Discover XQ-Power Servos in Our eBay Store!
Shop Now
Technical Specifications
Last Updated: 2026-09-13| Identity | |
| Brand |  |
| Product Number | 37955S |
| Category | Hobby |
| Performance | |
| Torque |
7.4V
402.70 oz-in
29.00 kg-cm
2.8 N-m
6.0V
333.00 oz-in
23.98 kg-cm
2.4 N-m
4.8V
250.00 oz-in
18.00 kg-cm
1.8 N-m
|
| Speed |
7.4V
0.12 sec/60°
500.0 deg/s
83.3 RPM
6.0V
0.15 sec/60°
400.0 deg/s
66.7 RPM
4.8V
0.19 sec/60°
315.8 deg/s
52.6 RPM
|
| Running Current |
6.0V
0.300 A
300 mA
4.8V
0.220 A
220 mA
|
| Stall Current | 3.4–4.2 A3400–4200 mABelow Average |
| Physical | |
| Weight | 2.29 oz65.0 gAverage |
| Dimensions |
L 1.57 in W 0.78 in H 1.45 in L 39.9 mm W 19.8 mm H 36.8 mm |
| Case Material | Aluminum / Plastic |
| Drivetrain | |
| Motor Type | Coreless |
| Motor Drive | MOS |
| Gears | Titanium |
| Gear Spline/Teeth | 24 T |
| Shaft Size | 5.8 mm |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Backlash | 0.500° |
| Control & Signal | |
| Modulation | Digital |
| Direction | Clockwise |
| Rotational Range | 180° |
| Mechanical Limit | 175° |
| Pulse Cycle | 20 ms |
| Pulse Width | 900-2100 µs |
| Neutral Position | 1500 µs |
| Dead Band | 2 µs |
| Angle Sensor | Potentiometer |
| Control System | PWM |
| Programmable | Yes |
| Signal Voltage | 3-5V |
| Electrical & Environment | |
| Operating Voltage | 3.5–8.4 V |
| Power Source | 2S LiPo | Direct |
| Regulator Type | Direct |
| Temperature | -20–60 °C-4–140 °F |
| Water Rating | IP54 |
| Idle Current | 0.009 A9 mA |
| Connectivity | |
| Connector | JR (Universal) |
| Wire Length | 300 mm11.81 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
| Weight | Average Lighter than 45% of 1880 Digital Standard servos |
| Stall Current | Below Average Lower draw than 34% of 570 Digital Standard servos |
Performance Analysis
| Shaft Power | 2.43–6.20 W |
| Power Density | 3.494 W/in³ More power-dense than 67% of 1768 Digital Standard servos |
| Torque Density | 3.8462 oz-in/g |
| Torque-to-Volume Ratio | 140.79 oz-in/in³ |
| Speed-to-Weight | 0.08097 (1/sec·g) |
| Speed-Torque Trade-off | 47.50 |
| Current-per-Torque Ratio | 0.0168 A/oz-in |
| Idle-to-Running Current Ratio | 0.041 |
| No-Load vs Stall Current Spread | 19.09 |
| Voltage Range Width | 4.9 V Wider voltage range than 97% of 1560 Digital Standard servos |
| Backlash-to-Range Ratio | 0.00278 Tighter backlash than 69% of 52 Digital Standard servos |
| Dead-Band-to-Pulse-Width Ratio | 0.0017 Finer dead band than 46% of 504 Digital Standard servos |
Similar Active Servos
Reviews (8)
Includes 4 reviews aggregated from around the web.
Often recommended on forums, and users praise its strength and durability in 1/8 buggies, large aircraft and heavy-duty use. Downsides are the high price, speed that some call slow, and mixed experiences from a few owners.
-
Mike 551
March 14, 2017Application(s): 70cc Gas Airplane. All surfaces and throttle.
Comments: This is the overall best servo for the $90 price range. It will tolerate 7.4 volts well and it is extremely quick and at 330 oz.in., it will handle any 50-70cc plane. The ability to program center, end points and dead band makes set-up and adjustments so much easier. I have used MKS777 and find these comparable if not better. Titanium does not develop "slop" around center which is great for 3D throttle use. If you have not used a programmable servo, you don't know what you are missing.
Hyatt Crawler
July 19, 2015Application(s): Axial AX10 Rock Crawler
Comments: This Servo is fantastic, and works well with my Lipo 7.4. Never binds up in tough spots.
RYAN
January 1, 2015Application(s): steering servo for my losi buggy
Comments: for me this servo is never slow....just perfect for my preference...just wonder if i can use 7.4v lipo rx batt on it?????
Klausen
September 29, 2012Application(s): Various E-maxx builds and MBX6T RC-Monster conversion
Comments: Great servo for 1 servo set up in an E-maxx. Works very well for this size monstertruck.
Also great for a 1/8 truggy, but maybe a bit too slow, if you want to race it.