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Technical Specifications
Last Updated: 2026-10-10
Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | KAV20.1257MG |
| Category | Hobby |
| Performance | |
| Torque |
8.4V
222.24 oz-in
16.00 kg-cm
1.6 N-m
7.4V
201.41 oz-in
14.50 kg-cm
1.4 N-m
6.0V
180.57 oz-in
13.00 kg-cm
1.3 N-m
4.8V
138.90 oz-in
10.00 kg-cm
1.0 N-m
Average
|
| Speed |
8.4V
0.06 sec/60°
1,000.0 deg/s
166.7 RPM
7.4V
0.07 sec/60°
857.1 deg/s
142.9 RPM
6.0V
0.07 sec/60°
857.1 deg/s
142.9 RPM
4.8V
0.08 sec/60°
750.0 deg/s
125.0 RPM
Above Average
|
| Physical | |
| Weight | 2.02 oz57.2 gBelow Average |
| Dimensions |
L 1.58 in W 0.80 in H 1.04 in L 40.1 mm W 20.3 mm H 26.4 mm |
| Case Material | Aluminum |
| Drivetrain | |
| Motor Type | Brushless |
| Gears | Steel |
| Gear Spline/Teeth | 25 T |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 180° |
| Mechanical Limit | 180° |
| Pulse Width | 500-2500 µs |
| Neutral Position | 1500 µs |
| Programmable | Yes |
| Electrical & Environment | |
| Operating Voltage | 4.8–8.4 V |
| 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 51% of 136 Digital Low Profile servos at 4.8V |
| Speed | Above Average Faster than 69% of 135 Digital Low Profile servos at 4.8V |
| Weight | Below Average Lighter than 24% of 251 Digital Low Profile servos |
Performance Analysis
| Shaft Power | 3.21–6.85 W |
| Power Density | 5.210 W/in³ More power-dense than 67% of 215 Digital Low Profile servos |
| Torque Density | 2.4283 oz-in/g Stronger than 38% of 136 Digital Low Profile servos |
| Torque-to-Volume Ratio | 105.66 oz-in/in³ Denser torque than 57% of 136 Digital Low Profile servos |
| Speed-to-Weight | 0.21853 (1/sec·g) Faster than 55% of 135 Digital Low Profile servos |
| Speed-Torque Trade-off | 11.11 Better balanced than 35% of 134 Digital Low Profile servos |
| Torque Gain per Volt | 16.67%/V More voltage-responsive (torque) than 59% of 115 Digital Low Profile servos |
| Speed Gain per Volt | 9.26%/V More voltage-responsive (speed) than 13% of 117 Digital Low Profile servos |
| Voltage Range Width | 3.6 V Wider voltage range than 82% of 223 Digital Low Profile servos |
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