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Technical Specifications
Last Updated: 2026-09-14
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | 31425S |
| Category | Hobby |
| Performance | |
| Torque |
6.0V
57.00 oz-in
4.10 kg-cm
0.4 N-m
4.8V
46.00 oz-in
3.31 kg-cm
0.3 N-m
Below Average
|
| Speed |
6.0V
0.16 sec/60°
375.0 deg/s
62.5 RPM
4.8V
0.21 sec/60°
285.7 deg/s
47.6 RPM
Below Average
|
| Running Current |
6.0V
0.180 A
180 mA
4.8V
0.150 A
150 mA
Above Average
|
| Stall Current | 0.6–0.75 A600–750 mATop 10% |
| Physical | |
| Weight | 1.60 oz45.4 gAverage |
| Dimensions |
L 1.59 in W 0.77 in H 1.44 in L 40.4 mm W 19.6 mm H 36.6 mm |
| Case Material | Plastic |
| Drivetrain | |
| Motor Type | 3-pole |
| Gears | Nylon |
| Gear Spline/Teeth | 24 T estimate |
| Shaft Size | 6.0 mm |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Backlash | 0.500° |
| Control & Signal | |
| Modulation | Analog |
| Direction | Clockwise |
| Rotational Range | 80° |
| Mechanical Limit | 188° |
| Pulse Cycle | 20 ms |
| Pulse Width | 900-2100 µs |
| Neutral Position | 1500 µs |
| Dead Band | 5 µs |
| Refresh Rate | 50 Hz |
| Angle Sensor | Potentiometer |
| Control System | PWM |
| Programmable | No |
| Signal Voltage | 3-5V |
| Electrical & Environment | |
| Operating Voltage | 4.8–6 V |
| Power Source | Direct |
| Regulator Type | Direct |
| Temperature | -20–60 °C-4–140 °F |
| Idle Current | 0.009 A9 mA |
| Connectivity | |
| Connector | JR (Universal) |
| Wire Length | 300 mm11.81 in |
| Origin | |
| Country of Origin | Philippines |
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.
Class Comparison
| Torque | Below Average Stronger than 26% of 157 Analog Standard servos at 4.8V |
| Speed | Below Average Faster than 22% of 156 Analog Standard servos at 4.8V |
| Weight | Average Lighter than 59% of 430 Analog Standard servos |
| Running Current | Above Average Lower draw than 84% of 92 Standard servos at 4.8V |
| Stall Current | Top 10% Lower draw than 96% of 46 Analog Standard servos |
Performance Analysis
| Shaft Power | 0.41–0.66 W |
| Power Density | 0.374 W/in³ More power-dense than 26% of 421 Analog Standard servos |
| Torque Density | 1.0132 oz-in/g Stronger than 14% of 157 Analog Standard servos |
| Torque-to-Volume Ratio | 26.09 oz-in/in³ Denser torque than 29% of 157 Analog Standard servos |
| Speed-to-Weight | 0.10489 (1/sec·g) Faster than 37% of 156 Analog Standard servos |
| Speed-Torque Trade-off | 9.66 Better balanced than 32% of 156 Analog Standard servos |
| Current-per-Torque Ratio | 0.0163 A/oz-in More efficient than 67% of 43 Analog Standard servos |
| Idle-to-Running Current Ratio | 0.060 Lower idle draw than 39% of 34 Standard servos |
| No-Load vs Stall Current Spread | 5.00 Narrower current spread than 73% of 56 Standard servos |
| Torque Gain per Volt | 19.93%/V More voltage-responsive (torque) than 73% of 121 Analog Standard servos |
| Speed Gain per Volt | 26.05%/V 5th-highest speed gain per volt of 122 Analog Standard servos |
| Voltage Range Width | 1.2 V Wider voltage range than 61% of 186 Analog Standard servos |
| Backlash-to-Range Ratio | 0.00625 Tighter backlash than 12% of 27 Hobby servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0042 Finer dead band than 42% of 37 Analog Standard servos |
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Reviews (2)
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matt175
February 19, 2014Application(s): used for throttle servo in my 26cc 1/4 cracker box boat.
Comments: the servo work good enough for the throttle. Brand new out of the shipping box i noticed it has about 1mm of play in the gears before it was ever used. I will see how it performs over the summer and post back if it gets any worst.
hobbyaire
December 1, 2010Application(s): .40 size trainer airplane
Comments: Pros: Extremely reliable and durable, inexpensive
Cons: a bit slower than the comparable Futaba S3004