Discover XQ-Power Servos in Our eBay Store!
Shop Now
Technical Specifications
Last Updated: 2026-10-10
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | BBR-BLS-H51B |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
873.60 oz-in
62.91 kg-cm
6.2 N-m
7.4V
773.60 oz-in
55.71 kg-cm
5.5 N-m
6.0V
641.70 oz-in
46.21 kg-cm
4.5 N-m
|
| Speed |
8.4V
0.09 sec/60°
666.7 deg/s
111.1 RPM
7.4V
0.10 sec/60°
600.0 deg/s
100.0 RPM
6.0V
0.12 sec/60°
500.0 deg/s
83.3 RPM
|
| Physical | |
| Weight | 2.96 oz84.0 gBottom 10% |
| Dimensions |
L 1.594 in W 0.827 in H 1.516 in L 40.5 mm W 21.0 mm H 38.5 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Brushless |
| Gears | Stainless Steel |
| Gear Spline/Teeth | 25 T |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Neutral Position | 1500 µs |
| Dead Band | 1 µs |
| Refresh Rate | 333 Hz |
| Control System | PWM |
| Electrical & Environment | |
| Operating Voltage | 4.5–8.5 V |
| Power Source | 2S Li-Po / 2S Li-Fe |
| Connectivity | |
| Connector | JR (Universal) estimate |
| 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 5% of 1902 Digital Standard servos |
Performance Analysis
| Shaft Power | 9.89–17.95 W |
| Power Density | 8.981 W/in³ More power-dense than 96% of 1759 Digital Standard servos |
| Torque Density | 7.6393 oz-in/g |
| Torque-to-Volume Ratio | 321.10 oz-in/in³ |
| Speed-to-Weight | 0.09921 (1/sec·g) |
| Speed-Torque Trade-off | 77.00 |
| Voltage Range Width | 4.0 V Wider voltage range than 93% of 1539 Digital Standard servos |
Similar Active Servos
Reviews of Blue Bird BLS-H51B-V2
Be the first to review!