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Technical Specifications
Last Updated: 2026-10-10
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 1043 Digital Standard servos at 5.0V |
| Speed | Bottom 10% Faster than 9% of 1041 Digital Standard servos at 5.0V |
| Weight | Bottom 10% Lighter than 4% of 1902 Digital Standard servos |
| Running Current | Below Average Lower draw than 24% of 173 Digital Standard servos at 5.0V |
| Stall Current | Bottom 10% Lower draw than 7% of 539 Digital Standard servos |
Performance Analysis
| Shaft Power | 4.19–11.70 W |
| Power Density | 6.128 W/in³ More power-dense than 85% of 1759 Digital Standard servos |
| Torque Density | 5.3262 oz-in/g Stronger than 81% of 1036 Digital Standard servos |
| Torque-to-Volume Ratio | 237.02 oz-in/in³ Denser torque than 89% of 1042 Digital Standard servos |
| Speed-to-Weight | 0.05882 (1/sec·g) Faster than 2% of 1033 Digital Standard servos |
| Speed-Torque Trade-off | 90.55 Better balanced than 94% of 1031 Digital Standard servos |
| Current-per-Torque Ratio | 0.0181 A/oz-in More efficient than 37% of 315 Digital Standard servos |
| Idle-to-Running Current Ratio | 0.020 Lower idle draw than 85% of 112 Digital Standard servos |
| No-Load vs Stall Current Spread | 16.40 Narrower current spread than 51% of 132 Digital Standard servos |
| Torque Gain per Volt | 19.94%/V More voltage-responsive (torque) than 78% of 850 Digital Standard servos |
| Speed Gain per Volt | 19.61%/V More voltage-responsive (speed) than 77% of 871 Digital Standard servos |
| Voltage Range Width | 3.4 V Wider voltage range than 70% of 1539 Digital Standard servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0010 Finer dead band than 65% of 468 Digital Standard servos |
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