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Technical Specifications
Last Updated: 2026-08-12Identity
Performance
Physical
Drivetrain
Control & Signal
Electrical & Environment
Connectivity
Origin
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| Identity | |
| Brand |  |
| Product Number | HD-9150MG |
| Category | Hobby |
| Discontinued | Yes |
| Performance | |
| Torque |
6.0V
222.20 oz-in
16.00 kg-cm
1.6 N-m
4.8V
180.50 oz-in
13.00 kg-cm
1.3 N-m
|
| Speed |
6.0V
0.18 sec/60°
333.3 deg/s
55.6 RPM
4.8V
0.20 sec/60°
300.0 deg/s
50.0 RPM
|
| Running Current | (add) |
| Stall Current | 2.6–3.2 A2600–3200 mA |
| Physical | |
| Weight | 2.15 oz61.0 g |
| Dimensions |
L 1.60 in W 0.79 in H 1.66 in L 40.6 mm W 20.1 mm H 42.2 mm |
| Case Material | (add) |
| Drivetrain | |
| Motor Type | Coreless |
| Motor Drive | (add) |
| Gears | Metal |
| Gear Spline/Teeth | 25 T |
| Shaft Size | (add) |
| Rotation Mode | (add) |
| Rotation/Support | Dual Bearings |
| Backlash | (add) |
| Control & Signal | |
| Modulation | Digital |
| Direction | (add) |
| Rotational Range | (add) |
| Mechanical Limit | (add) |
| Pulse Cycle | (add) |
| Pulse Width | (add) |
| Neutral Position | (add) |
| Dead Band | (add) |
| Refresh Rate | (add) |
| Angle Sensor | (add) |
| Control System | PWM |
| Programmable | (add) |
| Signal Voltage | (add) |
| Electrical & Environment | |
| Operating Voltage | 4.8–6 V |
| Power Source | (add) |
| Regulator Type | (add) |
| Temperature | -10–50 °C14–122 °F |
| Water Rating | (add) |
| Certification | (add) |
| Idle Current | 0.005 A5 mA |
| Connectivity | |
| Connector | JR (Universal) estimate |
| Wire Length | 300 mm11.81 in |
| Origin | |
| Country of Origin | (add) |
Disclaimer: Most data is sourced from the manufacturer. Some data is sourced from our loyal community and with the help of AI. We aim for accuracy but are not responsible for inaccurate information.
Performance Analysis
| Shaft Power | 1.67–2.28 W |
| Torque Density | 2.9590 oz-in/g Stronger than 44% of the 831 Digital Standard servos in the database |
| Torque-to-Volume Ratio | 86.02 oz-in/in³ Denser torque than 37% of the 842 Digital Standard servos in the database |
| Power Density | 1.088 W/in³ More power-dense than 21% of the 1643 Digital Standard servos in the database |
| Speed-to-Weight | 0.08197 (1/sec·g) Faster than 14% of the 820 Digital Standard servos in the database |
| Speed-Torque Trade-off | 36.10 Better balanced than 62% of the 825 Digital Standard servos in the database |
| Current-per-Torque Ratio | 0.0177 A/oz-in More efficient than 41% of the 230 Digital Standard servos in the database |
| Torque Gain per Volt | 19.25%/V More voltage-responsive (torque) than 75% of the 672 Digital Standard servos in the database |
| Speed Gain per Volt | 9.25%/V More voltage-responsive (speed) than 13% of the 686 Digital Standard servos in the database |
| Voltage Range Width | 1.2 V Wider voltage range than 21% of the 1268 Digital Standard servos in the database |
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Reviews (4)
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Dalton
July 11, 2013Application(s): Elevator and Ailerons on a 50cc Yak 54
Comments: Powerful servo with a good response time for a fantastic price. I've had these on the elevators and ailerons of my 50cc Aeroworks Yak flying imac and light 3D for about a year now with ZERO problems. They have performed fantastically- I'm about to buy more for a 50cc Extra.
Conrad
April 16, 2013Application(s): 1/8th Buggy Steering
Comments: Use it with JR 40Mhz transmitter. Servo jittered. Changed the transmitter from PPM to PCM. Jitters gone, centers 100%. No problems and using for 3 years now.
Mike
July 9, 2012Application(s): Pattern 2 mater aileron and rudder
Comments: Excellent choice. I love what you get for the price.
schu
June 15, 2010Application(s): 30cc Gas airplane.
Comments: These servos are pretty strong and center pretty well, but they have one major flaw. They twitch and extend to one side when they are powered on without a signal. The new spektrum RX gear doesn't send a signal to the servo until they find the TX so with plugged into my newer AR6200 they all twitch.
On my older firmware AR6200, they don't twitch because the RX sends a centering signal to the servos until it finds the TX.