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Technical Specifications
Last Updated: 2026-07-10
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | BL8125 |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
97.00 oz-in
6.98 kg-cm
0.7 N-m
7.4V
86.00 oz-in
6.19 kg-cm
0.6 N-m
6.0V
69.00 oz-in
4.97 kg-cm
0.5 N-m
Bottom 10%
|
| Speed |
8.4V
0.03 sec/60°
1,818.2 deg/s
303.0 RPM
7.4V
0.04 sec/60°
1,578.9 deg/s
263.2 RPM
6.0V
0.05 sec/60°
1,304.3 deg/s
217.4 RPM
Top 10%
|
| Physical | |
| Weight | 2.33 oz66.0 gAverage |
| Dimensions |
L 1.54 in W 0.79 in H 1.61 in L 39.1 mm W 20.1 mm H 40.9 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Brushless |
| Gears | Steel |
| Gear Spline/Teeth | 25 T |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Electrical & Environment | |
| Operating Voltage | 6–8.4 V |
| Water Rating | IP67 |
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 | Bottom 10% Stronger than 9% of 1043 Digital Standard servos at 6.0V |
| Speed | Top 10% Faster than 98% of 1041 Digital Standard servos at 6.0V |
| Weight | Average Lighter than 40% of 1902 Digital Standard servos |
Performance Analysis
| Shaft Power | 2.77–5.43 W |
| Power Density | 2.775 W/in³ More power-dense than 56% of 1759 Digital Standard servos |
| Torque Density | 1.0455 oz-in/g Stronger than 4% of 1036 Digital Standard servos |
| Torque-to-Volume Ratio | 35.23 oz-in/in³ Denser torque than 6% of 1042 Digital Standard servos |
| Speed-to-Weight | 0.32938 (1/sec·g) Faster than 97% of 1033 Digital Standard servos |
| Speed-Torque Trade-off | 3.17 Better balanced than 3% of 1031 Digital Standard servos |
| Torque Gain per Volt | 16.91%/V More voltage-responsive (torque) than 63% of 850 Digital Standard servos |
| Speed Gain per Volt | 16.42%/V More voltage-responsive (speed) than 54% of 871 Digital Standard servos |
| Voltage Range Width | 2.4 V Wider voltage range than 47% of 1539 Digital Standard servos |
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