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> Servos & Parts > Micro Servo 5-10g


HXT900 9g / 1.6kg / .12sec Micro Servo

HXT900 9g / 1.6kg / .12sec Micro Servo
HXT900 9g / 1.6kg / .12sec Micro Servo

HXT900, one of the most famous and the best value micro servos available.
Used by tens of thousands of hobbyiests world wide. The HXT900 is the #1 trusted low cost 9g servo.

• Plastic Bushing
• 25cm wire
• Coreless motor
• Servo arms & screw included

Size : 21x12x22 mm / 0.74x0.42x0.78 in
Voltage : 3v ~ 6v
Weight: 9g / 0.39oz
Speed : 0.12 sec/60(4.8V)
Torque : 1.6kg-cm
Working Temp : -30C~60C
Gears: Nylon White type

Note: Due to customer demand we have changed back to the original white gear HXT900.

These servos can be found on eBay and other asian sellers at close to this price, however be warned, they do not contain Taiwan/Japan components. HexTronik (the manufacturers of these servos) have two standards, one is for local sale, and the other is export quality with imported connectors and resin gears from Taiwan and Japan.
Our HXT500 and HXT900 are export only, and not built for the domestic market. You will not find the same quality servo for less, anywhere!


This product available from a warehouse near you!

Weight (g) 9
Torque (kg) 1.6
Speed(Sec/60deg) 0.12
A(mm) 29
B(mm) 23
C(mm) 26
D(mm) 12
E(mm) 32
F(mm) 16
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Customer Data

Weight: 19g
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Price  $2.69

  • HXT900 (POM) Replacement Servo Gear Set

    Combo Price: $0.75   BACKORDER

Further discounts available for registered & logged-in customers.
 Customer rated
Total of 635 discussions.
RonRC  4118 points - 5/23/2015
Great servos. Check out how well they operate a scratch built gimbal by going to YouTube and searching for "KK2, Scratch Built Gimbal, and Cheap Servos".
Graziano  5 points - 5/17/2015
GREAT SERVO for the price you pay!!! Mounted 4 of these on a epo 1200mm katana mini and had great fun! very fast response and reliable. had them already since a few years and still work great. suggestion is to use them with a bec on ec aircrafts Great also for medium size foamies.!!!
Rcflyyer1  131 points - 5/16/2015
Will these servos work in a very small (.10) glow powered aircraft with a 6.6V Life Battery pack? I know the servos are rated only to 6V but will they burn out if used at .6-.8V more?
 skyfox60 1200 points
I never would these cheap servos on a nitro engine powered aircraft with far to high voltage in addition to that. Thats simply stupid. You should use the small corona servos instead, the HV ones that are not very eypensive either and have a far better 2-slider potentiometer that gives more resistance to vibrations coming up from engine. And they work with 2S Life as receiver battery perfectly. To find these servos search for product ID DS929MG-HV . Hope that helps.
 handyjap 660 points
My HXT900 servos start to jitter severely when I increase the voltage just above 6V.
Wambly  22 points - 5/10/2015
What size has the electronic pcb? Are there 3 wires to the Pot and 2 to the motor, or is anything direct soldered? I need it for a smoked servo. thank's
 skyfox60 1200 points
Grü*ß* Gott, Ddie Platine misst 9,5mm x 13mm. Habs grad mal geö*ffnet und nachgemessen. Eigentlich sind es in der Lä*nge 12,5mm, aber ein Kabel wird so abgefü*hrt, das es dann 13mm sind. Es gibt die beien Kabel zum Motor und drei zum Poti, wie von Dir vermutet. Platine und Kabel belegen dabei eine Hö*he von ca. 4 - 5mm. Die Platine ist in diesem Servo nicht befestigt, sondern scrä*g eingelegt, sonst wä*r das Servo zu klein. Ich hoffe, damit kannst Du fü*r dein Vorhaben was anfangen. engl.: The PCB measures 13mm by 9mm, 2 cables for the motor and 3 ones for the pot. Required height is around 4 to 5 mm. PCB is actually 12,5mm but needs 13mm space due to kind of cabeling. Hope that helps.
 Wambly 22 points
Thanks, I think it fit in the Servo of the B118 (1:18 Stadium Truck) Steering Servo. The PCB has the same size. *DE: Danke, sollte in den Lenkservo vom 1:18 Stadium Truck passen. Ist mir bei meinem letzten Spaziergang nach ca. 3km abgerauch. Hat nach links gelenkt. Wurde nach hause getragen.
KRISTINA  2 points - 5/5/2015
Best servos out there for the price.
 Napstr 1220 points
definitely are
 skyfox60 1200 points
For the price.... yes, but you can buy much better ones for a few cents more. I prefer the corona ones that are far better in my opinion.
 MishoIV 155 points
*skyfox60 Which corona servo? Post here product ID, please.
 skyfox60 1200 points
I have made good experience with the following servos: HKSCM9-6 , HK15178 , DS-928BB , 9378000002 All of them are far more precise in centering and reliable servos. I exchanged all my HXT-900 to the ones listed above. Some are cheaper, some are 3 or 4 bucks more, but really woth the few bucks more, cause the give much better handlicg of aircraft due to far more precise operation.
 MishoIV 155 points
Thanks for answer.
 skyfox60 1200 points
You´*r welcome.
 Napstr 1220 points
Not the best comparison Skyfox - you are comparing digital servos to analogue and you would sure hope the digitals were better but for the average flyer you wouldn't notice the difference and these are what they say strong reliable and fast
 skyfox60 1200 points
The HXT-900 is neither fast nor reliable. The analog HK15178 is much faster, has the better gear and not only that, it is cheaper, too. The TSS-10HM is 1 buck more compared to the haxt and therefore digital and has metal gear as well. I use that in a very fast small plane and it has excellent centering and a precise operation. The HXT is technology from yesterdays. No reason to use it nowadays with permanently growing needs. I used it around 2 years ago in a small but very fast plane and the centering as well as the synchronous runnig had been bad, so the airplane was hard to control. By changing to the TSS-10 a very different feeling came on and the airplane is still in use and its fun to fly. So do not try to tell me, the HXT is a good servo. Its a servo, that´*s all.
Customer Reviews
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Overall Rating
456 thumbs up!
One of the best and MOST HOT selling servos... These come into stock and within 3 days are again out of stock... HOT SELLING Item. The performance of this servo is extremly good and fast. Very accurate and there are no centering issues. The gears are resin/plastic and for the money totally worth it.
I have been using these on my foamies for a long time now. A bit noisy but torque is good. Highly recommended. Buy them before they go OUT OF STOCK AGAIN.

