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Technical Specifications
Last Updated: 2026-10-26
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | A73BHN-V2 |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
263.86 oz-in
19.00 kg-cm
1.9 N-m
7.4V
236.09 oz-in
17.00 kg-cm
1.7 N-m
6.0V
208.31 oz-in
15.00 kg-cm
1.5 N-m
4.8V
194.42 oz-in
14.00 kg-cm
1.4 N-m
Average
|
| Speed |
8.4V
0.06 sec/60°
983.6 deg/s
163.9 RPM
7.4V
0.07 sec/60°
882.4 deg/s
147.1 RPM
6.0V
0.08 sec/60°
800.0 deg/s
133.3 RPM
4.8V
0.09 sec/60°
705.9 deg/s
117.6 RPM
Above Average
|
| Running Current |
8.4V
0.450 A
450 mA
7.4V
0.400 A
400 mA
6.0V
0.350 A
350 mA
4.8V
0.280 A
280 mA
Average
|
| Physical | |
| Weight | 2.59 oz73.5 gBelow Average |
| Dimensions |
L 1.575 in W 0.787 in H 1.476 in L 40.0 mm W 20.0 mm H 37.5 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Brushless |
| Motor Drive | FET |
| Gears | Titanium / Steel |
| Gear Spline/Teeth | 25 T |
| Shaft Size | 5.9 mm |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Direction | Counterclockwise |
| Rotational Range | 180° |
| Mechanical Limit | 220° |
| Pulse Cycle | 3 ms |
| Pulse Width | 500-2500 µs |
| Neutral Position | 1520 µs |
| Dead Band | 2 µs |
| Refresh Rate | 333 Hz |
| Angle Sensor | Potentiometer |
| Control System | PWM |
| Programmable | Yes |
| Electrical & Environment | |
| Operating Voltage | 4.8–8.4 V |
| Power Source | 2S LiPo |
| Regulator Type | Direct |
| Temperature | -15–70 °C5–158 °F |
| Water Rating | None |
| Certification | CE | ROHS | UKCA |
| 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 | Average Stronger than 44% of 1061 Digital Standard servos at 4.8V |
| Speed | Above Average Faster than 85% of 1044 Digital Standard servos at 4.8V |
| Weight | Below Average Lighter than 23% of 1880 Digital Standard servos |
| Running Current | Average Lower draw than 40% of 227 Digital Standard servos at 4.8V |
Performance Analysis
| Shaft Power | 4.23–8.00 W |
| Power Density | 4.372 W/in³ More power-dense than 74% of 1763 Digital Standard servos |
| Torque Density | 2.6452 oz-in/g Stronger than 36% of 1054 Digital Standard servos |
| Torque-to-Volume Ratio | 106.27 oz-in/in³ Denser torque than 46% of 1059 Digital Standard servos |
| Speed-to-Weight | 0.16006 (1/sec·g) Faster than 78% of 1037 Digital Standard servos |
| Speed-Torque Trade-off | 16.53 Better balanced than 27% of 1035 Digital Standard servos |
| Torque Gain per Volt | 9.92%/V More voltage-responsive (torque) than 18% of 873 Digital Standard servos |
| Speed Gain per Volt | 10.93%/V More voltage-responsive (speed) than 23% of 873 Digital Standard servos |
| Voltage Range Width | 3.6 V Wider voltage range than 72% of 1560 Digital Standard servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0010 Finer dead band than 60% of 496 Digital Standard servos |
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Other Versions
This model has 1 other version. Only specs that differ are shown.
A73BHNH Tail Servo
- Gears Steel
- Case Material Aluminum / Plastic
- Certification CE | ROHS | FCC
- Rotation Range 90°
- Programmable No
- Product Number A73BHNH
- Torque @ 4.8V 194 oz-in
- Torque @ 6V 208 oz-in
- Torque @ 7.4V 229 oz-in
- Torque @ 8.4V 243 oz-in
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