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Technical Specifications
Last Updated: 2026-10-25
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
Average
|
| 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 gBottom 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 | Average Stronger than 63% of 290 Digital Mini servos at 6.0V |
| Speed | Above Average Faster than 76% of 293 Digital Mini servos at 6.0V |
| Weight | Bottom 10% Lighter than 10% of 505 Digital Mini servos |
Performance Analysis
| Shaft Power | 1.43–2.57 W |
| Power Density | 2.415 W/in³ More power-dense than 64% of 482 Digital Mini servos |
| Torque Density | 1.7350 oz-in/g Stronger than 24% of 286 Digital Mini servos |
| Torque-to-Volume Ratio | 65.31 oz-in/in³ Denser torque than 40% of 288 Digital Mini servos |
| Speed-to-Weight | 0.27778 (1/sec·g) Faster than 33% of 289 Digital Mini servos |
| Speed-Torque Trade-off | 6.25 Better balanced than 41% of 288 Digital Mini servos |
| Torque Gain per Volt | 16.67%/V More voltage-responsive (torque) than 53% of 257 Digital Mini servos |
| Speed Gain per Volt | 11.90%/V More voltage-responsive (speed) than 20% of 262 Digital Mini servos |
| Voltage Range Width | 2.4 V Wider voltage range than 54% of 405 Digital Mini servos |
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