TowerPro MG938

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*Based on known specs.

Technical Specifications

Last Updated: 2026-10-23

Identity
Brand
Product Number	81MG938
Category	Hobby
Performance
Torque	6.1V 51.38 oz-in 4.8V 40.27 oz-in Below Average
Speed	6.0V 0.09 sec/60° 4.8V 0.11 sec/60° Average
Physical
Weight	1.02 ozBelow Average
Dimensions	L 1.343 in W 0.60 in H 1.17 in
Drivetrain
Motor Type	Coreless
Gears	Metal
Rotation/Support	Dual Bearings
Control & Signal
Modulation	Digital
Dead Band	1 µs
Electrical & Environment
Operating Voltage	4.8–6 V
Power Source	External
Temperature	0–55 °C
Idle Current	0.010 A
Connectivity
Connector	JR (Universal)
Wire Length	320 mm

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*Based on known specs.

Class Comparison

Torque	Below Average Stronger than 23% of 290 Digital Mini servos at 4.8V
Speed	Average Faster than 55% of 293 Digital Mini servos at 4.8V
Weight	Below Average Lighter than 30% of 505 Digital Mini servos

Performance Analysis

Shaft Power	0.68 W
Power Density	0.718 W/in³ More power-dense than 6% of 482 Digital Mini servos
Torque Density	1.3886 oz-in/g Stronger than 14% of 286 Digital Mini servos
Torque-to-Volume Ratio	42.73 oz-in/in³ Denser torque than 14% of 288 Digital Mini servos
Speed-to-Weight	0.31348 (1/sec·g) Faster than 47% of 289 Digital Mini servos
Speed-Torque Trade-off	4.43 Better balanced than 25% of 288 Digital Mini servos
Speed Gain per Volt	18.52%/V More voltage-responsive (speed) than 62% of 262 Digital Mini servos
Voltage Range Width	1.2 V Wider voltage range than 15% of 405 Digital Mini servos