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Technical Specifications
Last Updated: 2026-07-10
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Identity
Performance
Physical
Drivetrain
Control & Signal
Electrical & Environment
Connectivity
Origin
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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
|
| Running Current | (add) |
| Stall Current | (add) |
| Physical | |
| Weight | 0.92 oz26.0 g |
| 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 | (add) |
| Drivetrain | |
| Motor Type | Coreless |
| Motor Drive | (add) |
| Gears | Metal |
| Gear Spline/Teeth | (add) |
| Shaft Size | (add) |
| Rotation Mode | (add) |
| Rotation/Support | Single Bearing |
| Backlash | (add) |
| Control & Signal | |
| Modulation | Digital |
| Direction | (add) |
| Rotational Range | (add) |
| Mechanical Limit | (add) |
| Pulse Cycle | (add) |
| Pulse Width | (add) |
| Neutral Position | (add) |
| Dead Band | 1 µs |
| Refresh Rate | (add) |
| Angle Sensor | (add) |
| Control System | PWM |
| Programmable | (add) |
| Signal Voltage | (add) |
| Electrical & Environment | |
| Operating Voltage | 4.8–8.4 V |
| Power Source | (add) |
| Regulator Type | (add) |
| Temperature | (add) |
| Water Rating | (add) |
| Certification | (add) |
| Idle Current | (add) |
| Connectivity | |
| Connector | JR (Universal) |
| Wire Length | (add) |
| Origin | |
| Country of Origin | (add) |
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.
Performance Analysis
| Shaft Power | 0.97–1.78 W |
| Torque Density | 3.2308 oz-in/g |
| Torque-to-Volume Ratio | 114.97 oz-in/in³ |
| Power Density | 2.429 W/in³ More power-dense than 72% of the 425 Digital Mini servos in the database |
| Speed-to-Weight | 0.24039 (1/sec·g) |
| Speed-Torque Trade-off | 13.44 |
| Voltage Range Width | 3.6 V Wider voltage range than 89% of the 288 Digital Mini servos in the database |
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