Corona CS939MG

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*Based on known specs.

Technical Specifications

Last Updated: 2026-10-22

Identity
Brand
Product Number	CS939MG
Category	Hobby
Performance
Torque	6.0V 37.50 oz-in 4.8V 34.73 oz-in Top 10%
Speed	6.0V 0.13 sec/60° 4.8V 0.14 sec/60° Below Average
Physical
Weight	0.44 ozBelow Average
Dimensions	L 0.886 in W 0.453 in H 0.969 in
Drivetrain
Motor Type	Coreless
Gears	Metal
Gear Spline/Teeth	21 T
Rotation/Support	Single Bearing
Control & Signal
Modulation	Analog
Rotational Range	80°
Dead Band	5 µs
Control System	PWM
Electrical & Environment
Operating Voltage	4.8–6 V
Temperature	-20–60 °C
Connectivity
Connector	JR (Universal) estimate
Wire Length	215 mm

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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.

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*Based on known specs.

Class Comparison

Torque	Top 10% Stronger than 97% of 160 Analog Micro servos at 4.8V
Speed	Below Average Faster than 21% of 160 Analog Micro servos at 4.8V
Weight	Below Average Lighter than 17% of 336 Analog Micro servos

Performance Analysis

Shaft Power	0.46–0.53 W
Power Density	1.373 W/in³ More power-dense than 88% of 322 Analog Micro servos
Torque Density	2.7784 oz-in/g Stronger than 94% of 160 Analog Micro servos
Torque-to-Volume Ratio	89.41 oz-in/in³ 2nd-highest torque-to-volume ratio of 160 Analog Micro servos
Speed-to-Weight	0.57143 (1/sec·g) Faster than 18% of 160 Analog Micro servos
Speed-Torque Trade-off	4.86 Better balanced than 94% of 159 Analog Micro servos
Torque Gain per Volt	6.65%/V More voltage-responsive (torque) than 5% of 101 Analog Micro servos
Speed Gain per Volt	6.40%/V More voltage-responsive (speed) than 0% of 101 Analog Micro servos
Voltage Range Width	1.2 V Wider voltage range than 25% of 174 Analog Micro servos