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Technical Specifications
Last Updated: 2026-07-28
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | TS-THS921B |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
136.10 oz-in
9.80 kg-cm
1.0 N-m
7.4V
123.60 oz-in
8.90 kg-cm
0.9 N-m
6.0V
106.90 oz-in
7.70 kg-cm
0.8 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
0.10 sec/60°
600.0 deg/s
100.0 RPM
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 | Brushless |
| Gears | Metal |
| Gear Spline/Teeth | 25 T |
| Shaft Size | 4.9 mm |
| Rotation Mode | Standard |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Pulse Width | 500-2500 µs |
| Neutral Position | 1520 µs |
| Refresh Rate | 400 Hz |
| Angle Sensor | Magnetic Encoder |
| Control System | PWM |
| Programmable | No |
| Electrical & Environment | |
| Operating Voltage | 6–8.4 V |
| Connectivity | |
| Connector | JR (Universal) estimate |
| Wire Length | 190 mm7.48 in |
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 97% of the 244 Digital Micro servos at 6.0V |
| Speed | Average Faster than 55% of the 244 Digital Micro servos at 6.0V |
| Weight | Bottom 10% Lighter than 5% of the 575 Digital Micro servos |
Performance Analysis
| Torque Density | 5.0905 oz-in/g Stronger than 95% of the 242 Digital Micro servos in the database |
| Torque-to-Volume Ratio | 231.43 oz-in/in³ Denser torque than 95% of the 244 Digital Micro servos in the database |
| Speed-to-Weight | 0.47619 (1/sec·g) Faster than 13% of the 242 Digital Micro servos in the database |
| Speed-Torque Trade-off | 10.69 Better balanced than 93% of the 244 Digital Micro servos in the database |
| Torque Gain per Volt | 11.38%/V More voltage-responsive (torque) than 22% of the 195 Digital Micro servos in the database |
| Speed Gain per Volt | 10.42%/V More voltage-responsive (speed) than 13% 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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