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Technical Specifications
Last Updated: 2026-10-08
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | PTK-7308 |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
48.60 oz-in
3.50 kg-cm
0.3 N-m
6.0V
41.66 oz-in
3.00 kg-cm
0.3 N-m
3.8V
36.11 oz-in
2.60 kg-cm
0.3 N-m
Above Average
|
| Speed |
8.4V
0.07 sec/60°
857.1 deg/s
142.9 RPM
6.0V
0.08 sec/60°
750.0 deg/s
125.0 RPM
3.8V
0.18 sec/60°
333.3 deg/s
55.6 RPM
Bottom 10%
|
| Physical | |
| Weight | 0.28 oz8.0 gAbove Average |
| Dimensions |
L 0.93 in W 0.31 in H 0.67 in L 23.6 mm W 7.9 mm H 17.0 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Metal |
| Gear Spline/Teeth | 15 T estimate |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 180° |
| Pulse Width | 500-2500 µs |
| Dead Band | 3 µs |
| Refresh Rate | 333 Hz |
| Angle Sensor | Potentiometer |
| Programmable | No |
| Electrical & Environment | |
| Operating Voltage | 3.8–8.4 V |
| Temperature | -20–60 °C-4–140 °F |
| Connectivity | |
| Connector | JR (Universal) |
| Wire Length | 200 mm7.87 in |
| Origin | |
| Country of Origin | China |
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 | Above Average Stronger than 71% of 328 Digital Micro servos at 3.8V |
| Speed | Bottom 10% Faster than 6% of 328 Digital Micro servos at 3.8V |
| Weight | Above Average Lighter than 68% of 620 Digital Micro servos |
Performance Analysis
| Shaft Power | 0.37–1.28 W |
| Power Density | 6.646 W/in³ More power-dense than 87% of 590 Digital Micro servos |
| Torque Density | 4.5138 oz-in/g Stronger than 91% of 327 Digital Micro servos |
| Torque-to-Volume Ratio | 186.94 oz-in/in³ Denser torque than 91% of 327 Digital Micro servos |
| Speed-to-Weight | 0.69444 (1/sec·g) Faster than 42% of 327 Digital Micro servos |
| Speed-Torque Trade-off | 6.50 Better balanced than 83% of 327 Digital Micro servos |
| Torque Gain per Volt | 7.52%/V More voltage-responsive (torque) than 5% of 268 Digital Micro servos |
| Speed Gain per Volt | 34.16%/V More voltage-responsive (speed) than 97% of 273 Digital Micro servos |
| Voltage Range Width | 4.6 V Wider voltage range than 93% of 511 Digital Micro servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0015 Finer dead band than 44% of 189 Digital Micro servos |
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