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Technical Specifications
Last Updated: 2026-10-10
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | BLS505 |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
97.16 oz-in
7.00 kg-cm
0.7 N-m
7.4V
86.06 oz-in
6.20 kg-cm
0.6 N-m
6.0V
69.40 oz-in
5.00 kg-cm
0.5 N-m
Bottom 10%
|
| Speed |
8.4V
0.07 sec/60°
857.1 deg/s
142.9 RPM
7.4V
0.08 sec/60°
750.0 deg/s
125.0 RPM
6.0V
0.09 sec/60°
666.7 deg/s
111.1 RPM
Above Average
|
| Physical | |
| Weight | 1.41 oz40.0 gTop 10% |
| Dimensions |
L 1.398 in W 0.591 in H 1.287 in L 35.5 mm W 15.0 mm H 32.7 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Brushless |
| Gears | Steel |
| Gear Spline/Teeth | 25 T estimate |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 100° |
| Pulse Cycle | 3 ms |
| Pulse Width | 900-2100 µs |
| Refresh Rate | 333 Hz |
| Angle Sensor | Potentiometer |
| Control System | PWM |
| Programmable | Yes |
| Electrical & Environment | |
| Operating Voltage | 6–8.4 V |
| Temperature | -10–65 °C14–149 °F |
| 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
| Torque | Bottom 10% Stronger than 9% of 1043 Digital Standard servos at 6.0V |
| Speed | Above Average Faster than 83% of 1041 Digital Standard servos at 6.0V |
| Weight | Top 10% Lighter than 95% of 1902 Digital Standard servos |
Performance Analysis
| Shaft Power | 1.43–2.57 W |
| Power Density | 2.415 W/in³ More power-dense than 50% of 1759 Digital Standard servos |
| Torque Density | 1.7350 oz-in/g Stronger than 16% of 1036 Digital Standard servos |
| Torque-to-Volume Ratio | 65.31 oz-in/in³ Denser torque than 23% of 1042 Digital Standard servos |
| Speed-to-Weight | 0.27778 (1/sec·g) Faster than 93% of 1033 Digital Standard servos |
| Speed-Torque Trade-off | 6.25 Better balanced than 7% of 1031 Digital Standard servos |
| Torque Gain per Volt | 16.67%/V More voltage-responsive (torque) than 59% of 850 Digital Standard servos |
| Speed Gain per Volt | 11.90%/V More voltage-responsive (speed) than 29% of 871 Digital Standard servos |
| Voltage Range Width | 2.4 V Wider voltage range than 58% of 1539 Digital Standard servos |
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