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Technical Specifications
Last Updated: 2026-10-22| Identity | |
| Brand |  |
| Product Number | 31425CR |
| Category | Hobby |
| Discontinued | Yes |
| Performance | |
| Torque |
6.0V
42.00 oz-in
3.02 kg-cm
0.3 N-m
4.8V
38.80 oz-in
2.79 kg-cm
0.3 N-m
Bottom 10%
|
| Speed |
6.0V
0.19 sec/60°
315.8 deg/s
52.6 RPM
4.8V
0.23 sec/60°
260.9 deg/s
43.5 RPM
Below Average
|
| Stall Current | ≥0.64 A≥640 mA |
| Physical | |
| Weight | 1.47 oz41.7 gAbove Average |
| Dimensions |
L 1.59 in W 0.77 in H 1.44 in L 40.4 mm W 19.6 mm H 36.6 mm |
| Case Material | Plastic |
| Drivetrain | |
| Motor Type | 3-pole |
| Gears | Nylon |
| Gear Spline/Teeth | 24 T estimate |
| Rotation Mode | Continuous |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Analog |
| Direction | Clockwise |
| Rotational Range | 360° |
| Pulse Cycle | 20 ms |
| Pulse Width | 1200-1800 µs |
| Neutral Position | 1500 µs |
| Dead Band | 10 µs |
| Angle Sensor | Potentiometer |
| Control System | PWM |
| Programmable | No |
| Signal Voltage | 3-5V |
| Electrical & Environment | |
| Operating Voltage | 4.8–6 V |
| Temperature | -20–60 °C-4–140 °F |
| Water Rating | IP4X |
| Idle Current | 0.003 A3 mA |
| Connectivity | |
| Connector | JR (Universal) |
| Wire Length | 178 mm7.01 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 | Bottom 10% Stronger than 4% of 198 Analog Standard servos at 4.8V |
| Speed | Below Average Faster than 14% of 195 Analog Standard servos at 4.8V |
| Weight | Above Average Lighter than 79% of 448 Analog Standard servos |
Performance Analysis
| Shaft Power | 0.31–0.41 W |
| Power Density | 0.232 W/in³ More power-dense than 7% of 433 Analog Standard servos |
| Torque Density | 0.9305 oz-in/g Stronger than 9% of 198 Analog Standard servos |
| Torque-to-Volume Ratio | 22.01 oz-in/in³ Denser torque than 8% of 198 Analog Standard servos |
| Speed-to-Weight | 0.10426 (1/sec·g) Faster than 37% of 195 Analog Standard servos |
| Speed-Torque Trade-off | 8.92 Better balanced than 25% of 195 Analog Standard servos |
| Torque Gain per Volt | 6.87%/V More voltage-responsive (torque) than 9% of 156 Analog Standard servos |
| Speed Gain per Volt | 17.54%/V More voltage-responsive (speed) than 62% of 156 Analog Standard servos |
| Voltage Range Width | 1.2 V Wider voltage range than 55% of 239 Analog Standard servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0167 Finer dead band than 9% of 56 Analog Standard servos |
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Reviews (9)
Includes 8 reviews aggregated from around the web.
There are few reviews for this servo on the web. A robotics retailer shows 6 reviews, all 5 stars, with buyers saying it works well with no problems, has solid design and smooth gears, and is a good way to get continuous rotation without modifying a regular servo. One FTC student found it too slow for picking up blocks in an intake. No failures were reported.
-
Max
March 27, 2013Application(s): Propulsion of a two-wheeler.
Comments: Pros: ball bearings
Cons: big dead zone (about 0.12-0.14ms); 1.5ms neutral point is not centered within the dead zone; another 0.02ms on each side of the dead zone give you shattering movement; two motors I got was so badly different I had no luck to synchronize them up to any reasonable point.
Conclusion: Do not waste your money! Go with modification of HS-422. It gives much better results for less money. I feel robbed for 34 bucks. Thanks to HiTec for manufacturing this garbage and to RoborShop.ca for having no a customer review option on their site!