Emax ES3003

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Technical Specifications

Last Updated: 2026-10-23

Identity
Brand
Product Number	ES3003
Category	Hobby
Performance
Torque	6.0V 48.62 oz-in 4.8V 41.67 oz-in Top 10%
Speed	6.0V 0.13 sec/60° 4.8V 0.15 sec/60° Below Average
Physical
Weight	0.60 ozBottom 10%
Dimensions	L 1.12 in W 0.512 in H 1.225 in
Drivetrain
Gears	Nylon
Gear Spline/Teeth	23 T
Rotation Mode	Positional
Rotation/Support	Single Bearing
Control & Signal
Modulation	Analog
Direction	Counterclockwise
Rotational Range	145°
Mechanical Limit	145°
Pulse Width	700-2300 µs
Neutral Position	1700 µs
Control System	PWM
Electrical & Environment
Operating Voltage	4.8–6 V
Connectivity
Connector	Futaba \| JR
Origin
Country of Origin	China

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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.

Compatible Hardware

Amazon eBay

*Based on known specs.

Class Comparison

Torque	Top 10% Stronger than 98% of 176 Analog Micro servos at 4.8V
Speed	Below Average Faster than 14% of 176 Analog Micro servos at 4.8V
Weight	Bottom 10% Lighter than 7% of 372 Analog Micro servos

Performance Analysis

Shaft Power	0.51–0.69 W
Power Density	0.984 W/in³ More power-dense than 64% of 357 Analog Micro servos
Torque Density	2.4512 oz-in/g Stronger than 76% of 176 Analog Micro servos
Torque-to-Volume Ratio	59.32 oz-in/in³ Denser torque than 75% of 176 Analog Micro servos
Speed-to-Weight	0.39216 (1/sec·g) Faster than 8% of 176 Analog Micro servos
Speed-Torque Trade-off	6.25 4th-highest speed-torque trade-off of 175 Analog Micro servos
Torque Gain per Volt	13.90%/V More voltage-responsive (torque) than 40% of 110 Analog Micro servos
Speed Gain per Volt	12.81%/V More voltage-responsive (speed) than 28% of 110 Analog Micro servos
Voltage Range Width	1.2 V Wider voltage range than 23% of 197 Analog Micro servos