8 ms·

Does anybody have an address where to shop servos and gearboxes online? Or at least find references through filtering for specific torque/rpm/power/driver resol

by rq1 4y ago

Does anybody have an address where to shop servos and gearboxes online? Or at least find references through filtering for specific torque/rpm/power/driver resolution... etc.? I hardly can find something worth looking at outside of ebay. A lot of websites don't have public price lists but ask you to fill forms and receive quotes, but I don't want to order thousands of these (yet?)...

abakker 4y ago
If you are doing servos and not well versed in these things, I highly recommend clearpath servos from teknic. The wiring is easy and their tuning support is very good (if the auto tune doesn’t work). If you need more power, or AC servos, I suggest DMM Dyn4 drives and servos. Finally, if you need gearboxes, stepper online has good ones that have held up well for me. Source: have built/converted several CNCs.
- jbay808 4y ago
  I'll second DMM. Unlike most servo companies, they post their pricelist, making it easy to figure out which tradeoffs you need to make to stay on budget: https://dmm-tech.com/pricing.html https://dmm-tech.com/pricing.html
  - abakker 4y ago
    Another thing as a hobbyist: AC servos can save you money vs high performance DC power supplies. they also simplify some kinds of wiring. in a typical 3 axis mill with 3 motors of hobby scale, you might buy a teknic IPC5 power supply and a a power hub and a bundle of cables and a backup 24v din rail supply for about $370 after tax/shipping. for a DMM DYN 4 setup, you just run AC power to drives with standard wire and terminals. If your control box is tight, it can also pay to use AC servos because then you don't have the power supplies in your box. They may be more expensive / motor but can be way easier to deal with later.
slicktux 4y ago
Try servocity…
diydsp 4y ago
https://www.omc-stepperonline.com/ https://www.omc-stepperonline.com/ https://www.pololu.com/ https://www.pololu.com/
krisoft 4y ago
> Does anybody have an address where to shop servos and gearboxes online? Depends on what kind you are looking for. In the hobby sphere I know about Servocity, Hobbyking, Pololu, adafruit. If I were looking for something bigger, more professional range I would check if maybe Farnell or RS Components have it.
Youden 4y ago
Assuming you're talking about AC servos typically used for industrial equipment (and not the DC kind used for robots or RC aircraft), there are kind of two routes you can go. On the easy hobbyist route, you can get the parts from a nice online store with email support like DamenCNC [0]. You'll need to read the spec sheet to find the speed/torque/resolution though. On the harder route, you collect a bunch of spec sheets, figure out what features you want, come up with a list of SKUs, find a seller on Alibaba, AliExpress or eBay and ask them for a quote. Not all of them will be responsive but I didn't find it too hard. For a vague idea of the price, you can usually get the order of magnitude from the listings on the sites I mentioned. Ultimately though, servos are treated as industrial equipment and take a lot of work for a hobbyist to figure out. If you're not buying a pre-made kit sold by a hobby store, my suggestion is that you should know the manual like the back of your hand and be able to clearly visualise the full installation process step-by-step before you buy anything, as there's a lot of stuff that can trip you up and a lot of ways you can even kill yourself. Servo drivers don't have nice AC wall plugs for example, they have screw terminals, so you need to be able to wire mains voltage electricity without giving yourself an electric shock or causing a fire. The manuals usually say you should get a professional electrician to handle it. All the cables are non-standard and usually per-series so you need to make sure you buy the right ones. The list goes on... "Surely I just feed it electricity and it spins" you might think but unfortunately it's not that simple. These motors are deceptively complex things. As others have mentioned though, Teknic is a thing. Those motors are much simpler, they're designed as drop-in replacements for stepper motors and they have an easy to use online store. I'm not a fan though, for a similar dollar amount and several orders of magnitude more stress and time, you can have high-end A3 servos from Delta with more features than you'll ever need. The encoder is 24-bit! You'll never be able to accurately use that resolution without precision engineering and temperature control but it's nice to know it's there. [0]: https://www.damencnc.com/en/ac-servo-drive-400w-asd-a2-0421-m/a829 https://www.damencnc.com/en/ac-servo-drive-400w-asd-a2-0421-...
- abakker 4y ago
  I'll say for completeness here (having mentioned Clearpath servos in another comment) that DC clear path servos are totally fine for "semi" industrial uses. I have them on a bed mill I am restoring, and with a good ballscrew I can easily move a 300lb Z axis at 200inches/minute without torque saturation. That said, they are simple because they are limited. They give you only 3 inputs: Enable, Step, Direction. they give you one output called "High level feedback" and BOY OH BOY is it high level. it is basically only useful for basic error detection. In the software you have pretty cool tuning options - a visual oscilloscope, the RAS feature (which is really good for DIY CNC machines), and encoder resolution selection. A DMM, or especially a Delta, will give you a lot more IO to the motors, and a lot more stuff to play with. E.g. direct access to the encoder position (even if the motor is not active), many more error states, warnings, etc. and some more condition specific tuning. Last bit on clearpaths. I've been talking about the SDSK series motors. those are controlled from an external controller through pulses like stepper motors. They have other series of the same motors that interface differently. Specifically, they have some motors designed to interface with microcontrollers and have a really nice set of C libraries for doing all the basic motor control stuff. If you are building things like conveyor belt automations or material handling stuff, the clearpaths are very much an "easy button" compared to nearly every other kind of motor on the market IMO.
iancmceachern 4y ago
I second teknik motors, also check automation direct,misumi, or even ebay/Ali express

by rq1 4y ago

abakker 4y ago

If you are doing servos and not well versed in these things, I highly recommend clearpath servos from teknic. The wiring is easy and their tuning support is very good (if the auto tune doesn’t work). If you need more power, or AC servos, I suggest DMM Dyn4 drives and servos. Finally, if you need gearboxes, stepper online has good ones that have held up well for me. Source: have built/converted several CNCs.

