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SunFounder SF3218MG
Robotics

SunFounder SF3218MG

Compatible Hardware

*Based on known specs.

Technical Specifications

Last Updated: 2026-07-28
Identity
Brand SunFounder
Product Number CN0193
Category Robotics
Performance
Torque
7.2V 317.00 oz-in
4.8V 285.00 oz-in Above Average
Speed
7.2V 0.14 sec/60°
4.8V 0.18 sec/60° Below Average
Stall Current 2.1–2.7 AAbove Average
Physical
Weight 1.98 ozAbove Average
Shape Boxed
Dimensions L 1.58 in
W 0.79 in
H 1.60 in
Case Material Aluminum
Drivetrain
Motor Type Brushed
Gears Metal
Gear Spline/Teeth 25 T
Rotation/Support Dual Bearings
Control & Signal
Modulation Digital
Direction Counterclockwise
Rotational Range 270°
Pulse Width 500-2500 µs
Neutral Position 1500 µs
Angle Sensor Potentiometer
Control System PWM
Programmable Yes
Electrical & Environment
Operating Voltage 4.8–7.2 V
Temperature -25–70 °C
Water Rating None
Connectivity
Connector JR (Universal) estimate
Wire Length 320 mm

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

TorqueAbove Average
Stronger than 67% of 856 Digital Standard servos at 4.8V
SpeedBelow Average
Faster than 18% of 844 Digital Standard servos at 4.8V
WeightAbove Average
Lighter than 70% of 1822 Digital Standard servos
Stall CurrentAbove Average
Lower draw than 68% of 408 Digital Standard servos

Performance Analysis

Shaft Power 2.93–4.19 W
Power Density2.096 W/in³
More power-dense than 47% of 1648 Digital Standard servos
Torque Density5.0893 oz-in/g
Stronger than 78% of 845 Digital Standard servos
Torque-to-Volume Ratio142.71 oz-in/in³
Denser torque than 63% of 855 Digital Standard servos
Speed-to-Weight0.09921 (1/sec·g)
Faster than 32% of 834 Digital Standard servos
Speed-Torque Trade-off51.31
Better balanced than 78% of 839 Digital Standard servos
Current-per-Torque Ratio0.0095 A/oz-in
More efficient than 81% of 237 Digital Standard servos
Torque Gain per Volt4.68%/V
More voltage-responsive (torque) than 3% of 681 Digital Standard servos
Speed Gain per Volt11.91%/V
More voltage-responsive (speed) than 31% of 695 Digital Standard servos
Voltage Range Width2.4 V
Wider voltage range than 48% of 1286 Digital Standard servos

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