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Technical Specifications
Last Updated: 2026-09-13
|
Identity
Performance
Physical
Drivetrain
Control & Signal
Electrical & Environment
Connectivity
Origin
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Weight
Dimensions
Torque
Speed
Current
Temp
Wire
| Identity | |
| Brand |  |
| Product Number | 31303S |
| Category | Hobby |
| Discontinued | Yes |
| Performance | |
| Torque |
6.0V
51.38 oz-in
3.70 kg-cm
0.4 N-m
4.8V
41.66 oz-in
3.00 kg-cm
0.3 N-m
|
| Speed |
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 |
4.8V0.150 A150 mA |
| Stall Current | (add) |
| Physical | |
| Weight | 1.71 oz48.5 g |
| Dimensions |
L 1.57 in W 0.78 in H 1.43 in L 39.9 mm W 19.8 mm H 36.3 mm |
| Case Material | Plastic |
| Drivetrain | |
| Motor Type | 3-pole |
| Motor Drive | (add) |
| Gears | Plastic |
| Gear Spline/Teeth | 24 T |
| Shaft Size | (add) |
| Rotation Mode | Positional |
| Rotation/Support | Bushing |
| Backlash | (add) |
| Control & Signal | |
| Modulation | Analog |
| Direction | Clockwise |
| Rotational Range | 90° |
| Mechanical Limit | 135° |
| Pulse Cycle | 20 ms |
| Pulse Width | 900-2100 µs |
| Neutral Position | 1500 µs |
| Dead Band | 8 µs |
| Refresh Rate | 50 Hz |
| Angle Sensor | Potentiometer |
| Control System | PWM |
| Programmable | No |
| 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 | (add) |
| Certification | (add) |
| Idle Current | 0.008 A8 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 | 0.41–0.63 W |
| Torque Density | 0.8590 oz-in/g Stronger than 5% of the 156 Analog Standard servos in the database |
| Torque-to-Volume Ratio | 23.79 oz-in/in³ Denser torque than 16% of the 156 Analog Standard servos in the database |
| Power Density | 0.362 W/in³ More power-dense than 25% of the 421 Analog Standard servos in the database |
| Speed-to-Weight | 0.10852 (1/sec·g) Faster than 42% of the 155 Analog Standard servos in the database |
| Speed-Torque Trade-off | 7.92 Better balanced than 12% of the 155 Analog Standard servos in the database |
| Idle-to-Running Current Ratio | 0.053 Lower idle draw than 52% of the 34 Standard servos in the database |
| Torque Gain per Volt | 19.44%/V More voltage-responsive (torque) than 71% of the 120 Analog Standard servos in the database |
| Speed Gain per Volt | 22.22%/V More voltage-responsive (speed) than 88% of the 121 Analog Standard servos in the database |
| Voltage Range Width | 1.2 V Wider voltage range than 64% of the 185 Analog Standard servos in the database |
| Dead-Band-to-Pulse-Width Ratio | 0.0067 Finer dead band than 17% of the 37 Analog Standard servos in the database |
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Reviews (1)
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RcDesigner
May 22, 2011Application(s): RC robot
Comments: Awesome torque, speed is decent, I did a 360 degree mod on this and it works perfectly!