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4Pcs SG90 9g Micro Servos for RC Robot Helicopter Airplane Controls Car Boat

4.4 out of 5 stars 1,572 ratings
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Purchase options and add-ons

  • Beffkkip High quality and high cost performance.
  • Operating speed: 0.1second/ 60degree ( 4.8V no load).
  • Operating voltage: 4.8-6V.
  • Small size and light weight.
  • Application: Used for fixed-wing, helicopter, KT, glider, small robot, robotic arm and other models.
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Product Description

sg90 servo
sg90 digital servo
sg90 digital servo

sg90 digital servo

sg90 digital servo

sg90 digital servo

40KG digital servo
25KG digital servo
35KG digital servo
25KG digital servo
MG996R servo
MG995 servo
Buying Options
Customer Reviews
4.4 out of 5 stars 196
4.4 out of 5 stars 196
4.3 out of 5 stars 212
4.3 out of 5 stars 117
4.4 out of 5 stars 222
4.4 out of 5 stars 222
Price $24.99 $32.89 — $36.99 $13.99 $26.99
Running Degree 180°±3° 180°±3° 180°±3° 180°±3° 180°±3° 180°±3°
Maximum torque 40kg/cm(6.8V) 25kg/cm (6.8V) 35kg/cm (7.4V) 25kg/cm (6.8V) 13kg/cm (7.2V) 13kg/cm (7.2V)
Operating Speed 0.14sec/60°( 6.8V ) 0.13sec/60°( 6.8V ) 0.19sec/60°( 7.4V ) 0.13sec/60°( 6.8V ) 0.13sec/60°( 6.8V ) 0.13sec/60°( 6.8V )
Dead band width 3 μsec 3μsec 4μsec 3μsec 4μsec 4μsec
Waterproof ✓ ✓ ✓ ✓ ✓ ✓

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Customer reviews

4.4 out of 5 stars
1,572 global ratings

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Customers say

Customers find these micro servos to be high quality and good value for money. However, the functionality receives mixed feedback, with some customers reporting they work well while others mention receiving non-working units.

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44 customers mention "Value for money"35 positive9 negative

Customers find these servos to be high quality and good value for money.

"These are very good quality. I have used them with a raspberry pi camera to add tilt and pan functionality...." Read more

"project worthy" Read more

"I needed some small servos for a robotics project... these were not expensive, yet very accurate, quiet, and had more than enough power for my needs...." Read more

"These servos are great for the price. i somehow actually was given 8, but I guess i'll take it...." Read more

52 customers mention "Functionality"30 positive22 negative

Customers have mixed experiences with the servos' functionality, with some reporting that they work well and operate correctly, while others mention receiving non-working units and experiencing complete failures.

"...But functionality, it works well and wasn’t much work to get put together!" Read more

"...After a couple minutes in the air the elevator servo stopped working and after I landed it started working again...." Read more

"...so far ther have been no problems at all, and the cables are long as well." Read more

"...Works as expected and now I have a few extra when/if this one fails" Read more

Great servos no rpoblems so far
5 out of 5 stars
Great servos no rpoblems so far
These servos are great for the price. i somehow actually was given 8, but I guess i'll take it. so far ther have been no problems at all, and the cables are long as well.
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Top reviews from the United States

  • mattvw
    5.0 out of 5 stars Great quality and work great!
    Reviewed in the United States on July 26, 2023
    Style: 4PCSVerified Purchase
    These are very good quality. I have used them with a raspberry pi camera to add tilt and pan functionality.

    It was a little bit of work to get the camera to attach to the mount and to get it to stay in place but I’m sure there were better ways than how I did it.

    But functionality, it works well and wasn’t much work to get put together!
    2 people found this helpful
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  • Tom Thompson
    5.0 out of 5 stars Advertised pulse width 1ms(0 deg) to 4ms(180 deg) is not correct.
    Reviewed in the United States on November 10, 2023
    Style: 4PCSVerified Purchase
    At 50Hz a pulse width of 0.5ms corresponds to (0 deg) and a pulse width of 2.5ms corresponds to (180 deg).
    So a 2.5% duty cycle to 12.5% duty cycle is the range.

    The photo depicts 1ms(0 deg) to 4ms(180 deg) as the range which is not correct.

    All 4 worked normally and were able to traverse 0 to 180 degrees.
    They are not high end servos but for the price they work fine.
    4 people found this helpful
    Helpful
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  • Chris Benesch
    4.0 out of 5 stars Works exactly as expected
    Reviewed in the United States on March 26, 2025
    Style: 4PCSVerified Purchase
    If youre using a Pi Pico or Esp32 to drive these with Micropython, I've found best results using a PWM object at 100hz and duty_cycle_16 between 3000 and 16000 gives you close to the whole 180 degrees. Two of these plus an S2 mini runs great on two CR2032 button cell batteries in series.
    Helpful
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  • Napoleon Banzuela
    5.0 out of 5 stars it does the job
    Reviewed in the United States on August 8, 2024
    Style: 4PCSVerified Purchase
    project worthy
    Helpful
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  • Jerry Rutherford
    5.0 out of 5 stars Very nice little servos.
    Reviewed in the United States on February 25, 2024
    Style: 4PCSVerified Purchase
    I needed some small servos for a robotics project... these were not expensive, yet very accurate, quiet, and had more than enough power for my needs. Great product.
    Helpful
     Report
  • danish
    5.0 out of 5 stars Great servos no rpoblems so far
    Reviewed in the United States on August 9, 2023
    Style: 4PCSVerified Purchase
    These servos are great for the price. i somehow actually was given 8, but I guess i'll take it. so far ther have been no problems at all, and the cables are long as well.
    Customer image
    danish
    5.0 out of 5 stars
    Great servos no rpoblems so far

    Reviewed in the United States on August 9, 2023
    These servos are great for the price. i somehow actually was given 8, but I guess i'll take it. so far ther have been no problems at all, and the cables are long as well.
    Images in this review
    Customer image
    2 people found this helpful
    Helpful
     Report
  • Tony B
    5.0 out of 5 stars Works in deerc boat
    Reviewed in the United States on August 7, 2023
    Style: 4PCSVerified Purchase
    Purchased to use in a deerc RC boat. The plug included didn’t match but the leads where nice and long so I was able to solder the old plug onto this servo.

    Works as expected and now I have a few extra when/if this one fails
    One person found this helpful
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  • John
    1.0 out of 5 stars Two failed out of ten (update: three failed)
    Reviewed in the United States on October 3, 2022
    Style: 10PCSVerified Purchase
    They were very inexpensive and they mostly work. The downside is that one was dead out of the box, no movement whatsoever, and another one fails intermittently. My plane flipped over and dived into the ground twice before I noticed that one of these servos was occasionally failing to move. I think the gears were binding, because I couldn’t even move it by hand.

    The short version is that I wouldn’t recommend these in anything that flies, but they’re very inexpensive so I would totally use them in small robotics experiments or something. Just figure that a couple of them are probably going to be bad.

    Update: A third one failed today. This one was in my elevator so I was able to bring it back in. As soon as it landed it started working again. I then flew again and the same thing happened. After a couple minutes in the air the elevator servo stopped working and after I landed it started working again. I’m pretty sure the gears are binding and a little jolt from landing frees it up.
    3 people found this helpful
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