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Technical Specifications
Last Updated: 2026-10-25
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | B-12KG |
| Category | Hobby |
| Discontinued | Yes |
| Performance | |
| Torque |
7.4V
444.40 oz-in
32.00 kg-cm
3.1 N-m
6.0V
277.70 oz-in
20.00 kg-cm
2.0 N-m
|
| Speed |
7.4V
0.13 sec/60°
461.5 deg/s
76.9 RPM
6.0V
0.15 sec/60°
400.0 deg/s
66.7 RPM
|
| Running Current |
7.4V
0.150 A
150 mA
6.0V
0.120 A
120 mA
4.8V
0.100 A
100 mA
Above Average
|
| Stall Current | 4–7.4 A4000–7400 mABottom 10% |
| Physical | |
| Weight | 2.50 oz71.0 gBelow Average |
| Dimensions |
L 1.598 in W 0.815 in H 1.654 in L 40.6 mm W 20.7 mm H 42.0 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Coreless |
| Gears | Steel |
| Gear Spline/Teeth | 25 T |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 100° |
| Mechanical Limit | 130° |
| Pulse Width | 800-2200 µs |
| Refresh Rate | 333 Hz |
| Control System | PWM |
| Electrical & Environment | |
| Operating Voltage | 4.8–7.4 V |
| Temperature | -10–50 °C14–122 °F |
| Water Rating | IP67 |
| Idle Current | 0.005 A5 mA |
| Connectivity | |
| Connector | JR (Universal) |
| Wire Length | 150 mm5.91 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
| Weight | Below Average Lighter than 31% of 1880 Digital Standard servos |
| Running Current | Above Average Lower draw than 88% of 226 Digital Standard servos at 4.8V |
| Stall Current | Bottom 10% Lower draw than 9% of 570 Digital Standard servos |
Performance Analysis
| Shaft Power | 3.42–6.32 W |
| Power Density | 2.934 W/in³ More power-dense than 59% of 1768 Digital Standard servos |
| Torque Density | 3.9113 oz-in/g |
| Torque-to-Volume Ratio | 128.92 oz-in/in³ |
| Speed-to-Weight | 0.09390 (1/sec·g) |
| Speed-Torque Trade-off | 41.66 |
| Current-per-Torque Ratio | 0.0266 A/oz-in |
| Idle-to-Running Current Ratio | 0.050 Lower idle draw than 52% of 167 Digital Standard servos |
| No-Load vs Stall Current Spread | 74.00 Narrower current spread than 2% of 179 Digital Standard servos |
| Voltage Range Width | 2.6 V Wider voltage range than 66% of 1560 Digital Standard servos |
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