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HobbyKing™ 939MG Servo MG 2.5kg / 0.14sec / 12.5g

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HobbyKing™ 939MG Servo MG 2.5kg / 0.14sec / 12.5g

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$5.66
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HK939MG
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HobbyKing 939MG Metal Gear Servo 2.5kg/ 0.14sec / 12.5g
A strong performer with a very smooth movement and good centering.
Excellent for parkflyers or planes up to .40 size (3,500mAh electric).

 

 

Specs:
Model: HK939MG
Size: 22.5X11.5X24.6mm(0.88"x0.45"x0.96")
Weight: 12.5g
Operating Voltage: 4.8V / 6.0V
Operating Current: 200mA / 240mA
Operateing speed : 0.14sec.60° / 0.13sec.60° 
Stall torque : 2.5kg.cm / 2.7kg.cm
Dead band : ≤5uSec
Operateing speed: 40º/one side pulse traveling 400us
Potentiometer: 2 slider/Direct Drive
Ball bearing: MR85
Gear: Metal
Type: Analog
Motor: Coreless
Connector wire length: 215mm
Operating Temperature Range: -20 °C to +60°C
Spline count: 21

  • Servo Torque(kg)(min. 0.01kg) 2.50
  • Servo Speed (Sec/60deg) 0.14
  • Servo A(mm) 31.00
  • Servo B(mm) 23.00
  • Servo C(mm) 29.00
  • Servo D(mm) 12.00
  • Servo E(mm) 32.00
  • Servo F(mm) 21.00
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LeeR | Verified Buyer

  • Quality
  • Overall
  • Value

HK939MG Not reliable

Feb 18, 2021

I installed two HK939MG servos in a new trainer - rudder & elevator. On checking the setup and function, the arm on the elevator servo jumped position. I replaced the defective HK939MG sevo with another from the same order. However that servo arm also jumped position during my second flight. Scary as the plane suddenly started to climb for no reason, despite being properly trimmed by my instructor. Made for an intersting landing. I've replaced these HK939MG with 12g Emax servos.
I'm going to send these poor servos back to HK and get a refund.

I never receved this purchase | Verified Buyer

  • Quality
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I never receved this purchase

Dec 30, 2020

I never receved this purchase
Contact with customer service catastrophic

Neri | Verified Buyer

  • Quality
  • Overall
  • Value

value

Nov 17, 2020

Idéntico al Corona 939. Funcionamiento perfecto.

939 MG serv'os. | Verified Buyer

  • Quality
  • Overall
  • Value

Used these for a while on smaller planes (up to 40 size) & they perform very well

Oct 06, 2020

Happy with this product the only downside is they are out of stock for long periods of time! otherwise pretty happy.

Helmut | Verified Buyer

  • Quality
  • Overall
  • Value

sehr gut - preisgünstig

Aug 11, 2020

hochwetiges MG Servo, gute Stellgenauigkeit, Ruderhebelantrieb etwas klein aber ausreichend, geringfügig schwerer als angegeben aber sehr empfehlenswert

Ruben | Verified Buyer

  • Quality
  • Overall
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Bom Produto

Aug 05, 2020

Bom produto. Estou muito satisfeito com o preço e a qualidade.

. | Verified Buyer

  • Quality
  • Overall
  • Value

.

Jul 31, 2020

.

Josef | Verified Buyer

  • Quality
  • Overall
  • Value

hochwertiges Servo

Jul 14, 2020

Gewicht: 14,92g (ohne Schrauben und Ruderhörner, mit 22cm Kabel inkl. Stecker)
günstig bei guter Qualität
Einbau: 12x23mm Servoöffnung
Tiefe vom Flansch: 19,5mm
Spiel: bei Neuem praktisch nicht vorhanden
Kabelausgang: horizontal - kein Tiefenbedarf
Servohornfixierschraube ungewöhliche Größe - NICHT verlieren

Bordas | Verified Buyer

  • Quality
  • Overall
  • Value

Bonjour

Jul 05, 2020

good

Servo"s/other bits | Verified Buyer

  • Quality
  • Overall
  • Value

Good quality product

Jun 25, 2020

Good quality product(from prior use of this product) but mostly out of stock! It is annoying when it says it's in stock & when you get to checkout it says its out of stock because of low stock numbers makes ordering these and other items, a bit of a turn off.Maybe numbers of instock levels of items could be included in window?
Service & delivery very good.

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