SpringRC SM-S4481M

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*Based on known specs.

Technical Specifications

Last Updated: 2026-10-23

Identity
Brand
Product Number	SM-S4481M
Category	Hobby
Discontinued	Yes
Performance
Torque	6.0V 177.76 oz-in 4.8V 155.54 oz-in Below Average
Speed	6.0V 0.11 sec/60° 4.8V 0.13 sec/60° Average
Physical
Weight	2.22 ozAverage
Dimensions	L 1.587 in W 0.795 in H 1.465 in
Drivetrain
Motor Type	Coreless
Gears	Metal
Rotation/Support	Dual Bearings
Control & Signal
Modulation	Digital
Rotational Range	120°
Control System	PWM
Electrical & Environment
Operating Voltage	4.8–6 V
Connectivity
Wire Length	300 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.

Compatible Hardware

Amazon eBay

*Based on known specs.

Class Comparison

Torque	Below Average Stronger than 33% of 1060 Digital Standard servos at 4.8V
Speed	Average Faster than 59% of 1045 Digital Standard servos at 4.8V
Weight	Average Lighter than 50% of 1880 Digital Standard servos

Performance Analysis

Shaft Power	2.21–2.99 W
Power Density	1.617 W/in³ More power-dense than 35% of 1768 Digital Standard servos
Torque Density	2.4689 oz-in/g Stronger than 31% of 1053 Digital Standard servos
Torque-to-Volume Ratio	84.15 oz-in/in³ Denser torque than 34% of 1058 Digital Standard servos
Speed-to-Weight	0.12210 (1/sec·g) Faster than 56% of 1038 Digital Standard servos
Speed-Torque Trade-off	20.22 Better balanced than 36% of 1034 Digital Standard servos
Torque Gain per Volt	11.90%/V More voltage-responsive (torque) than 28% of 873 Digital Standard servos
Speed Gain per Volt	15.17%/V More voltage-responsive (speed) than 48% of 874 Digital Standard servos
Voltage Range Width	1.2 V Wider voltage range than 17% of 1560 Digital Standard servos