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Technical Specifications
Last Updated: 2026-10-09| Identity | |
| Brand |  |
| Product Number | 474519 |
| Category | Hobby |
| Discontinued | Yes |
| Performance | |
| Torque |
6.0V
33.00 oz-in
2.38 kg-cm
0.2 N-m
4.8V
28.00 oz-in
2.02 kg-cm
0.2 N-m
Bottom 10%
|
| Speed |
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 | 0.92 oz26.0 gAverage |
| Dimensions |
L 1.26 in W 0.63 in H 1.26 in L 32.0 mm W 16.0 mm H 32.0 mm |
| Case Material | Plastic |
| Drivetrain | |
| Motor Type | 3-pole |
| Gears | Plastic |
| Gear Spline/Teeth | 23 T |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Digital |
| Rotational Range | 180° |
| Pulse Cycle | 3.7 ms |
| Pulse Width | 1000-2000 µs |
| Neutral Position | 1500 µs |
| Refresh Rate | 333 Hz |
| Angle Sensor | Potentiometer |
| Control System | PWM |
| Programmable | No |
| Electrical & Environment | |
| Operating Voltage | 4.8–6 V |
| Connectivity | |
| Connector | JR (Universal) |
| Origin | |
| Country of Origin | Japan |
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 | Bottom 10% Stronger than 9% of 262 Digital Mini servos at 4.8V |
| Speed | Above Average Faster than 88% of 263 Digital Mini servos at 4.8V |
| Weight | Average Lighter than 47% of 466 Digital Mini servos |
Performance Analysis
| Shaft Power | 0.65–0.87 W |
| Power Density | 0.872 W/in³ More power-dense than 12% of 440 Digital Mini servos |
| Torque Density | 1.0769 oz-in/g Stronger than 6% of 258 Digital Mini servos |
| Torque-to-Volume Ratio | 27.99 oz-in/in³ Denser torque than 2% of 262 Digital Mini servos |
| Speed-to-Weight | 0.48077 (1/sec·g) Faster than 78% of 259 Digital Mini servos |
| Speed-Torque Trade-off | 2.24 Better balanced than 6% of 261 Digital Mini servos |
| Torque Gain per Volt | 14.88%/V More voltage-responsive (torque) than 40% of 232 Digital Mini servos |
| Speed Gain per Volt | 11.90%/V More voltage-responsive (speed) than 24% of 235 Digital Mini servos |
| Voltage Range Width | 1.2 V Wider voltage range than 25% of 351 Digital Mini servos |
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Reviews (1)
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BasementEngineer
March 21, 2012Application(s): Used for tail rotor on 450 electric helicopter
Comments: The Airtronics 94819 fast BB servo appears to be *very* well-made, with two ball bearings supporting the output shaft and high-quality plastic gears that have no perceptible freeplay. The ball bearing races also have a snug fit on both the inside and outside diameters, giving no slop at all at the output arm. It is a quiet and smooth running servo, with no overshoot or jitter/chatter at all. Very nicely done by any stretch, but this servo is only 30 bucks from airtronics.net, plus five bucks shipping to my front door in Ontario, Canada! The 94819 gives excellent performance on my 450 electric heli tail rotor. The specs listed on this website are as published on the box, and dimensions are correct.