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Technical Specifications
Last Updated: 2026-10-25
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | BMS-4112 |
| Category | Hobby |
| Discontinued | Yes |
| Performance | |
| Torque |
8.4V
659.80 oz-in
47.51 kg-cm
4.7 N-m
7.4V
580.60 oz-in
41.81 kg-cm
4.1 N-m
6.0V
493.10 oz-in
35.51 kg-cm
3.5 N-m
|
| Speed |
8.4V
0.11 sec/60°
545.5 deg/s
90.9 RPM
7.4V
0.12 sec/60°
500.0 deg/s
83.3 RPM
6.0V
0.15 sec/60°
400.0 deg/s
66.7 RPM
|
| Physical | |
| Weight | 2.33 oz66.0 gAverage |
| Dimensions |
L 1.59 in W 0.79 in H 1.54 in L 40.4 mm W 20.1 mm H 39.1 mm |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Steel |
| Gear Spline/Teeth | 25 T |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Neutral Position | 1500 µs |
| Dead Band | 1 µs |
| Refresh Rate | 333 Hz |
| Electrical & Environment | |
| Operating Voltage | 4.5–8.5 V |
| Power Source | 2S Li-Po / 2S Li-Fe |
| Connectivity | |
| Connector | JR (Universal) estimate |
| Origin | |
| Country of Origin | Taiwan |
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 | Average Lighter than 42% of 1880 Digital Standard servos |
Performance Analysis
| Shaft Power | 6.08–11.09 W |
| Power Density | 5.733 W/in³ More power-dense than 84% of 1768 Digital Standard servos |
| Torque Density | 7.4712 oz-in/g |
| Torque-to-Volume Ratio | 254.91 oz-in/in³ |
| Speed-to-Weight | 0.10101 (1/sec·g) |
| Speed-Torque Trade-off | 73.97 |
| Voltage Range Width | 4.0 V Wider voltage range than 91% of 1560 Digital Standard servos |
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