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Technical Specifications
Last Updated: 2026-10-25
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | W45 |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
624.90 oz-in
45.00 kg-cm
4.4 N-m
7.4V
555.50 oz-in
40.00 kg-cm
3.9 N-m
6.0V
472.20 oz-in
34.00 kg-cm
3.3 N-m
Above Average
|
| Speed |
8.4V
0.18 sec/60°
333.3 deg/s
55.6 RPM
7.4V
0.19 sec/60°
315.8 deg/s
52.6 RPM
6.0V
0.20 sec/60°
300.0 deg/s
50.0 RPM
Bottom 10%
|
| Running Current |
8.4V
0.400 A
400 mA
7.4V
0.300 A
300 mA
6.0V
0.200 A
200 mA
Average
|
| Stall Current | 3.2–3.7 A3200–3700 mAAverage |
| Physical | |
| Weight | 2.91 oz82.5 gBottom 10% |
| Dimensions |
L 1.60 in W 0.81 in H 1.52 in L 40.6 mm W 20.6 mm H 38.6 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Titanium / Steel |
| Gear Spline/Teeth | 25 T estimate |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Direction | Counterclockwise |
| Rotational Range | 110° |
| Mechanical Limit | 180° |
| Pulse Cycle | 3.03 ms |
| Pulse Width | 800-2200 µs |
| Neutral Position | 1500 µs |
| Dead Band | 2 µs |
| Refresh Rate | 330 Hz |
| Angle Sensor | Potentiometer |
| Control System | PWM |
| Electrical & Environment | |
| Operating Voltage | 6–8.4 V |
| Temperature | -10–60 °C14–140 °F |
| Water Rating | IP67 |
| Idle Current | 0.037 A37 mA |
| Connectivity | |
| Connector | JR (Universal) |
| Wire Length | 360 mm14.17 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 89% of 1055 Digital Standard servos at 6.0V |
| Speed | Bottom 10% Faster than 9% of 1038 Digital Standard servos at 6.0V |
| Weight | Bottom 10% Lighter than 7% of 1872 Digital Standard servos |
| Running Current | Average Lower draw than 51% of 226 Digital Standard servos at 6.0V |
| Stall Current | Average Lower draw than 40% of 569 Digital Standard servos |
Performance Analysis
| Shaft Power | 4.37–6.42 W |
| Power Density | 3.259 W/in³ More power-dense than 63% of 1762 Digital Standard servos |
| Torque Density | 5.7236 oz-in/g Stronger than 85% of 1048 Digital Standard servos |
| Torque-to-Volume Ratio | 239.71 oz-in/in³ Denser torque than 90% of 1053 Digital Standard servos |
| Speed-to-Weight | 0.06061 (1/sec·g) Faster than 2% of 1031 Digital Standard servos |
| Speed-Torque Trade-off | 94.44 Better balanced than 95% of 1029 Digital Standard servos |
| Current-per-Torque Ratio | 0.0078 A/oz-in More efficient than 93% of 330 Digital Standard servos |
| Idle-to-Running Current Ratio | 0.185 Lower idle draw than 22% of 167 Digital Standard servos |
| No-Load vs Stall Current Spread | 18.50 Narrower current spread than 47% of 179 Digital Standard servos |
| Torque Gain per Volt | 13.47%/V More voltage-responsive (torque) than 37% of 868 Digital Standard servos |
| Speed Gain per Volt | 4.63%/V More voltage-responsive (speed) than 2% of 868 Digital Standard servos |
| Voltage Range Width | 2.4 V Wider voltage range than 47% of 1552 Digital Standard servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0014 Finer dead band than 54% of 501 Digital Standard servos |
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Reviews (1)
Includes 1 review aggregated from around the web.
There are very few reviews for this servo on the web. One owner fitted it with a new motor in an Absima CR 4.4 Patrol and was very pleased with the significant improvement.
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