Hextronik HXT900 - 9g Micro Servo


Modulation: Analog
Torque: 4.8V: 22.20 oz-in (1.60 kg-cm)
Speed: 4.8V: 0.12 sec/60°
Weight: 0.32 oz (9.1 g)
Dimensions: Length:0.83 in (21.0 mm)
Width:0.47 in (12.0 mm)
Height:0.87 in (22.0 mm)
Motor Type: Coreless
Gear Type: Plastic
Rotation/Support: Bushing
Rotational Range: 60°
Pulse Cycle: 20 ms
Pulse Width: 450-2450 µs
Connector Type: JR
Hextronik HXT900
Brand: Hextronik
Product Number: (add)
Typical Price: 3.65 USD
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Reviews of Hextronik HXT900 (18)

  • Rating:

    Application(s): Years ago, I was given a Eflite Mini Twist. I don’t fly electric, so I installed an O.S. FP25. At the time,I wasn’t really to involved with small models, so I just installed whatever servos I had lying around. This airplane is one of the wildest flying planes I own. I know I am putting a lot of stress on the servos. I couldn’t remember what servos I installed, turned out to be HXT900. Never a problem. I am buying more to replace the POS Hitec 55’s that keep crapping out on me.

    Comments: Seem to be good servos. Even though I am sure I am abusing them. Can’t beat the price.

  • Rating:

    Application(s): RC planes all control surfaces.

    Comments: This product has served me very well but I've only given it a 4 rating because I do have a problem with them. T travel or rotation goes about 25 Degrees in one direction and 45 in the other. Is there a way to equalize them without sofisticated equipment?

  • Rating:

    Application(s): Star max 64mm ducted fan f-18. Aileron control

    Comments: Well my servo failed and I crashed my f-18. I need a replacement servo... The tricky part is there are to on the star max for aileron control... But one is reversed. So where can I buy reversed
    Hextronik hxt900 servos? Help anyone?

  • Rating:

    Application(s): Animatronic eyelids for costume head

    Comments: Generally very good servos for the money. Had two failures. I haven't investigated one yet but the other failed after two days very hard use. My application uses them to move eyelids on a costume, so almost continuous movement and chatter. Traced the failure to burnt-out brushes. The brushes are trifurcated leaf springs and under heavy usage they start to melt. Eventually one melted right through leaving a sharp edge which jammed the commutator. The H-bridge driver transistors then burned out. I don't need full torque so I've been adding external resistors in series with the motor to reduce the current. Might see if I can put deadband in the software to reduce the demand as well.

  • Rating:

    Application(s): airplane servos all surfaces

    Comments: They worked fine at first, but after a couple of years i began to have these die out for no reason.

    In total im having a failure rate over 30%.
    Some planes saw all 4 of them die over time.. others had 3 out of 6 die out..

    Most died just after powering day one random day .. with nothing diferent.. just powered up the plane and the servo stops working and overheats.. and in 3 separated ocasions they failed in flight (both were aileron servos).. two of them died in neutral and the other in aileron-up position (managed to save the plane)..
    Im quite dissapointed ..i was very delighted with these cheap and nice working servos ..until they began mass failing on me.. so i cant risk them anymore and began phasing them out and replacing them in critical controls (elevators mainly)

  • Rating:

    Application(s): Elevons for skyfun

    Comments: One of the servo arms broke on the first flight around the ring that screws into the servo and crashed my airplane.

  • Rating:

    Application(s): Aileron on 53" 3D Plane

    Comments: It's said Coreless motor. I think It's not. But I'm still happy with it.
    Good quality servo with low price

  • Rating:

    Application(s): Throttle, Ailerons, Elevator, Rudder for all 4 of my 44" W/S scratchbuilt 25 size Combat Planes ( total weight 1.8kg - Dry )

    Comments: Fantastic servo best value around ..performance is great for a $3.00 servo, never had one fail in flight and they get a tough workout flying Combat...have only had 1 fail for no apparent reason ...out of a total of 22 in use...apart from those damaged in model crashes...no problem just chuck in the bin and replace with a new ones.

  • Rating:

    Application(s): 3d foamies, 450 cyclic

    Comments: These servos are amazing for the money! They are blazing fast, and have plenty of torque for my applications... However, one of them has a centering problem... thus my 4 star rating... But if it didn't have centering issues, it would be a perfect servo!

    -Happy flying!

  • Rating:

    Application(s): Foamy sport planes

    Comments: Actual weight is 10.6 grams or so. Lots of torque, plenty of speed, fully reliable. I don't know what is happening with these guys who claim these servos croak all the time; they are used all over the world in scratch-built foamy fliers under all kinds of conditions. I use them in everything from 250-500 grams, and in 400-450 helis as well. I've passed dozens of them on to people who have put them into everything you can think of. They work and work well. And for $3 or so you don't even need to think of rebuilding them; just replace 'em.

  • Rating:

    Application(s): small planes/wings

    Comments: You get what you pay for. Has some of them in use but after 2 died with dead electronics some died with a dead gears i just dropped them. But as long as they last they are a nice bang for the buck.

  • Rating:

    Application(s): Robotics

    Comments: I tested the torque of this servo and reach 0,8Kg/cm and the speed seems not to be right too.

  • Rating:

    Application(s): Trex 450 clone (HK 450) (all channels)

    Comments: The price is unbeatable compared to A-brand servos. I've been using them extensively in a 450 size heli even for the tail ( with a 401 class gyro supporting analog servos). They have been absolutely rock solid so far.

  • Rating:

    Application(s): Rudder & Elevator on small electic powered slow flying planes.

    Comments: Over the past four years I have been using 6 of these servos and have had 5 of them fail. They suddenly stop working, the motor in them develops "dead spots" on the brushes and commutator. If they put a better quality motor in them they would be an awesome servo. They have been used in a very undemanding application on planes mostly gliders that are slow flying. None have been crashed or abused, they just stop working. Very dissapointed in these servos.

  • Rating:

    Application(s): As cyclic and tail servos in T-rex 450 clones.

    Comments: Excellent servo for the money! They are stong, fast, and cheap. One of things I like the most is that you can buy replacement gear sets so you can repair these servos.

  • Rating:

    Application(s): Foamie servos all around

    Comments: I've used a lot of these and have never had one fail. What more can you say? They're dirt cheap and work well.

  • Rating:

    Application(s): All my cheap foamies, and some really nice small electric RC models too!

    Comments: At first I was sceptical, but my confidence grew the more I used them. Loads of them being used at our club with very few failures. One failed in my Trex 450 :-( Hard to beat them for value for money.

  • Rating:

    Application(s): 5-10 Oz. sport planes

    Comments: I have at least 30 of these in my planes and have purchased several hundred that I have sold to flying buddies. Never a reported failure. Good centering and durable. Just great servos for sport flying.

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