I've found the gearmotors that I need at Pololu but I cannot find any timing belts and cogs on their site. In order to implement my motor (rotating gun platform) I will need a ratio reduction so I need either gears or timing belts. I assume timing belts will be more forgiving when it comes to mechanical tolerances--I've had trouble keeping gears from binding.
Anyway, where can I find a good selection of timing belts and cogs? It would be best if I could buy an assortment, actually.
How about Boston gear? http://www.bostongear.com/
I can't find any timing belt products on that site.
I don't understand how timing belts can be so popular in industrial robotics and even hobby robotics but it's so hard to find belts and pulleys. Even places like pololu that sell tons of motors, and people like sparkfun, don't sell belts and pulleys. I have robbed some stuff out of inkjet printers but it's not the sizes I need. Am I not using the right search terms?
Take this for example:
I can buy belts on one website, and I can buy cogs on another website, but they are never the size I want and I don't know if they will work together. I don't know if these things are standardized; I don't think they are. Is there no website that sells toothed belts and cogs, in various sizes, that work together?
And search for 'timing belts', 'toothed belts' . I'm sure they might have cogs and gears also.
Lefty
I'm confused. Your link just goes to a forum thread about an arduino-compatible board. Did you mean to link to another website?
My error this is the link:
Lefty
BetterSense:
I can't find any timing belt products on that site.I don't understand how timing belts can be so popular in industrial robotics and even hobby robotics but it's so hard to find belts and pulleys. Even places like pololu that sell tons of motors, and people like sparkfun, don't sell belts and pulleys. I have robbed some stuff out of inkjet printers but it's not the sizes I need. Am I not using the right search terms?
They hide them well - you have to guess that they consider a timing belt a shaft accessory: http://www.bostongear.com/products/shaft/timing.html
Have you looked in your local yellow pages? I'm pretty certain you'll find something in there for the Dallas area. Here in Phoenix I typically use a company called "Bearing, Belt and Chain" - you probably have something similar in your area. You might also try McMaster-Carr (http://www.mcmaster.com/). Another option might by Tractor Supply Co (http://www.tractorsupply.com/). How about Small Parts (http://www.smallparts.com/)...?
For a prototype pick-n-place system I'm playing with I got timing belts (tooth / cog belts) and matching pulleys from here:
You can probably find them a bit cheaper other places, but they have an actually usable site search (good for resolving a large dependency chain of parts that must mate), and a large selection of matching belts and pulleys. I used the "40DP" (0.0816 pitch) variety as it seems to be pretty popular.
Not knowing how big/small your mount is, you might check servocity below for parts.
For just about anything you can imagine McMaster-Carr has it. A fun and easy place to shop with filters to allow you to pinpoint what you are looking for. Service is great. Careful - you can get lost and find yourself spending too much time just browsing.