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Technical Specifications
Last Updated: 2026-10-10
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | HC2621SG |
| Category | Hobby |
| Performance | |
| Torque |
7.4V
277.70 oz-in
20.00 kg-cm
2.0 N-m
6.0V
222.20 oz-in
16.00 kg-cm
1.6 N-m
Average
|
| Speed |
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
Above Average
|
| Running Current |
7.4V
4.000 A
4,000 mA
6.0V
3.300 A
3,300 mA
Bottom 10%
|
| Physical | |
| Weight | 2.72 oz77.0 gBelow Average |
| Dimensions |
L 1.57 in W 0.79 in H 1.46 in L 39.9 mm W 20.1 mm H 37.1 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Coreless |
| Motor Drive | FET |
| Gears | Metal |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Direction | Counterclockwise |
| Neutral Position | 1500 µs |
| Control System | PWM |
| Electrical & Environment | |
| Operating Voltage | 6–7.4 V |
| Temperature | -20–60 °C-4–140 °F |
| Connectivity | |
| Connector | JR (Universal) |
| Wire Length | 300 mm11.81 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 | Average Stronger than 50% of 1042 Digital Standard servos at 6.0V |
| Speed | Above Average Faster than 73% of 1038 Digital Standard servos at 6.0V |
| Weight | Below Average Lighter than 17% of 1902 Digital Standard servos |
| Running Current | Bottom 10% Lower draw than 9% of 177 Digital Standard servos at 6.0V |
Performance Analysis
| Torque Density | 2.8857 oz-in/g Stronger than 41% of 1036 Digital Standard servos |
| Torque-to-Volume Ratio | 122.71 oz-in/in³ Denser torque than 52% of 1041 Digital Standard servos |
| Speed-to-Weight | 0.12987 (1/sec·g) Faster than 59% of 1031 Digital Standard servos |
| Speed-Torque Trade-off | 22.22 Better balanced than 40% of 1028 Digital Standard servos |
| Torque Gain per Volt | 17.84%/V More voltage-responsive (torque) than 68% of 847 Digital Standard servos |
| Speed Gain per Volt | 7.94%/V More voltage-responsive (speed) than 9% of 865 Digital Standard servos |
| Voltage Range Width | 1.4 V Wider voltage range than 25% of 1546 Digital Standard servos |
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