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Technical Specifications
Last Updated: 2026-10-21| Identity | |
| Brand |  |
| Product Number | SM-S4315M |
| Category | Hobby |
| Performance | |
| Torque |
6.0V
209.70 oz-in
15.10 kg-cm
1.5 N-m
4.8V
180.50 oz-in
13.00 kg-cm
1.3 N-m
Top 10%
|
| Speed |
6.0V
0.17 sec/60°
352.9 deg/s
58.8 RPM
4.8V
0.21 sec/60°
285.7 deg/s
47.6 RPM
Below Average
|
| Physical | |
| Weight | 2.12 oz60.0 gBelow Average |
| Dimensions |
L 1.626 in W 0.807 in H 1.575 in L 41.3 mm W 20.5 mm H 40.0 mm |
| Drivetrain | |
| Motor Type | Brushed |
| Gears | Metal |
| Rotation Mode | Positional |
| Rotation/Support | Dual Bearings |
| Control & Signal | |
| Modulation | Analog |
| Rotational Range | 120° |
| Neutral Position | 1500 µs |
| Control System | PWM |
| Electrical & Environment | |
| Operating Voltage | 4.8–6 V |
| Connectivity | |
| Connector | JR (Universal) |
| Wire Length | 300 mm11.81 in |
| Origin | |
| Country of Origin | China |
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 | Top 10% Stronger than 91% of 198 Analog Standard servos at 4.8V |
| Speed | Below Average Faster than 24% of 195 Analog Standard servos at 4.8V |
| Weight | Below Average Lighter than 12% of 447 Analog Standard servos |
Performance Analysis
| Shaft Power | 1.59–2.28 W |
| Power Density | 1.104 W/in³ More power-dense than 85% of 432 Analog Standard servos |
| Torque Density | 3.0083 oz-in/g Stronger than 89% of 198 Analog Standard servos |
| Torque-to-Volume Ratio | 87.34 oz-in/in³ Denser torque than 89% of 198 Analog Standard servos |
| Speed-to-Weight | 0.07937 (1/sec·g) Faster than 12% of 195 Analog Standard servos |
| Speed-Torque Trade-off | 37.91 Better balanced than 94% of 195 Analog Standard servos |
| Torque Gain per Volt | 13.48%/V More voltage-responsive (torque) than 45% of 156 Analog Standard servos |
| Speed Gain per Volt | 19.60%/V More voltage-responsive (speed) than 74% of 156 Analog Standard servos |
| Voltage Range Width | 1.2 V Wider voltage range than 35% of 239 Analog Standard servos |
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Reviews (3)
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drunkmagus
April 21, 2014Application(s): Rock crawler (kyosho rock force)
Comments: Very affordable, water proof, metal gear and high torque. Very happy with servo had no problems with it in my crawler.
James
February 19, 2014Application(s): Steering and Tilt
Comments: I've purchased a bunch of these from eBay and they are super servos! Much stronger than anything else in their price range, very quiet and VERY strong! I use four of them in my custom 4ws Summit, and they fit the chassis perfectly. I also use one to tilt my camera on my FPV build. I put a FIVE POUND dumbell on the tilt and it was able to tilt it easily AND maintain it without drooping, then return to center! It's INCREDIBLE and certainly worth the cash, beats out other servos 5-8x its price handsdown! :)
sideshowbob
January 27, 2012Application(s): crawler steering servo losi comp crawler lcc
Comments: not the best centering under load or the fastest but if it had any more power it would snap the c knuckles . i used this to replace a tired hitec 645mg , i would say this has more power but the hitec was 7kg and this is 16kg but i dont see a huge improvement so i think 16kg is a bit over exaggerated unless its limited by the bec of my speed passion esc
overall nothing else is this powerful for the cost
regards
bob
aka sideshowbob