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Technical Specifications
Last Updated: 2026-09-09Identity
Performance
Physical
Drivetrain
Control & Signal
Electrical & Environment
Connectivity
Origin
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| Identity | |
| Brand |  |
| Product Number | 31075S |
| Category | Hobby |
| Performance | |
| Torque |
6.0V
114.00 oz-in
8.21 kg-cm
0.8 N-m
4.8V
92.00 oz-in
6.62 kg-cm
0.6 N-m
|
| Speed |
6.0V
0.34 sec/60°
176.5 deg/s
29.4 RPM
4.8V
0.45 sec/60°
133.3 deg/s
22.2 RPM
|
| Running Current |
6.0V
180.000 A
180,000 mA
4.8V
150.000 A
150,000 mA
|
| Stall Current | ≤1 A≤1000 mA |
| Physical | |
| Weight | 1.23 oz34.9 g |
| Dimensions |
L 1.73 in W 0.90 in H 0.98 in L 43.9 mm W 22.9 mm H 24.9 mm |
| Case Material | Plastic |
| Drivetrain | |
| Motor Type | 3-pole |
| Motor Drive | (add) |
| Gears | Nylon |
| Gear Spline/Teeth | 24 T estimate |
| Shaft Size | (add) |
| Rotation Mode | (add) |
| Rotation/Support | Single Bearing |
| Backlash | (add) |
| Control & Signal | |
| Modulation | Analog |
| Direction | Clockwise |
| Rotational Range | 170° |
| Mechanical Limit | 180° |
| Pulse Cycle | 20 ms |
| Pulse Width | 1400-1600 µs |
| Neutral Position | 1500 µs |
| Dead Band | 20 µs |
| Refresh Rate | (add) |
| Angle Sensor | Indirect Switch Drive |
| Control System | PWM |
| Programmable | (add) |
| Signal Voltage | 3-5V |
| Electrical & Environment | |
| Operating Voltage | 4.8–6 V |
| Power Source | Direct |
| Regulator Type | Direct |
| Temperature | -20–60 °C-4–140 °F |
| Water Rating | IP54 |
| Certification | (add) |
| Idle Current | 0.001 A1 mA |
| Connectivity | |
| Connector | JR (Universal) |
| Wire Length | 300 mm11.81 in |
| Origin | |
| Country of Origin | (add) |
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.
Performance Analysis
| Shaft Power | 0.38–0.62 W |
| Torque Density | 2.6361 oz-in/g Stronger than 70% of the 117 Hitec servos in the database |
| Torque-to-Volume Ratio | 60.29 oz-in/in³ Denser torque than 44% of the 117 Hitec servos in the database |
| Power Density | 0.406 W/in³ More power-dense than 36% of the 51 Analog Low Profile servos in the database |
| Speed-to-Weight | 0.06367 (1/sec·g) Faster than 18% of the 117 Hitec servos in the database |
| Speed-Torque Trade-off | 41.41 Better balanced than 72% of the 117 Hitec servos in the database |
| Current-per-Torque Ratio | 0.0109 A/oz-in 3rd-highest current-per-torque ratio of 55 Hitec servos |
| Idle-to-Running Current Ratio | 0.000 1st-highest idle-to-running current ratio of 34 Hobby servos |
| No-Load vs Stall Current Spread | 0.01 5th-highest no-load vs stall current spread of 61 Hobby servos |
| Torque Gain per Volt | 19.93%/V More voltage-responsive (torque) than 60% of the 107 Hitec servos in the database |
| Speed Gain per Volt | 27.01%/V 5th-highest speed gain per volt of 107 Hitec servos |
| Voltage Range Width | 1.2 V Wider voltage range than 68% of the 26 Analog Low Profile servos in the database |
| Dead-Band-to-Pulse-Width Ratio | 0.1000 Finer dead band than 0% of the 58 Hitec servos in the database |
Notes
This servo is not positional but moves slowly from one end of the operating range to the other without interruption.
Quick Actions
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Reviews (6)
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speed2004
February 12, 2026Application(s): retracts
Comments: Price in 2026 is now 34.95
Roger507
September 24, 2017Application(s): 46 airplane retract servo
Comments: I have had 4 of them and all have failed. Smoke burned an d just short out. Junk
Austin
August 17, 2017Application(s): tc3
Comments: Doesn't fit in my tc3 chassis and when I plug it in it doesn't even work
Giorgio
June 17, 2017Application(s): retracts
Comments: Works very well with 4 elements battery , but with 5 elements (more than 6 volts) doesn't work at all.
Conquest
December 7, 2015Application(s): Classic Pattern Airplane
Comments: Use this servo for my main MK retracts in my Classic Pattern Plane. Flawless. Never had a failure. Set them up properly and they will serve you well. Remember, these servos run 180 degrees and stop. Gear is up or gear is down, nothing in between.
Rafas
August 14, 2014Application(s): The retractable gear P47 / thunderbolt hangar 9 .60
Comments: Bad experience, just run a flight, US $ 30 down the drain