Discover XQ-Power Servos in Our eBay Store!
Shop Now
Technical Specifications
Last Updated: 2026-11-05| Identity | |
| Brand |  |
| Product Number | 31085S |
| Category | Hobby |
| Performance | |
| Torque |
6.0V
49.00 oz-in
3.53 kg-cm
0.3 N-m
4.8V
42.00 oz-in
3.02 kg-cm
0.3 N-m
Above Average
|
| Speed |
6.0V
0.14 sec/60°
428.6 deg/s
71.4 RPM
4.8V
0.16 sec/60°
375.0 deg/s
62.5 RPM
Below Average
|
| Running Current |
6.0V
0.280 A
280 mA
4.8V
0.280 A
280 mA
Below Average
|
| Stall Current | ≤1.2 A≤1200 mAAverage |
| Physical | |
| Weight | 0.67 oz19.0 gAverage |
| Dimensions |
L 1.14 in W 0.51 in H 1.18 in L 29.0 mm W 13.0 mm H 30.0 mm |
| Case Material | Plastic |
| Drivetrain | |
| Motor Type | Cored |
| Gears | Nylon |
| Gear Spline/Teeth | 24 T estimate |
| Rotation Mode | Positional |
| Rotation/Support | Single Bearing |
| Control & Signal | |
| Modulation | Analog |
| Direction | Clockwise |
| Rotational Range | 120° |
| Pulse Cycle | 20 ms |
| Pulse Width | 553-2300 µs |
| Dead Band | 5 µs |
| Angle Sensor | Potentiometer |
| Control System | PWM |
| Programmable | No |
| Signal Voltage | 3-5V |
| Electrical & Environment | |
| Operating Voltage | 4.8–6 V |
| Temperature | -20–60 °C-4–140 °F |
| Idle Current | 0.008 A8 mA |
| Connectivity | |
| Wire Length | 250 mm9.84 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
| Torque | Above Average Stronger than 74% of 77 Analog Mini servos at 4.8V |
| Speed | Below Average Faster than 29% of 77 Analog Mini servos at 4.8V |
| Weight | Average Lighter than 54% of 161 Analog Mini servos |
| Running Current | Below Average Lower draw than 30% of 57 Mini servos at 4.8V |
| Stall Current | Average Lower draw than 59% of 28 Analog Mini servos |
Performance Analysis
| Shaft Power | 0.49–0.65 W |
| Power Density | 0.943 W/in³ More power-dense than 62% of 158 Analog Mini servos |
| Torque Density | 2.2105 oz-in/g Stronger than 70% of 77 Analog Mini servos |
| Torque-to-Volume Ratio | 61.22 oz-in/in³ Denser torque than 75% of 77 Analog Mini servos |
| Speed-to-Weight | 0.32895 (1/sec·g) Faster than 45% of 77 Analog Mini servos |
| Speed-Torque Trade-off | 6.72 Better balanced than 70% of 77 Analog Mini servos |
| Current-per-Torque Ratio | 0.0286 A/oz-in More efficient than 34% of 81 Hitec servos |
| Idle-to-Running Current Ratio | 0.029 Lower idle draw than 65% of 61 Hitec servos |
| No-Load vs Stall Current Spread | 4.29 Narrower current spread than 91% of 56 Hitec servos |
| Torque Gain per Volt | 13.89%/V More voltage-responsive (torque) than 47% of 58 Analog Mini servos |
| Speed Gain per Volt | 11.91%/V More voltage-responsive (speed) than 21% of 58 Analog Mini servos |
| Voltage Range Width | 1.2 V Wider voltage range than 74% of 88 Analog Mini servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0029 Finer dead band than 76% of 22 Analog Mini servos |
Similar Active Servos
Reviews (38)
Includes 37 reviews aggregated from around the web.
There are few reviews for this servo on the web. The product listing shows a 4.5 out of 5 average from 30 ratings, with no detailed written feedback found. Forum posts about Hitec servos in this size class are generally favorable, though one hobbyist reported breaking several of the related HS-85BB+ units in a hobby project.
-
tinman
February 21, 2017Application(s): rogue 500 450 class heli
Comments: great servo, been using same servos very long time never let me down or fail me once. 2 years now. great buy