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Technical Specifications
Last Updated: 2026-10-24
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | OMG-D4-20BF |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
319.00 oz-in
22.97 kg-cm
2.3 N-m
7.4V
305.00 oz-in
21.96 kg-cm
2.2 N-m
6.0V
278.00 oz-in
20.02 kg-cm
2.0 N-m
4.8V
250.00 oz-in
18.00 kg-cm
1.8 N-m
Above Average
|
| Speed |
8.4V
0.05 sec/60°
1,200.0 deg/s
200.0 RPM
7.4V
0.06 sec/60°
1,090.9 deg/s
181.8 RPM
6.0V
0.06 sec/60°
1,000.0 deg/s
166.7 RPM
4.8V
0.07 sec/60°
857.1 deg/s
142.9 RPM
Above Average
|
| Stall Current | ≤3.2 A≤3200 mAAverage |
| Physical | |
| Weight | 2.05 oz58.0 gBelow Average |
| Dimensions |
L 1.61 in W 0.81 in H 1.14 in L 40.9 mm W 20.6 mm H 29.0 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Brushless |
| Gears | Stainless Steel |
| Gear Spline/Teeth | 25 T |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 120° |
| Mechanical Limit | 120° |
| Pulse Cycle | 3.003 ms |
| Neutral Position | 1520 µs |
| Refresh Rate | 333 Hz |
| Control System | PWM |
| Programmable | Yes |
| Electrical & Environment | |
| Operating Voltage | 4.8–8.4 V |
| Regulator Type | BEC |
| Connectivity | |
| Connector | JR (Universal) |
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 | Above Average Stronger than 84% of 186 Digital Low Profile servos at 4.8V |
| Speed | Above Average Faster than 81% of 183 Digital Low Profile servos at 4.8V |
| Weight | Below Average Lighter than 24% of 304 Digital Low Profile servos |
| Stall Current | Average Lower draw than 61% of 81 Digital Low Profile servos |
Performance Analysis
| Shaft Power | 6.60–11.80 W |
| Power Density | 7.935 W/in³ More power-dense than 87% of 273 Digital Low Profile servos |
| Torque Density | 4.3103 oz-in/g Stronger than 85% of 185 Digital Low Profile servos |
| Torque-to-Volume Ratio | 168.16 oz-in/in³ Denser torque than 77% of 186 Digital Low Profile servos |
| Speed-to-Weight | 0.24631 (1/sec·g) Faster than 72% of 182 Digital Low Profile servos |
| Speed-Torque Trade-off | 17.50 Better balanced than 63% of 183 Digital Low Profile servos |
| Current-per-Torque Ratio | 0.0128 A/oz-in More efficient than 88% of 58 Digital Low Profile servos |
| Torque Gain per Volt | 7.67%/V More voltage-responsive (torque) than 4% of 164 Digital Low Profile servos |
| Speed Gain per Volt | 11.11%/V More voltage-responsive (speed) than 26% of 163 Digital Low Profile servos |
| Voltage Range Width | 3.6 V Wider voltage range than 75% of 276 Digital Low Profile servos |
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