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Technical Specifications
Last Updated: 2026-09-16
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | OTRBL9188 |
| Category | Hobby |
| Discontinued | Yes |
| Performance | |
| Torque |
8.4V
83.28 oz-in
6.00 kg-cm
0.6 N-m
7.4V
76.34 oz-in
5.50 kg-cm
0.5 N-m
6.0V
61.77 oz-in
4.45 kg-cm
0.4 N-m
|
| Speed |
8.4V
0.03 sec/60°
1,764.7 deg/s
294.1 RPM
7.4V
0.04 sec/60°
1,621.6 deg/s
270.3 RPM
6.0V
0.05 sec/60°
1,333.3 deg/s
222.2 RPM
|
| Physical | |
| Weight | 2.15 oz61.0 gAverage |
| Dimensions |
L 1.57 in W 0.79 in H 1.52 in L 39.9 mm W 20.1 mm H 38.6 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Brushless |
| Gears | Titanium |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Neutral Position | 760 µs |
| Control System | PWM |
| Electrical & Environment | |
| Operating Voltage | 5.2–8.4 V |
| Power Source | 2S LiPo |
| Regulator Type | Direct |
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
| Weight | Average Lighter than 57% of 1902 Digital Standard servos |
Performance Analysis
| Shaft Power | 2.54–4.53 W |
| Power Density | 2.402 W/in³ More power-dense than 50% of 1759 Digital Standard servos |
| Torque Density | 1.0135 oz-in/g |
| Torque-to-Volume Ratio | 32.76 oz-in/in³ |
| Speed-to-Weight | 0.36460 (1/sec·g) |
| Speed-Torque Trade-off | 2.78 |
| Voltage Range Width | 3.2 V Wider voltage range than 69% of 1539 Digital Standard servos |
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