jbay808 4y ago
I'll second DMM. Unlike most servo companies, they post their pricelist, making it easy to figure out which tradeoffs you need to make to stay on budget: https://dmm-tech.com/pricing.html https://dmm-tech.com/pricing.html
- abakker 4y ago
  Another thing as a hobbyist: AC servos can save you money vs high performance DC power supplies. they also simplify some kinds of wiring. in a typical 3 axis mill with 3 motors of hobby scale, you might buy a teknic IPC5 power supply and a a power hub and a bundle of cables and a backup 24v din rail supply for about $370 after tax/shipping. for a DMM DYN 4 setup, you just run AC power to drives with standard wire and terminals. If your control box is tight, it can also pay to use AC servos because then you don't have the power supplies in your box. They may be more expensive / motor but can be way easier to deal with later.

slicktux 4y ago

Try servocity…

diydsp 4y ago

https://www.omc-stepperonline.com/ https://www.omc-stepperonline.com/ https://www.pololu.com/ https://www.pololu.com/

krisoft 4y ago

> Does anybody have an address where to shop servos and gearboxes online? Depends on what kind you are looking for. In the hobby sphere I know about Servocity, Hobbyking, Pololu, adafruit. If I were looking for something bigger, more professional range I would check if maybe Farnell or RS Components have it.

Youden 4y ago

Assuming you're talking about AC servos typically used for industrial equipment (and not the DC kind used for robots or RC aircraft), there are kind of two routes you can go. On the easy hobbyist route, you can get the parts from a nice online store with email support like DamenCNC [0]. You'll need to read the spec sheet to find the speed/torque/resolution though. On the harder route, you collect a bunch of spec sheets, figure out what features you want, come up with a list of SKUs, find a seller on Alibaba, AliExpress or eBay and ask them for a quote. Not all of them will be responsive but I didn't find it too hard. For a vague idea of the price, you can usually get the order of magnitude from the listings on the sites I mentioned. Ultimately though, servos are treated as industrial equipment and take a lot of work for a hobbyist to figure out. If you're not buying a pre-made kit sold by a hobby store, my suggestion is that you should know the manual like the back of your hand and be able to clearly visualise the full installation process step-by-step before you buy anything, as there's a lot of stuff that can trip you up and a lot of ways you can even kill yourself. Servo drivers don't have nice AC wall plugs for example, they have screw terminals, so you need to be able to wire mains voltage electricity without giving yourself an electric shock or causing a fire. The manuals usually say you should get a professional electrician to handle it. All the cables are non-standard and usually per-series so you need to make sure you buy the right ones. The list goes on... "Surely I just feed it electricity and it spins" you might think but unfortunately it's not that simple. These motors are deceptively complex things. As others have mentioned though, Teknic is a thing. Those motors are much simpler, they're designed as drop-in replacements for stepper motors and they have an easy to use online store. I'm not a fan though, for a similar dollar amount and several orders of magnitude more stress and time, you can have high-end A3 servos from Delta with more features than you'll ever need. The encoder is 24-bit! You'll never be able to accurately use that resolution without precision engineering and temperature control but it's nice to know it's there. [0]: https://www.damencnc.com/en/ac-servo-drive-400w-asd-a2-0421-m/a829 https://www.damencnc.com/en/ac-servo-drive-400w-asd-a2-0421-...

abakker 4y ago
I'll say for completeness here (having mentioned Clearpath servos in another comment) that DC clear path servos are totally fine for "semi" industrial uses. I have them on a bed mill I am restoring, and with a good ballscrew I can easily move a 300lb Z axis at 200inches/minute without torque saturation. That said, they are simple because they are limited. They give you only 3 inputs: Enable, Step, Direction. they give you one output called "High level feedback" and BOY OH BOY is it high level. it is basically only useful for basic error detection. In the software you have pretty cool tuning options - a visual oscilloscope, the RAS feature (which is really good for DIY CNC machines), and encoder resolution selection. A DMM, or especially a Delta, will give you a lot more IO to the motors, and a lot more stuff to play with. E.g. direct access to the encoder position (even if the motor is not active), many more error states, warnings, etc. and some more condition specific tuning. Last bit on clearpaths. I've been talking about the SDSK series motors. those are controlled from an external controller through pulses like stepper motors. They have other series of the same motors that interface differently. Specifically, they have some motors designed to interface with microcontrollers and have a really nice set of C libraries for doing all the basic motor control stuff. If you are building things like conveyor belt automations or material handling stuff, the clearpaths are very much an "easy button" compared to nearly every other kind of motor on the market IMO.

iancmceachern 4y ago

I second teknik motors, also check automation direct,misumi, or even ebay/Ali express