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SunFounder SF3218MG
Robotics

SunFounder SF3218MG

Compatible Hardware

*Based on known specs.

Technical Specifications

Last Updated: 2026-10-09
Identity
Brand SunFounder
Product Number CN0193
Category Robotics
Performance
Torque
7.2V 317.00 oz-in
4.8V 285.00 oz-in 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 Mode Positional
Rotation/Support Dual Bearings
Control & Signal
Modulation Digital
Direction Counterclockwise
Rotational Range 270°
Pulse Width 500-2500 µs
Neutral Position 1500 µs
Dead Band 5 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

TorqueAverage
Stronger than 65% of 1043 Digital Standard servos at 4.8V
SpeedBelow Average
Faster than 17% of 1041 Digital Standard servos at 4.8V
WeightAbove Average
Lighter than 71% of 1902 Digital Standard servos
Stall CurrentAbove Average
Lower draw than 69% of 539 Digital Standard servos

Performance Analysis

Shaft Power 2.93–4.19 W
Power Density2.096 W/in³
More power-dense than 46% of 1759 Digital Standard servos
Torque Density5.0893 oz-in/g
Stronger than 78% of 1036 Digital Standard servos
Torque-to-Volume Ratio142.71 oz-in/in³
Denser torque than 61% of 1042 Digital Standard servos
Speed-to-Weight0.09921 (1/sec·g)
Faster than 34% of 1033 Digital Standard servos
Speed-Torque Trade-off51.31
Better balanced than 77% of 1031 Digital Standard servos
Current-per-Torque Ratio0.0095 A/oz-in
More efficient than 81% of 315 Digital Standard servos
Torque Gain per Volt4.68%/V
More voltage-responsive (torque) than 3% of 850 Digital Standard servos
Speed Gain per Volt11.91%/V
More voltage-responsive (speed) than 32% of 871 Digital Standard servos
Voltage Range Width2.4 V
Wider voltage range than 47% of 1539 Digital Standard servos
Dead-Band-to-Pulse-Width Ratio0.0025
Finer dead band than 10% of 468 Digital Standard servos

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