Topic: Replacing all the stepper motors
I'm curious what the specs are on the stepper motors. I'd like to have an extra set for when I rebuild the gantry setup with Lawsy's bearings.
Can anyone point me to the right ones at cncsuperstore.com?
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SoliForum - 3D Printing Community → Hacks & Mods → Replacing all the stepper motors
I'm curious what the specs are on the stepper motors. I'd like to have an extra set for when I rebuild the gantry setup with Lawsy's bearings.
Can anyone point me to the right ones at cncsuperstore.com?
So I don't know the specs off hand, but here's one thing you can do. Use the serial numbers on each motor to get the respective data sheets. From that you can determine the torque. The only choices you have to make for any stepper motor purchase assuming size is fixed is the torque and step angle. Torque should be equal to or greater than what's already in the machine. The stock motors are 1.8 degrees of rotation per step, but 0.9 step angle motors are also available. They'll give you double the resolution at the same microstepping.
Edit: it goes without saying that you're going to want to stick with 5mm cylindrical drive shaft motors unless you plan on exchanging a lot of hardware.
So I don't know the specs off hand, but here's one thing you can do. Use the serial numbers on each motor to get the respective data sheets. From that you can determine the torque. The only choices you have to make for any stepper motor purchase assuming size is fixed is the torque and step angle. Torque should be equal to or greater than what's already in the machine. The stock motors are 1.8 degrees of rotation per step, but 0.9 step angle motors are also available. They'll give you double the resolution at the same microstepping.
Edit: it goes without saying that you're going to want to stick with 5mm cylindrical drive shaft motors unless you plan on exchanging a lot of hardware.
I thought that all this information was under the Solidoodle stickers and I wasn't really keen on taking those off. :-/
It's on the Solidoodle stickers. The motors have serial numbers written below the word "SOLIDOODLE." Use that to find the information about the motors currently in the machine.
Oh, it's below. OK.. I can't see that small usually so I'll break out the magnifiers
I hate the idea of having to order them from China... but I'd like to have some spares to build out my Lawsy bearing carriage.
You can get atepper motors just about anywhere... But most are probably manufactured in China. Amazon sells all kinds, as well as Pololu, sparkfun, RepRapDiscount, etc...
Oh, I know they do.. but i don't want to get the wrong ones. and the nema 17 seems somewhat hard to find.
Nema 17 motors are definitely the most common ones on eBay... $20/ea or thereabouts is the going rate.
Just search "nema 17" in eBay and you'll see!
I don't know why you have a preference for that site but if you are flexible on the store, here are some that I have ordered. Disclaimer is that I have yet to fire them up and test it but all the specs line up and they are higher torque than the stock motors.
http://www.omc-stepperonline.com/3d-pri … -p-18.html
http://www.omc-stepperonline.com/nema-1 … -p-59.html
You can also order them with custom length cables and connectors, but I didn't realize that until after so I got bare wire leads. I think epacket is not available on packages as big as 4 motors so I had to go with DHL. It was about $43 for all the motors, but another $30 in shipping. But I did get it VERY quickly, I think it was 3 or 4 days from china to east coast USA.
Only because they've delivered on time, sealed brand new, and it's been easy.
I really don't like ordering from China or eBay. Yet it seems like no option.
I've got probably 50+ small part orders from Chinese ebay sellers without issues. Epacket shipping is great when you know that you need some small part for a build, but you plan it out far enough that you don't mind waiting 7- 15 days, although it usually comes towards the short end of that time. Give it a try on a less than $5 order and I bet you won't be disappointed. Nearly everything on your printer started its life in China anyway, so why not just cut out the middle man?
My only way of trying to explain it is that I have treatment- refractory Obsessive Compulsive Disorder... And eBay is an issue for me
Treatment-refractory means you've had every treatment possible,multiple times, and no improvement
Logically I know they all come from the same place. But logically I know there is no reason I can't touch that light switch. Doesn't make it possible.
Anyways, the goal is to build the lawsy gantry entirely separate so it can be a plug and play replacement. This the steppers.
Sounds heavy sanguish. Do what you need to do!
Looks like you've got what you need.
Also sorry about the ebay plug, totally unnecessary. I keep ending up there because of the dearth of good alternatives in Australia:
* Local suppliers have a limited range and/or are expensive (I do find some things, bilbycnc.com.au and modfab.com.au I have bought from)
* US / US-centric suppliers don't ship here or charge a lot to do so
Overall my experience has been similarly positive to VBR's.
Sounds heavy sanguish. Do what you need to do!
Looks like you've got what you need.
Also sorry about the ebay plug, totally unnecessary. I keep ending up there because of the dearth of good alternatives in Australia:
* Local suppliers have a limited range and/or are expensive (I do find some things, bilbycnc.com.au and modfab.com.au I have bought from)
* US / US-centric suppliers don't ship here or charge a lot to do so
Overall my experience has been similarly positive to VBR's.
First, I didn't explain for any reason the than I am open about it to everyone.
And I know eBay is good for stuff, if I can wash it, I buy from them.
Still can't find them store wise is the problem. And I really want a very 'drop in replacement' Lawsy thing.
I can't imagine finding stuff in AUS. It took a me a week to find a power bar in Jamaica once. Every one the resort had to borrow had the ground cut off. (and they had grounded plugs!)
I have found decent success getting small motors from Automation Technology, something like this: http://www.automationtechnologiesinc.co … 3d-printer
I am not by my 'doodle so I can't tell you what the stepper values should be, and their selection isn't the best, but they are chicagoland local (I could pick my stuff up there if it wasn't for my work schedule). Same with Inventables, though their selection for NEMA 17s is even more lackluster than ATs.
I try to shop local whenever I can just because I am compulsive about working on stuff so if I don't get it in the 3-5 day window when I actually want to work on the project it ends up waiting another month.
I don't know why you have a preference for that site but if you are flexible on the store, here are some that I have ordered. Disclaimer is that I have yet to fire them up and test it but all the specs line up and they are higher torque than the stock motors.
http://www.omc-stepperonline.com/3d-pri … -p-18.html
http://www.omc-stepperonline.com/nema-1 … -p-59.html
You can also order them with custom length cables and connectors, but I didn't realize that until after so I got bare wire leads. I think epacket is not available on packages as big as 4 motors so I had to go with DHL. It was about $43 for all the motors, but another $30 in shipping. But I did get it VERY quickly, I think it was 3 or 4 days from china to east coast USA.
Do you happen to know which connectors you would have ordered? And was this for a Rumba or the stock board?
I have a RUMBA and unfortunately I don't know the name of the 4 wire connectors that fits that board or the stock board. I ordered a rumba from reprapdiscount and it came with a lot of connectors. If you got it from there, you could crimp it yourself. Maybe ward or someone will chime in and tell you what connectors you should order if you do not want to use the screw terminals.
https://www.pololu.com/product/1903
https://www.pololu.com/product/1930
http://www.amazon.com/gp/aw/s/ref=is_s? … rvb0CYS2RW
I ended up ordering a new Y motor from the place TheBaron suggested.
They didn't have a great selection.
I'd order from Solidoodle. But they've taken 15 days to try and ship me 1 Y motor. And I know it'll be the same crap.
Wish I could find the right motors easily. I'm out of my depth on these though.
Good luck!
I used to work at a surplus store and would stock up on stepper motors whenever we got something new in. I should probably go through my box of steppers (it's one of those big boxes for holding reams of paper) and sort out what I have. Might save me (or a forumite) some anguish down the line!
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