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Technical Specifications
Last Updated: 2026-10-26
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | BBR-BMS-591SG |
| Category | Hobby |
| Performance | |
| Torque |
8.4V677.80 oz-in48.81 kg-cm4.8 N-m |
| Speed |
8.4V
0.11 sec/60°
545.5 deg/s
90.9 RPM
7.4V
0.11 sec/60°
545.5 deg/s
90.9 RPM
6.0V
0.14 sec/60°
428.6 deg/s
71.4 RPM
|
| Physical | |
| Weight | 5.94 oz168.5 gBottom 10% |
| Dimensions |
L 2.35 in W 1.165 in H 2.15 in L 59.7 mm W 29.6 mm H 54.6 mm |
| Case Material | Aluminum / Plastic |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Stainless Steel |
| Gear Spline/Teeth | 15 T |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Neutral Position | 1500 µs |
| Dead Band | 2 µs |
| Refresh Rate | 333 Hz |
| Control System | PWM |
| Electrical & Environment | |
| Operating Voltage | 4.5–8.7 V |
| Power Source | 2S Li-Po / 2S Li-Fe |
| Temperature | 85 °C185 °F |
| Connectivity | |
| Connector | JR (Universal) estimate |
| Wire Length | 300 mm11.81 in |
| Origin | |
| Country of Origin | Taiwan |
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 | Bottom 10% Lighter than 3% of 145 Digital Large servos |
Performance Analysis
| Shaft Power | 11.39 W |
| Power Density | 1.936 W/in³ More power-dense than 70% of 112 Digital Large servos |
| Torque Density | 4.0226 oz-in/g |
| Torque-to-Volume Ratio | 115.15 oz-in/in³ |
| Speed-to-Weight | 0.04239 (1/sec·g) |
| Speed-Torque Trade-off | 94.89 |
| Voltage Range Width | 4.2 V Wider voltage range than 62% of 124 Digital Large servos |
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