Discover XQ-Power Servos in Our eBay Store!
Shop Now
Technical Specifications
Last Updated: 2026-10-10
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | HD-1581HB |
| Category | Hobby |
| Discontinued | Yes |
| Performance | |
| Torque |
6.0V
36.10 oz-in
2.60 kg-cm
0.3 N-m
4.8V
30.60 oz-in
2.20 kg-cm
0.2 N-m
|
| Speed |
6.0V
0.16 sec/60°
375.0 deg/s
62.5 RPM
4.8V
0.21 sec/60°
285.7 deg/s
47.6 RPM
|
| Running Current |
6.0V0.300 A300 mA |
| Stall Current | ≤1.2 A≤1200 mATop 10% |
| Physical | |
| Weight | 0.43 oz12.3 gTop 10% |
| Dimensions |
L 0.90 in W 0.47 in H 1.16 in L 22.9 mm W 11.9 mm H 29.5 mm |
| Drivetrain | |
| Gears | Nylon |
| Gear Spline/Teeth | 25 T estimate |
| Rotation/Support | Single Bearing |
| Control & Signal | |
| Modulation | Digital |
| Electrical & Environment | |
| Operating Voltage | 4.5–6 V |
| Connectivity | |
| Connector | JR (Universal) estimate |
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
| Weight | Top 10% Lighter than 98% of 466 Digital Mini servos |
| Stall Current | Top 10% Lower draw than 91% of 76 Digital Mini servos |
Performance Analysis
| Shaft Power | 0.27–0.42 W |
| Power Density | 0.850 W/in³ More power-dense than 11% of 440 Digital Mini servos |
| Torque Density | 2.4878 oz-in/g |
| Torque-to-Volume Ratio | 62.36 oz-in/in³ |
| Speed-to-Weight | 0.38715 (1/sec·g) |
| Speed-Torque Trade-off | 6.43 |
| Current-per-Torque Ratio | 0.0392 A/oz-in |
| No-Load vs Stall Current Spread | 4.00 |
| Voltage Range Width | 1.5 V Wider voltage range than 47% of 351 Digital Mini servos |
Similar Active Servos
Reviews of Power HD HD-1581HB
Be the first to review!