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Technical Specifications
Last Updated: 2026-10-25
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | MACB8555HV |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
759.64 oz-in
54.70 kg-cm
5.4 N-m
7.4V
669.37 oz-in
48.20 kg-cm
4.7 N-m
6.0V
543.00 oz-in
39.10 kg-cm
3.8 N-m
5.0V
452.73 oz-in
32.60 kg-cm
3.2 N-m
Above Average
|
| Speed |
8.4V
0.12 sec/60°
500.0 deg/s
83.3 RPM
7.4V
0.13 sec/60°
461.5 deg/s
76.9 RPM
6.0V
0.17 sec/60°
352.9 deg/s
58.8 RPM
5.0V
0.20 sec/60°
300.0 deg/s
50.0 RPM
Bottom 10%
|
| Running Current |
8.4V
1.000 A
1,000 mA
7.4V
0.900 A
900 mA
6.0V
0.600 A
600 mA
5.0V
0.500 A
500 mA
Below Average
|
| Stall Current | 5.1–8.2 A5100–8200 mABottom 10% |
| Physical | |
| Weight | 3.00 oz85.0 gBottom 10% |
| Dimensions |
L 1.57 in W 0.79 in H 1.54 in L 39.9 mm W 20.1 mm H 39.1 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Brushless |
| Gears | Steel |
| Gear Spline/Teeth | 25 T |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Direction | Counterclockwise |
| Rotational Range | 180° |
| Mechanical Limit | 180° |
| Pulse Cycle | 3.03 ms |
| Pulse Width | 500-2500 µs |
| Neutral Position | 1500 µs |
| Dead Band | 2 µs |
| Refresh Rate | 330 Hz |
| Control System | PWM |
| Electrical & Environment | |
| Operating Voltage | 5–8.4 V |
| Temperature | -10–50 °C14–122 °F |
| Water Rating | Waterproof |
| Idle Current | 0.010 A10 mA |
| Connectivity | |
| Connector | JR (Universal) |
| Wire Length | 310 mm12.2 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 | Above Average Stronger than 88% of 1055 Digital Standard servos at 5.0V |
| Speed | Bottom 10% Faster than 9% of 1038 Digital Standard servos at 5.0V |
| Weight | Bottom 10% Lighter than 4% of 1872 Digital Standard servos |
| Running Current | Below Average Lower draw than 18% of 226 Digital Standard servos at 5.0V |
| Stall Current | Bottom 10% Lower draw than 6% of 569 Digital Standard servos |
Performance Analysis
| Shaft Power | 4.19–11.70 W |
| Power Density | 6.128 W/in³ More power-dense than 86% of 1762 Digital Standard servos |
| Torque Density | 5.3262 oz-in/g Stronger than 82% of 1048 Digital Standard servos |
| Torque-to-Volume Ratio | 237.02 oz-in/in³ Denser torque than 90% of 1053 Digital Standard servos |
| Speed-to-Weight | 0.05882 (1/sec·g) Faster than 2% of 1031 Digital Standard servos |
| Speed-Torque Trade-off | 90.55 Better balanced than 95% of 1029 Digital Standard servos |
| Current-per-Torque Ratio | 0.0181 A/oz-in More efficient than 34% of 330 Digital Standard servos |
| Idle-to-Running Current Ratio | 0.020 Lower idle draw than 84% of 167 Digital Standard servos |
| No-Load vs Stall Current Spread | 16.40 Narrower current spread than 55% of 179 Digital Standard servos |
| Torque Gain per Volt | 19.94%/V More voltage-responsive (torque) than 77% of 868 Digital Standard servos |
| Speed Gain per Volt | 19.61%/V More voltage-responsive (speed) than 77% of 868 Digital Standard servos |
| Voltage Range Width | 3.4 V Wider voltage range than 70% of 1552 Digital Standard servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0010 Finer dead band than 64% of 501 Digital Standard servos |
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