Hi people,
I am wondering if anybody has a good suggestion for a particularly quiet(and preferably fast) servo motor? I have bought a few, and they all seem relatively loud, but I feel like surely there must be some made for certain applications which require a quieter device....?
Any help/suggestions would be appreciated.
tofucactuar:
I am wondering if anybody has a good suggestion for a particularly quiet(and preferably fast) servo motor? I have bought a few, and they all seem relatively loud, but I feel like surely there must be some made for certain applications which require a quieter device....?
There are two main factors that will determine how quiet a servo will be:
Most cheap servos are constructed with plastic spur gears and plastic bearings. They won't have tight tolerances. More expensive servos will use a metal output gear, a bronze bushing on the output shaft, and tighter tolerances. They still can be pretty loud. Spend a bit more (or a lot more), and you can get metal gears and ball bearings throughout.
Finally - if you really want less noise - look for a servo that uses helical cut gears; I am not even sure they make such a servo, honestly, but if they do, it will likely be the most quiet servo you can find (provided you are willing to spend the money). You can find quiet DC motors that use spur gears (such as Pittman gear motors) - but then again, they aren't cheap either, so if you are looking for a similar quality servo, expect to shell out the cash.
I think we should start a heated argument over whether the spur-cut gears or the brushed motor is the cause of more noise in the servo.
Here's an example of a brushless servo with helical gears. Pretty inexpensive, huh?
WOW did not realize things could get that pricey....hmmm, I feel like my budget is a maximum of around 50.... Thats a bit brutal, I will have to do some searching around...Anybody have any suggestions from experience? Thanks for the info thus far!
well most of the servo i have seen and tried so far all are rather loud as well,... i can tell you that the mg995 tower pro is loud!
You might look for motors used in cars that are quiet and adapt to be servos.
i tried putting pressure on my servo once,i moved a 3.5 kg object.. the noise reduced significantly.... maybe adding abit of weight might help.
I can't really seem to find a quite servo... Mostly because I buy the cheaper ones ( Not anymore.... )
I tried making a servo quite by filling up the gear cavity up with Vaseline. It helps allot but it does turn a but harder and slower... So for projects where speed isn't all that important, this could help allot.
Well, servo motors are going to have some kind of reduction, likely spur gears cause it is the cheapest solution, and by nature spur gears noisy. You could make your own servo by supplementing these features. If you get a motor with encoder feed you can create your own closed loop feedback control and you could do your own reduction. A belt drive could be relatively cheap and very quiet, and you could set it up to go at your desired speed.