SpringRC SM-S4212M

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*Based on known specs.

Technical Specifications

Last Updated: 2026-10-23

Identity
Brand
Product Number	SM-S4212M
Category	Hobby
Performance
Torque	6.0V 176.20 oz-in 4.8V 163.80 oz-in Below Average
Speed	6.0V 0.13 sec/60° 4.8V 0.15 sec/60° Average
Physical
Weight	2.22 ozAverage
Dimensions	L 1.626 in W 0.807 in H 1.575 in
Drivetrain
Motor Type	Coreless
Gears	Metal
Rotation Mode	Positional
Rotation/Support	Dual Bearings
Control & Signal
Modulation	Digital
Rotational Range	180°
Neutral Position	1500 µs
Control System	PWM
Electrical & Environment
Operating Voltage	4.8–6 V
Connectivity
Connector	JR (Universal)
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	Below Average Stronger than 35% of 1060 Digital Standard servos at 4.8V
Speed	Average Faster than 44% of 1045 Digital Standard servos at 4.8V
Weight	Average Lighter than 50% of 1880 Digital Standard servos

Performance Analysis

Shaft Power	2.02–2.51 W
Power Density	1.213 W/in³ More power-dense than 24% of 1768 Digital Standard servos
Torque Density	2.6000 oz-in/g Stronger than 35% of 1053 Digital Standard servos
Torque-to-Volume Ratio	79.26 oz-in/in³ Denser torque than 32% of 1058 Digital Standard servos
Speed-to-Weight	0.10582 (1/sec·g) Faster than 42% of 1038 Digital Standard servos
Speed-Torque Trade-off	24.57 Better balanced than 44% of 1034 Digital Standard servos
Torque Gain per Volt	6.31%/V More voltage-responsive (torque) than 5% of 873 Digital Standard servos
Speed Gain per Volt	12.81%/V More voltage-responsive (speed) than 34% of 874 Digital Standard servos
Voltage Range Width	1.2 V Wider voltage range than 18% of 1560 Digital Standard servos