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Technical Specifications
Last Updated: 2026-10-26
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | WK-4001 |
| Category | Hobby |
| Discontinued | Yes |
| Performance | |
| Torque |
4.8V138.87 oz-in10.00 kg-cm1.0 N-mBelow Average |
| Speed |
4.8V0.18 sec/60°333.3 deg/s55.6 RPMBelow Average |
| Physical | |
| Weight | 1.52 oz43.0 gTop 10% |
| Dimensions |
L 1.606 in W 0.787 in H 1.425 in L 40.8 mm W 20.0 mm H 36.2 mm |
| Control & Signal | |
| Modulation | Digital |
| Electrical & Environment | |
| Operating Voltage | 4.8–6 V |
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 | Below Average Stronger than 29% of 1060 Digital Standard servos at 4.8V |
| Speed | Below Average Faster than 22% of 1045 Digital Standard servos at 4.8V |
| Weight | Top 10% Lighter than 93% of 1880 Digital Standard servos |
Performance Analysis
| Shaft Power | 1.43 W |
| Power Density | 0.792 W/in³ More power-dense than 12% of 1768 Digital Standard servos |
| Torque Density | 3.2295 oz-in/g Stronger than 46% of 1053 Digital Standard servos |
| Torque-to-Volume Ratio | 77.10 oz-in/in³ Denser torque than 31% of 1058 Digital Standard servos |
| Speed-to-Weight | 0.12920 (1/sec·g) Faster than 61% of 1038 Digital Standard servos |
| Speed-Torque Trade-off | 25.00 Better balanced than 44% of 1034 Digital Standard servos |
| Voltage Range Width | 1.2 V Wider voltage range than 16% of 1560 Digital Standard servos |
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