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Technical Specifications
Last Updated: 2026-09-13| Identity | |
| Brand |  |
| Product Number | 37954S |
| Category | Hobby |
| Discontinued | Yes |
| Performance | |
| Torque |
7.4V
403.00 oz-in
29.02 kg-cm
2.8 N-m
6.0V
333.00 oz-in
23.98 kg-cm
2.4 N-m
4.8V
250.00 oz-in
18.00 kg-cm
1.8 N-m
Average
|
| Speed |
7.4V
0.12 sec/60°
500.0 deg/s
83.3 RPM
6.0V
0.15 sec/60°
400.0 deg/s
66.7 RPM
4.8V
0.19 sec/60°
315.8 deg/s
52.6 RPM
Below Average
|
| Running Current |
6.0V
0.300 A
300 mA
4.8V
0.240 A
240 mA
Average
|
| Stall Current | 4.2–3 A4200–3000 mAAverage |
| Physical | |
| Weight | 2.40 oz68.0 gAverage |
| Dimensions |
L 1.575 in W 0.787 in H 1.457 in L 40.0 mm W 20.0 mm H 37.0 mm |
| Case Material | Plastic / Aluminum |
| Drivetrain | |
| Motor Type | Coreless Brushed |
| Motor Drive | MOS |
| Gears | Steel |
| Gear Spline/Teeth | 24 T |
| Shaft Size | 5.8 mm |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Direction | Clockwise |
| Rotational Range | 180° |
| Mechanical Limit | 180° |
| Pulse Width | 1100-1900 µs |
| Neutral Position | 1500 µs |
| Dead Band | 1 µs |
| Angle Sensor | Potentiometer |
| Control System | PWM |
| Programmable | Yes |
| Signal Voltage | 3-5V |
| Electrical & Environment | |
| Operating Voltage | 4.8–7.4 V |
| Power Source | 2S Li-Po |
| Regulator Type | Direct |
| Temperature | -20–60 °C-4–140 °F |
| Water Rating | IP54 |
| Certification | CE | ROHS | EMC |
| Idle Current | 0.009 A9 mA |
| Connectivity | |
| Connector | JR (Universal) |
| Wire Length | 300 mm11.81 in |
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 | Average Stronger than 58% of 1043 Digital Standard servos at 4.8V |
| Speed | Below Average Faster than 14% of 1041 Digital Standard servos at 4.8V |
| Weight | Average Lighter than 38% of 1902 Digital Standard servos |
| Running Current | Average Lower draw than 53% of 173 Digital Standard servos at 4.8V |
| Stall Current | Average Lower draw than 58% of 539 Digital Standard servos |
Performance Analysis
| Shaft Power | 2.43–6.21 W |
| Power Density | 3.438 W/in³ More power-dense than 64% of 1759 Digital Standard servos |
| Torque Density | 3.6765 oz-in/g Stronger than 53% of 1036 Digital Standard servos |
| Torque-to-Volume Ratio | 138.43 oz-in/in³ Denser torque than 59% of 1042 Digital Standard servos |
| Speed-to-Weight | 0.07740 (1/sec·g) Faster than 11% of 1033 Digital Standard servos |
| Speed-Torque Trade-off | 47.50 Better balanced than 73% of 1031 Digital Standard servos |
| Current-per-Torque Ratio | 0.0120 A/oz-in More efficient than 67% of 315 Digital Standard servos |
| Idle-to-Running Current Ratio | 0.038 Lower idle draw than 70% of 112 Digital Standard servos |
| No-Load vs Stall Current Spread | 12.50 Narrower current spread than 67% of 132 Digital Standard servos |
| Torque Gain per Volt | 23.54%/V More voltage-responsive (torque) than 91% of 850 Digital Standard servos |
| Speed Gain per Volt | 22.43%/V More voltage-responsive (speed) than 88% of 871 Digital Standard servos |
| Voltage Range Width | 2.6 V Wider voltage range than 67% of 1539 Digital Standard servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0013 Finer dead band than 60% of 468 Digital Standard servos |
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Reviews (3)
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Игорь
April 9, 2017Application(s): Стоит на рудере 2.2 м
Comments: Слабое место- шестерня, слизало шлицы
Paul
December 16, 2013Application(s): SCX10 and Axail Wrait.
Comments: Had it for years now. Powered off a BEC @6v. Unstoppable. Mine has been through rivers and all-sorts of muck. Keeps on ticking and is as strong as a bull. Helps push those weighted 2.2 TSLs.
TCCustoms
June 18, 2013Application(s): Axial AX-10 Rock Crawler front steering servo
Comments: Holy Crap...this this is fast and strong! Running on 2s 7.4v and it doesnt hesitate for anything. Wished it was waterproof but still very happy