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CAD $6.40
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9g Continuous Rotation Micro Servo

Product Code : RB-Fit-02


Continuous rotation micro analog servo
Operating Voltage: 4.8-6Volts
Plastic gears
Speed: 0.12sec/60degree

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About this product


Continuous rotation micro analog servo
Operating Voltage: 4.8-6Volts
Plastic gears
Speed: 0.12sec/60degree

The 9g Continuous Rotation Micro Servo is the least expensive continuous rotation servo on the market and includes three types of servo horns. Use it to make a mini 2WD robot without the need for a motor controller!

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• Torque: 1.3kg.cm/18.9oz.in Back to top


• Wire length: 20cm
• Size: 23.2 X 12.5 X 22.0 mm
• Weight: 9g (0.32oz) Back to top

Supplier Product Code

FS90R Back to top

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Customer Reviews

New version is not as good.

Review by Eli

I bought a bunch of these servos about one year ago and they were great. Speed control needed some minor calibration, but that was expected. Hardware calibration was done with a flathead trimpot flush with the rear of the casing.

However, I recently ordered these same servos. Now, the trimpot has been moved far inside the servo housing, and is a phillips head. A small philips had to be inserted through a small hole in the casing to access the trimpot, which was mounted at an awkward angle within the motor. It was much more difficult to calibrate, and thus use, these servos.

Otherwise, the servos have good speed and torque, capable of driving a small robot. Wires are slightly weak and prone to breakage if appropriate strain-relief measures are not taken.

(Posted on 7/15/15)

When 90 degrees isn't enough...

Review by Rick Winscot

I've modified a lot of servos for continuous rotation over the years... they make great motors for little robots. However, the process is time consuming and when you make a mistake, it's like blowing your nose in a five-dollar bill. Being able to buy them as continuous rotation servos is awesome - having a trim is even more awesome-er. Keep in mind that this servo is constructed with nylon gears, an abrupt stall may destroy the servo.

(Posted on 6/17/15)

Good Product

Review by Ann

Great little servo for the price but 9 days for delivery!

(Posted on 5/27/15)

Nice Servos

Review by Hamilton

Used these for a robotics and Arduino class with 5th through 8th graders. Didn't really have the time or financial leeway to go the motor controller route. All went well. I'm glad these exist, I'm glad I got em' and I will do it again.

(Posted on 8/21/14)

Wish we'd known about this several months ago!

Review by Carol

We ordered some servos that we intended to hack for continuous rotation, and when the time came, they were not hackable :-( Seems like that happens a lot. You don't want that to happen at the last minute. These worked great. Thanks!

(Posted on 7/14/14)

Great small servos at a good price

Review by Joseph

I purchased these servos to build an inexpensive robot. They work well. I used wooden wheels from a craft store and used double sided carpet tape to connect the wheels to the servo wheel.

(Posted on 6/3/14)