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Technical Specifications
Last Updated: 2026-10-22
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | BHX8 |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
833.20 oz-in
60.00 kg-cm
5.9 N-m
7.4V
763.80 oz-in
55.00 kg-cm
5.4 N-m
6.0V
694.40 oz-in
50.00 kg-cm
4.9 N-m
Top 10%
|
| Speed |
8.4V
0.07 sec/60°
857.1 deg/s
142.9 RPM
7.4V
0.08 sec/60°
769.2 deg/s
128.2 RPM
6.0V
0.11 sec/60°
545.5 deg/s
90.9 RPM
Above Average
|
| Running Current |
8.4V
0.300 A
300 mA
7.4V
0.300 A
300 mA
6.0V
0.200 A
200 mA
Average
|
| Stall Current | 2–2.6 A2000–2600 mAAbove Average |
| Physical | |
| Weight | 2.89 oz82.0 gBottom 10% |
| Dimensions |
L 1.57 in W 0.79 in H 1.54 in L 39.9 mm W 20.1 mm H 39.1 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | 4-pole |
| Gears | Steel |
| Gear Spline/Teeth | 25 T estimate |
| Shaft Size | 5.9 mm |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Direction | Clockwise |
| Rotational Range | 90° |
| Mechanical Limit | 180° |
| Pulse Cycle | 3 ms |
| Pulse Width | 500-2500 µs |
| Neutral Position | 1500 µs |
| Dead Band | 2 µs |
| Refresh Rate | 333 Hz |
| Angle Sensor | Potentiometer |
| Control System | PWM |
| Programmable | Yes |
| Electrical & Environment | |
| Operating Voltage | 6–8.4 V |
| Temperature | -10–60 °C14–140 °F |
| Idle Current | 0.070 A70 mA |
| Connectivity | |
| Connector | JR (Universal) |
| Wire Length | 300 mm11.81 in |
| Origin | |
| Country of Origin | China |
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 | Top 10% Stronger than 98% of 1055 Digital Standard servos at 6.0V |
| Speed | Above Average Faster than 71% of 1038 Digital Standard servos at 6.0V |
| Weight | Bottom 10% Lighter than 7% of 1872 Digital Standard servos |
| Running Current | Average Lower draw than 51% of 226 Digital Standard servos at 6.0V |
| Stall Current | Above Average Lower draw than 72% of 569 Digital Standard servos |
Performance Analysis
| Shaft Power | 11.67–22.01 W |
| Power Density | 11.522 W/in³ More power-dense than 99% of 1762 Digital Standard servos |
| Torque Density | 8.4683 oz-in/g Stronger than 99% of 1048 Digital Standard servos |
| Torque-to-Volume Ratio | 363.55 oz-in/in³ Denser torque than 98% of 1053 Digital Standard servos |
| Speed-to-Weight | 0.11087 (1/sec·g) Faster than 47% of 1031 Digital Standard servos |
| Speed-Torque Trade-off | 76.38 Better balanced than 91% of 1029 Digital Standard servos |
| Current-per-Torque Ratio | 0.0037 A/oz-in 3rd-highest current-per-torque ratio of 330 Digital Standard servos |
| Idle-to-Running Current Ratio | 0.350 Lower idle draw than 8% of 167 Digital Standard servos |
| No-Load vs Stall Current Spread | 13.00 Narrower current spread than 68% of 179 Digital Standard servos |
| Torque Gain per Volt | 8.33%/V More voltage-responsive (torque) than 12% of 868 Digital Standard servos |
| Speed Gain per Volt | 23.80%/V More voltage-responsive (speed) than 91% of 868 Digital Standard servos |
| Voltage Range Width | 2.4 V Wider voltage range than 47% of 1552 Digital Standard servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0010 Finer dead band than 77% of 501 Digital Standard servos |
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