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Technical Specifications
Last Updated: 2026-10-26
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | 30121 |
| Category | Hobby |
| Discontinued | Yes |
| Performance | |
| Torque |
7.4V
244.46 oz-in
17.60 kg-cm
1.7 N-m
6.0V
201.41 oz-in
14.50 kg-cm
1.4 N-m
Average
|
| Speed |
7.4V
0.06 sec/60°
1,000.0 deg/s
166.7 RPM
6.0V
0.07 sec/60°
857.1 deg/s
142.9 RPM
Top 10%
|
| Physical | |
| Weight | 2.47 oz69.9 gAverage |
| Dimensions |
L 1.614 in W 0.787 in H 1.476 in L 41.0 mm W 20.0 mm H 37.5 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Aluminum |
| Gear Spline/Teeth | 23 T estimate |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Control System | HCS / PWM |
| Programmable | Yes |
| Electrical & Environment | |
| Operating Voltage | 6–7.4 V |
| Power Source | LiPo / LiFe / Ni-MH |
| Origin | |
| Country of Origin | Japan |
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 46% of 1060 Digital Standard servos at 6.0V |
| Speed | Top 10% Faster than 91% of 1045 Digital Standard servos at 6.0V |
| Weight | Average Lighter than 36% of 1880 Digital Standard servos |
Performance Analysis
| Shaft Power | 5.32–7.53 W |
| Power Density | 4.018 W/in³ More power-dense than 71% of 1768 Digital Standard servos |
| Torque Density | 2.8814 oz-in/g Stronger than 40% of 1053 Digital Standard servos |
| Torque-to-Volume Ratio | 107.43 oz-in/in³ Denser torque than 47% of 1058 Digital Standard servos |
| Speed-to-Weight | 0.20437 (1/sec·g) Faster than 88% of 1038 Digital Standard servos |
| Speed-Torque Trade-off | 14.10 Better balanced than 22% of 1034 Digital Standard servos |
| Torque Gain per Volt | 15.27%/V More voltage-responsive (torque) than 47% of 873 Digital Standard servos |
| Speed Gain per Volt | 11.91%/V More voltage-responsive (speed) than 28% of 874 Digital Standard servos |
| Voltage Range Width | 1.4 V Wider voltage range than 30% of 1560 Digital Standard servos |
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