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Technical Specifications
Last Updated: 2026-09-16
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 48% of 846 Digital Standard servos at 4.8V |
| Speed | Above Average Faster than 83% of 834 Digital Standard servos at 4.8V |
| Weight | Below Average Lighter than 21% of 1820 Digital Standard servos |
| Running Current | Average Lower draw than 56% of 76 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 1646 Digital Standard servos |
| Torque Density | 2.6452 oz-in/g Stronger than 39% of 835 Digital Standard servos |
| Torque-to-Volume Ratio | 106.27 oz-in/in³ Denser torque than 48% of 845 Digital Standard servos |
| Speed-to-Weight | 0.16006 (1/sec·g) Faster than 74% of 824 Digital Standard servos |
| Speed-Torque Trade-off | 16.53 Better balanced than 32% of 829 Digital Standard servos |
| Torque Gain per Volt | 9.92%/V More voltage-responsive (torque) than 18% of 675 Digital Standard servos |
| Speed Gain per Volt | 10.93%/V More voltage-responsive (speed) than 23% of 689 Digital Standard servos |
| Voltage Range Width | 3.6 V Wider voltage range than 73% of 1273 Digital Standard servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0010 Finer dead band than 66% of 329 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 Titanium
- 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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