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Technical Specifications
Last Updated: 2026-10-22
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | BMS-660MG+HS |
| Category | Hobby |
| Discontinued | Yes |
| Performance | |
| Torque |
6.0V
195.00 oz-in
14.04 kg-cm
1.4 N-m
4.8V
176.00 oz-in
12.67 kg-cm
1.2 N-m
|
| Speed |
6.0V
0.09 sec/60°
666.7 deg/s
111.1 RPM
4.8V
0.20 sec/60°
300.0 deg/s
50.0 RPM
|
| Stall Current | ≤1.2 A≤1200 mAAverage |
| Physical | |
| Weight | 1.59 oz45.0 gAbove Average |
| Dimensions |
L 1.594 in W 0.787 in H 1.654 in L 40.5 mm W 20.0 mm H 42.0 mm |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Metal |
| Gear Spline/Teeth | 25 T estimate |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Analog |
| Pulse Cycle | 8 ms |
| Neutral Position | 1520 µs |
| Refresh Rate | 125 Hz |
| Control System | PWM |
| Electrical & Environment | |
| Operating Voltage | 4.5–6.5 V |
| Power Source | Ni-MH / Ni-CD |
| Temperature | -20–60 °C-4–140 °F |
| Certification | RoHS |
| Idle Current | 0.003 A3 mA |
| Connectivity | |
| Connector | JR (Universal) |
| Wire Length | 300 mm11.81 in |
| Origin | |
| Country of Origin | China |
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 | Above Average Lighter than 66% of 447 Analog Standard servos |
| Stall Current | Average Lower draw than 65% of 63 Analog Standard servos |
Performance Analysis
| Shaft Power | 1.63–4.01 W |
| Power Density | 1.931 W/in³ More power-dense than 99% of 432 Analog Standard servos |
| Torque Density | 3.9111 oz-in/g |
| Torque-to-Volume Ratio | 84.82 oz-in/in³ |
| Speed-to-Weight | 0.11111 (1/sec·g) |
| Speed-Torque Trade-off | 35.20 |
| Current-per-Torque Ratio | 0.0068 A/oz-in |
| Voltage Range Width | 2.0 V Wider voltage range than 89% of 239 Analog Standard servos |
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