation to get it as fast as possible, then unENAble the board. I tuned the current to the motor and all seems to be pretty happy.

The BED docs say pulses should be 10 µsecs. If I do that, the motor stutters. I assume because there just isn't enough time between edges. 50 µsecs is the sweet spot I've found. Upwards of 100 µsecs or longer and the motor stutters again. When the motor stutters, I try upping the current thinking maybe it needs some help holding between pulses. That just makes the motor and the BED super hot (chip gets to 150ºF, motor is barely comfortable to hold) and generally doesn't help the motor move well at all. At 50 µsecs, the chip temperature drops to 80-ishºF.

Anyone have a solid reason why 50 µsecs would be the sweet spot for making everything move smoothly? Just curious!

Could I use the EasyDriver Stepper Motor Driver for this motor? It is for a desktop CNC machine.. Thanks

Where may I purchase gear wheels and pulleys for the NEMA 17 form factor stepper motor? Strangely, I am having a difficult time locating them on the Net. Thank you.

I am building my own board for really simple operation. I have TI 8835 H-bridge chip with 3.3V supply. It can only drive 1.5 A per phase. Will it be able to drive this motor? Thanks!

I am having some trouble with this motor. I am using a Pololu DRV8825 as my driver. http://www.pololu.com/catalog/product/2132

My motor is able to turn cleanly one direction (counter clockwise), but the other direction is not very consistent. Sometimes the motor shakes violently and it doesn't rotate as far as it is supposed to. I have wired the motor to the driver in several different configurations, but none have solved the problem. The motor is running off of 12V and set to about 1.4A.

If anyone had any thoughts, I would appreciate it.

Would these work with https://www.sparkfun.com/products/10267?

Will these stepper work with these boards:

http://hackspark.fr/media/catalog/product/cache/2/image/ff5cb8349b65cb691ec1bdf26c229aff/s/t/stepmotordiver2_1.jpg

Has anyone had any luck running these with the Snootlab Rotoshield? I'm having issues with them changing direction sporadically when commanded to run forward for X steps.

unipolar/bipolar? I see 4 wires in pic...

bi-polar or unipolar?

Is this motor bi-polar or uni-polar?

Ditto - I'm sweating on these also.

Anyone knows when they will be in stock again ?

Has anyone run these at 24v? I'm putting these in a mendelmax and I'll have a nice beefy 24v switching supply for the heated bed, as well as a 12v switching for everything else.

I'm using a sanguinololu board with 4 A4988 drivers. I'll start them off at 12v, but if anyone has run them successfully at 24 I'd like to know.

Hi, what will possibly be the best bridge for that one ? L298 ?? any other suggestion?

Figures, as soon as I'm ready to order 5 of them, you sell out...

Any word on when these will be available again?

So what is correct for this motor? The datasheet on the spark fun site or the data from the manufacturers website? About 10oz/in difference between the two!

Has anyone got max RPM figures?

I am looking into building a small CNC Mill and I was wondering if 58 oz-in would be powerful enough. I like the resolution (400 steps/rev) on these. I would rather use these than the 125 oz-in ones if I can because of the resolution. Thanks for any help or advice.

I checked the Datasheet and the website (http://www.wantmotor.com/ProductsView.asp?id=157&pid=75&sid=80) and I can't seem to find what the mounting holes are tapped for? I'm guessing an M3 or M4 but not sure on the thread pitch. Can anyone tell me so I can find the right bolts/screws.

what wire gauge are the wires?

Never mind just read a link with data sheet and its AWG26

Any idea when they will be back in stock?

just buy a 1000 of these, they go away so fast...

Another question for the easy driver: this motor is rated for 3V while the easy driver runs from 7 to 30V is that an issue?

This motor can handle with easy driver? or its best a big easy driver consider that

the motor Rated Current: 1.7A/Phase

easy driver has Adjustable current control from 150mA/phase to 750mA/phase

big easy driver has 2A/Phase Max

I need precission and velocity, and less torque

The title states 58 oz-in holding torque. But the description and datasheet state 48 N-cm, using the link provided by RobertC, converting 48 N-cm = 68 oz-in. Is the title a typo?

Is the holding torque 58oz.in or 58 N.cm?

What about weight information?
you know, shipping concern :)

Neet. How will this handle on the EasyDriver? Considdering the Easy Driver has a max of 750 mA and this being 1.7A

Could you please recalculate the estimated holding torque for the new stepper motors listed to give out the same data as the first one you had in stock for some time.
the old one reads Holding Torque : 2.3kgcm
Whats The kgcm on the new ones.

I calculate a 1.6" face, would this be considered NEMA 17 ?