20 comments. Reply..

Overall Rating
Anders Höglund
129 thumbs up!
These gems are fast and strong, a bit noisy perhaps.

There is a downside of beeing strong and fast, they draw quite a bit of current.
I measured about 550mA when exercising one HXT900 without load. This is an average, it seems to require more peak current. If used together with a linear BEC it will cause voltage drops.

I tried 2 HXT900 with a 1.5A BEC and a Spektrum AR6200 Rx. I could not exercise those two without loosing power to the Rx and cause it to a "BrownOut Reboot".
With four servos connected, I could not even touch the control stick. The BEC circuit also got so hot it melted its plastic sleeve. Still works though, did not fail completely.

I tried with a larger ESC, having a 2A linear BEC, and it worked much better. But I could still force a "brownout reboot" by wildly excerise all four servos. I dare not fly my Pitts this way.

So, with four servos or more and an AR6200 Rx, I think you must use a larger switch mode BEC capable of 3A at least.

This is a combined problem of high current surge, poor power supply and voltage sensitive Rx. And maybe poor filtering of the powerline.
Not really a problem with the servos as such.

27 comments. Reply..

Overall Rating
Anthony Manti
84 thumbs up!
Alot of flyers in the area are just loveing these. Similar, and in some aspects superior performance to the famous HS-81 at one quarter the price.

Here's some stats from the forums here at Hobby City:

Results in degrees/sec.:

@4.8V 450
@6.0V 560
Results in sec/60degrees.:

@4.8V 0.13


Torque Centering
1.3 .2

3 comments. Reply..

Overall Rating
Quinton Marais
77 thumbs up!
These HC babies kick Hitec HS-65HB's into the weeds starting with a massive 6:1 price ratio saving and ~identical physical size26.8hx23.2Lx12w mm at 9g. They use their own horn spine type however and good quality copper servo wire, and make a similar noise. My tests show very slightly higher power drain than a HiTec HS-65HB
@4.8v smooth flying/hard reversals/stalls @/speed
HXT900 160ma/290ma/690ma/0.14-60° (side-by-side with Hitec)
HS-65HB 135ma/260ma/545ma/0.14-60°
I have bought more than 30 of these and never did one give a problem with normal park flying/crashes and they work fine at 6v but be aware the current will rise to 190ma/370ma/690ma for your BEC. This servo allows you to own and operate 6 models where Hitec would limit you to one model. You decide. My recommendation is get more for less - they are basically the same spec. Sure we all have a few models that we like to run expensive servos on, but these HXT900 are the base to build a big pyramid on, and spend the money you save on buying more airplanes and helicopters. I don't consider them anything like a HS55 which = HXT500. 5 star performance for a 10 star price.

6 comments. Reply..

Overall Rating
62 thumbs up!
These are really nice servo, and you get seven of them included shipping, for the price of one in Portugal.
These servant are fast and very accurate, and the price is fantastic.
Five stars.

8 comments. Reply.. here to see all reviews
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