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Technical Specifications
Last Updated: 2026-10-26
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | HS-305BB |
| Category | Hobby |
| Discontinued | Yes |
| Performance | |
| Torque |
6.0V
51.38 oz-in
3.70 kg-cm
0.4 N-m
4.8V
41.66 oz-in
3.00 kg-cm
0.3 N-m
Bottom 10%
|
| Speed |
6.0V
0.15 sec/60°
400.0 deg/s
66.7 RPM
4.8V
0.19 sec/60°
315.8 deg/s
52.6 RPM
Average
|
| Physical | |
| Weight | 1.68 oz47.5 gAverage |
| Dimensions |
L 1.61 in W 0.78 in H 1.43 in L 40.9 mm W 19.8 mm H 36.3 mm |
| Drivetrain | |
| Motor Type | 3-pole |
| Gears | Plastic |
| Gear Spline/Teeth | 24 T estimate |
| Rotation Mode | Positional |
| Rotation/Support | Single Bearing |
| Control & Signal | |
| Modulation | Analog |
| Direction | Clockwise |
| Rotational Range | 90° |
| Pulse Cycle | 20 ms |
| Pulse Width | 900-2100 µs |
| Neutral Position | 1500 µs |
| Refresh Rate | 50 Hz |
| Signal Voltage | 3-5V |
| Electrical & Environment | |
| Operating Voltage | 4.8–6 V |
| Connectivity | |
| Connector | JR (Universal) estimate |
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 | Bottom 10% Stronger than 6% of 198 Analog Standard servos at 4.8V |
| Speed | Average Faster than 39% of 195 Analog Standard servos at 4.8V |
| Weight | Average Lighter than 55% of 447 Analog Standard servos |
Performance Analysis
| Shaft Power | 0.41–0.63 W |
| Power Density | 0.353 W/in³ More power-dense than 23% of 432 Analog Standard servos |
| Torque Density | 0.8771 oz-in/g Stronger than 5% of 198 Analog Standard servos |
| Torque-to-Volume Ratio | 23.20 oz-in/in³ Denser torque than 11% of 198 Analog Standard servos |
| Speed-to-Weight | 0.11080 (1/sec·g) Faster than 45% of 195 Analog Standard servos |
| Speed-Torque Trade-off | 7.92 Better balanced than 9% of 195 Analog Standard servos |
| Torque Gain per Volt | 19.44%/V More voltage-responsive (torque) than 72% of 156 Analog Standard servos |
| Speed Gain per Volt | 22.22%/V More voltage-responsive (speed) than 85% of 156 Analog Standard servos |
| Voltage Range Width | 1.2 V Wider voltage range than 28% of 239 Analog Standard servos |
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