How to shop for more unique servos? Where?

If you have a list of specs, where and how do you find a servo motor? Specifically, I’m looking for a servo with less than 180 degree rotation. I know code will allow me to choose whatever angle I need at the time, but a servo built for less range would be an advantage for my project. Nevertheless, I’m more interested in learning how to shop for servos than in finding a great suggestion for this project. thanks.

Pololu:

ocuser:
If you have a list of specs, where and how do you find a servo motor? Specifically, I'm looking for a servo with less than 180 degree rotation. I know code will allow me to choose whatever angle I need at the time, but a servo built for less range would be an advantage for my project. Nevertheless, I'm more interested in learning how to shop for servos than in finding a great suggestion for this project. thanks.

There are thousands of possibilities.

Physical size is one aspect.

Voltage range these days(not so common) as most standard servos will operate in the range of around(min) 4.8v to 6.0v (max)

Power is another, usually expressed as "so many" kg-cm.
Standard servo is normally around 2.5kg-cm @ 6.0V...this will be less with 4.8V naturally.

Some have plastic gears while for a little extra one can get more durable metal gears.

You will not find any with less than standard 120 degrees throw , some are 180 degrees.
Speed to travel 60 degrees is normally quoted also.

Then there are specialised servos like the sail winch servos and continuous rotation servos.

Digital (expensive usually special application) or analogue ( run of the mill servo for say $7.00)

Plenty of info out there if you Google it.

larryd:
Pololu:

I've wasted multiple days now searching for the servo specs I want on the websites I could find and so I suspect others have too. So, I'm hoping there must surely be a vendor, a database, or a catalog that provides a categorized listing of servo motors, their specs, and the ability to search for specific details.

BTW, I appreciate that you took time to reply. But I think your query link proves my point in that at 10 listings per page, it returns 15 pages. As I read through the text summaries on the query results, I'm not finding many specifics, and there's not enough time left in this day to drill down on each listing.

bluejets:
Plenty of info out there if you Google it.

Yes, thanks. I've spent days googleing. How do you find something specific? Is there a vendor website with product listings that you particularly like?

"How do you find something specific?"

So what specifics are you seeking? Maybe post up a list and suggestions can be made. If you don't really know what you are looking for, chances of finding are slim. Most of the large hobby servo vendors like hobbyking list the servo specifications for the servos they sell.

How many more servos are you looking for? Many vendors would offer bulk supplies of one specific type.

The Hobby King website has a huge range of servos and it has a sorting system (which is far from perfect, but may help)

...R

Robin2:
The Hobby King website has a huge range of servos and it has a sorting system (which is far from perfect, but may help)

...R

Just in case the Op can't find it...seems to have trouble searching..... :o

https://www.banggood.com/search/servos.html?from=nav

https://www.amazon.com/s?k=servos&ref=nb_sb_noss_1

Hi,
What are the specs you are searching for?

What is the application?

Can you use a stepper motor and position feedback?

Thanks… Tom… :slight_smile:

servodatabase.com

go to the manufacturers web site, not the retailers. find the .PDF

zoomkat:
So what specifics are you seeking?

In my original message I mentioned an angle range that is less than 180 degrees. How would you find a servo like that? Where would you start?

AJLElectronics:
How many more servos are you looking for? Many vendors would offer bulk supplies of one specific type.

I'm looking for 1. ... maybe 5. ...not enough to excite any vendor. Nevertheless, if I wanted 1 million, how would you find a vendor that has a product with specific specs? All the product listings that googleing revealed don't even include a column for angle range.

bluejets:
Op can't find it...seems to have trouble searching..... :o

You sent three links, all of which only included the word "servos". You seem to have trouble reading my original message that mentioned "reduced angle" of less that 180 degrees. How do you search for a specific feature like that?

zoomkat:
So what specifics are you seeking?

Specifically, the original message of this thread requested help finding a servo with an an angle range of less than 180 degrees. Something in the neighborhood of 120 to 150 degrees would be useful. Nevertheless, I'm mostly interested in learning how you would find such a product.

ocuser:
You sent three links, all of which only included the word "servos". You seem to have trouble reading my original message that mentioned "reduced angle" of less that 180 degrees.

I guess we all thought that you might exercise some effort yourself. :slight_smile:

I suspect that few if any of the servos on the market specify their max angle precisely. Most of them are nominally 180° but when you get them home you find that they may be a bit different. They are not sold as precision industrial components.

...R

TomGeorge:
Hi,
What are the specs you are searching for?

What is the application?

Can you use a stepper motor and position feedback?

Thanks.. Tom... :slight_smile:

Tom, thanks. In this application, we need to lift an arm through a range of about 120 degrees. The load on an eight inch arm is about 1 lbs, which can be interpreted as 10 to 20 Kg/cm torque. The challenge has been searching for a throw range. The throw range spec seems to be out of reach of searches and spec tables.

"Nevertheless, I'm mostly interested in learning how you would find such a product."

Using search engines would be your best bet. Get the information from the vendor or the manufacturer who should have some information. I think most hobby RC servos are rated for something like 90 deg. of rotation, and the ~180 deg. is just a bonus feature. I've never seen hobby servos with a specified operating range of "120 to 150 degrees ", so you may spend the rest of your life chasing your tail trying to find one. Just saying.

Ah, I think I understand now... You are looking for an unusual spec servo and you don't already have any? Your title suggested that you were looking for more of the unique servos you already have.

The word "unique" is binary, it means "one". Therefore something cannot be more or less unique, because there can only be one. Hence my confusion!

AJLElectronics:
Ah, I think I understand now... You are looking for an unusual spec servo and you don't already have any?

Yes. Thank you. Here's what I've learned:

When it comes to rotation range, various manufacturers, retailers, and spec sheets refer to that servo spec as
Limit Angle
Throw
Angle Range
Operating Range
Operating Travel

Interestingly, "rotation range" doesn't seem to be used.

Today, I discovered that ServoDatabase.com has an "advanced search" which allows "Op. Range" to be specified.