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Technical Specifications
Last Updated: 2026-07-28
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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 | TS-THS921A |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
104.20 oz-in
7.50 kg-cm
0.7 N-m
7.4V
94.40 oz-in
6.80 kg-cm
0.7 N-m
6.0V
80.50 oz-in
5.80 kg-cm
0.6 N-m
Top 10%
|
| Speed |
8.4V
0.08 sec/60°
750.0 deg/s
125.0 RPM
7.4V
0.09 sec/60°
666.7 deg/s
111.1 RPM
6.0V
0.11 sec/60°
545.5 deg/s
90.9 RPM
Average
|
| Running Current | (add) |
| Stall Current | ≤1.7 A≤1700 mABelow Average |
| Physical | |
| Weight | 0.74 oz21.0 gBottom 10% |
| Dimensions |
L 0.91 in W 0.47 in H 1.08 in L 23.1 mm W 11.9 mm H 27.4 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Coreless |
| Motor Drive | (add) |
| Gears | Metal |
| Gear Spline/Teeth | 25 T |
| Shaft Size | 4.9 mm |
| Rotation Mode | Standard |
| Rotation/Support | Dual Bearings |
| Backlash | (add) |
| Control & Signal | |
| Modulation | Digital |
| Direction | (add) |
| Rotational Range | (add) |
| Mechanical Limit | (add) |
| Pulse Cycle | (add) |
| Pulse Width | 500-2500 µs |
| Neutral Position | 1520 µs |
| Dead Band | (add) |
| Refresh Rate | 400 Hz |
| Angle Sensor | Magnetic Encoder |
| Control System | PWM |
| Programmable | No |
| Signal Voltage | (add) |
| Electrical & Environment | |
| Operating Voltage | 6–8.4 V |
| Power Source | (add) |
| Regulator Type | (add) |
| Temperature | (add) |
| Water Rating | (add) |
| Certification | (add) |
| Idle Current | (add) |
| Connectivity | |
| Connector | JR (Universal) estimate |
| Wire Length | 190 mm7.48 in |
| 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.
Class Comparison
| Torque | Top 10% Stronger than 93% of the 244 Digital Micro servos at 6.0V |
| Speed | Average Faster than 50% of the 244 Digital Micro servos at 6.0V |
| Weight | Bottom 10% Lighter than 5% of the 575 Digital Micro servos |
| Stall Current | Below Average Lower draw than 22% of the 140 Digital Micro servos |
Performance Analysis
| Torque Density | 3.8333 oz-in/g Stronger than 88% of the 242 Digital Micro servos in the database |
| Torque-to-Volume Ratio | 174.27 oz-in/in³ Denser torque than 91% of the 244 Digital Micro servos in the database |
| Speed-to-Weight | 0.43290 (1/sec·g) Faster than 7% of the 242 Digital Micro servos in the database |
| Speed-Torque Trade-off | 8.85 Better balanced than 91% of the 244 Digital Micro servos in the database |
| Current-per-Torque Ratio | 0.0211 A/oz-in More efficient than 89% of the 48 Digital Micro servos in the database |
| Torque Gain per Volt | 12.27%/V More voltage-responsive (torque) than 25% of the 195 Digital Micro servos in the database |
| Speed Gain per Volt | 15.62%/V More voltage-responsive (speed) than 37% of the 197 Digital Micro servos in the database |
| Voltage Range Width | 2.4 V Wider voltage range than 51% of the 409 Digital Micro servos in the database |
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