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Technical Specifications
Last Updated: 2026-10-23
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | PHD-S25 |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
416.70 oz-in
30.01 kg-cm
2.9 N-m
7.4V
347.25 oz-in
25.00 kg-cm
2.5 N-m
6.0V
298.64 oz-in
21.50 kg-cm
2.1 N-m
Above Average
|
| Speed |
8.4V
0.06 sec/60°
1,090.9 deg/s
181.8 RPM
7.4V
0.06 sec/60°
1,000.0 deg/s
166.7 RPM
6.0V
0.08 sec/60°
800.0 deg/s
133.3 RPM
Top 10%
|
| Physical | |
| Weight | 2.72 oz77.0 gBelow Average |
| Dimensions |
L 1.602 in W 0.807 in H 1.52 in L 40.7 mm W 20.5 mm H 38.6 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Brushless |
| Gears | Titanium / Steel |
| Gear Spline/Teeth | 25 T |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Neutral Position | 1520 µs |
| Refresh Rate | 333 Hz |
| Programmable | Yes |
| Electrical & Environment | |
| Operating Voltage | 6–8.4 V |
| Temperature | -20–60 °C-4–140 °F |
| Water Rating | Water Resistant |
| Connectivity | |
| Connector | JR (Universal) estimate |
| Origin | |
| Country of Origin | Hong Kong |
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 67% of 1055 Digital Standard servos at 6.0V |
| Speed | Top 10% Faster than 90% of 1038 Digital Standard servos at 6.0V |
| Weight | Below Average Lighter than 18% of 1872 Digital Standard servos |
Performance Analysis
| Shaft Power | 7.36–14.01 W |
| Power Density | 7.129 W/in³ More power-dense than 91% of 1762 Digital Standard servos |
| Torque Density | 3.8784 oz-in/g Stronger than 58% of 1048 Digital Standard servos |
| Torque-to-Volume Ratio | 151.97 oz-in/in³ Denser torque than 65% of 1053 Digital Standard servos |
| Speed-to-Weight | 0.17316 (1/sec·g) Faster than 82% of 1031 Digital Standard servos |
| Speed-Torque Trade-off | 22.40 Better balanced than 40% of 1029 Digital Standard servos |
| Torque Gain per Volt | 16.47%/V More voltage-responsive (torque) than 56% of 868 Digital Standard servos |
| Speed Gain per Volt | 15.15%/V More voltage-responsive (speed) than 47% of 868 Digital Standard servos |
| Voltage Range Width | 2.4 V Wider voltage range than 55% of 1552 Digital Standard servos |
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Reviews (4)
Includes 4 reviews aggregated from around the web.
There are very few reviews for this servo on the web. One owner has used it for a long time and calls it a great servo, and it is recommended for 1/8 GT car steering. Most other mentions are people considering it, with questions about whether it is too fast for their vehicle.
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