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Technical Specifications
Last Updated: 2026-07-10Identity
Performance
Physical
Drivetrain
Control & Signal
Electrical & Environment
Connectivity
Origin
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| Identity | |
| Brand |  |
| Product Number | EMX-SV-0289 |
| Category | Hobby |
| Performance | |
| Torque |
4.8V41.60 oz-in3.00 kg-cm0.3 N-m |
| Speed |
4.8V0.05 sec/60°1,200.0 deg/s200.0 RPM |
| Running Current | (add) |
| Stall Current | (add) |
| Physical | |
| Weight | 0.95 oz27.0 g |
| Dimensions |
L 1.38 in W 0.59 in H 1.19 in L 35.0 mm W 14.9 mm H 30.1 mm |
| Case Material | (add) |
| Drivetrain | |
| Motor Type | Coreless |
| Motor Drive | (add) |
| Gears | Metal |
| Gear Spline/Teeth | (add) |
| Shaft Size | (add) |
| Rotation Mode | (add) |
| Rotation/Support | Single Bearing |
| Backlash | (add) |
| Control & Signal | |
| Modulation | Digital |
| Direction | (add) |
| Rotational Range | 60° |
| Mechanical Limit | (add) |
| Pulse Cycle | 3 ms |
| Pulse Width | (add) |
| Neutral Position | 1500 µs |
| 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 | (add) |
| Water Rating | (add) |
| Certification | (add) |
| Idle Current | (add) |
| Connectivity | |
| Connector | JR (Universal) |
| Wire Length | (add) |
| Origin | |
| Country of Origin | China |
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 | 1.54 W |
| Torque Density | 1.5407 oz-in/g Stronger than 16% of the 219 Digital Mini servos in the database |
| Torque-to-Volume Ratio | 43.46 oz-in/in³ Denser torque than 16% of the 224 Digital Mini servos in the database |
| Power Density | 1.607 W/in³ More power-dense than 54% of the 425 Digital Mini servos in the database |
| Speed-to-Weight | 0.74074 (1/sec·g) Faster than 93% of the 220 Digital Mini servos in the database |
| Speed-Torque Trade-off | 2.08 Better balanced than 4% of the 223 Digital Mini servos in the database |
| Voltage Range Width | 1.2 V Wider voltage range than 25% of the 288 Digital Mini servos in the database |
Quick Actions
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Reviews (2)
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VD2021
January 28, 2015Application(s): 450SEV2 450Pro
Comments: I've had nothing but great results with this servo. I now have four that will be installed on a few different 450 size helis. Nice tolerances, no slop, verified the bearings and adequate grease. I also have the EMAX Servo programmer that I use to verify the parameters (haven’t changed anything from stock yet). The price has increased in the past few months and some venders are low or out of stock.
Egg Man
March 26, 2013Application(s): Rudder servo for 450 and 500 helicopter
Comments: Performs well enough but internal wiring and soldering is fragile with little solder and no glue over the solder joints anywhere. When I opened the bottom of the case after a few months before putting it on a beater 500 one of the wires to the motor fell off. (I believe this was just a ground wire, it was thinner than the other two wires, green rather than red and was attached to the motor case. In any case I resoldered it and put liquid electrical tape on all of the solder joints. I wouldn't trust it in a high vibration environment like a helicopter, without glue on the solder joints this servo is a ticking time bomb waiting to crash your aircraft.