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 | SPMSA4040 |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
96.00 oz-in
6.91 kg-cm
0.7 N-m
7.4V
91.00 oz-in
6.55 kg-cm
0.6 N-m
6.0V
84.00 oz-in
6.05 kg-cm
0.6 N-m
|
| Speed |
8.4V
0.10 sec/60°
600.0 deg/s
100.0 RPM
8.4V
0.10 sec/60°
600.0 deg/s
100.0 RPM
7.4V
0.12 sec/60°
500.0 deg/s
83.3 RPM
7.4V
0.12 sec/60°
500.0 deg/s
83.3 RPM
6.0V
0.16 sec/60°
375.0 deg/s
62.5 RPM
6.0V
0.16 sec/60°
375.0 deg/s
62.5 RPM
|
| Physical | |
| Weight | 0.92 oz26.0 gAverage |
| Dimensions |
L 1.10 in W 0.54 in H 1.23 in L 27.9 mm W 13.7 mm H 31.2 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Metal |
| Gear Spline/Teeth | 23 T |
| Rotation/Support | Single Bearing |
| Control & Signal | |
| Modulation | Digital |
| Dead Band | 1 µs |
| Control System | PWM |
| Programmable | No |
| Electrical & Environment | |
| Operating Voltage | 4.8–8.4 V |
| Connectivity | |
| Connector | JR (Universal) |
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 | Average Lighter than 46% of 466 Digital Mini servos |
Performance Analysis
| Shaft Power | 0.97–1.78 W |
| Power Density | 2.429 W/in³ More power-dense than 68% of 440 Digital Mini servos |
| Torque Density | 3.2308 oz-in/g |
| Torque-to-Volume Ratio | 114.97 oz-in/in³ |
| Speed-to-Weight | 0.24039 (1/sec·g) |
| Speed-Torque Trade-off | 13.44 |
| Voltage Range Width | 3.6 V Wider voltage range than 87% of 351 Digital Mini servos |
Similar Active Servos
Reviews of Spektrum A4040
Be the first to review!