SpringRC SR-401P

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*Based on known specs.

Technical Specifications

Last Updated: 2026-10-10

Identity
Brand
Product Number	SR401P
Category	Robotics
Performance
Torque	7.4V 57.80 oz-in 6.0V 52.80 oz-in Below Average
Speed	7.4V 0.16 sec/60° 6.0V 0.18 sec/60° Average
Physical
Weight	1.55 ozAbove Average
Shape	Boxed
Dimensions	L 1.583 in W 0.803 in H 1.634 in
Drivetrain
Gears	Plastic
Gear Spline/Teeth	25 T
Rotation Mode	Positional
Rotation/Support	Single Bearing
Control & Signal
Modulation	Analog
Rotational Range	180°
Neutral Position	1500 µs
Control System	PWM
Electrical & Environment
Operating Voltage	6–7.4 V
Connectivity
Wire Length	300 mm
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

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*Based on known specs.

Class Comparison

Torque	Below Average Stronger than 32% of 192 Analog Standard servos at 6.0V
Speed	Average Faster than 57% of 190 Analog Standard servos at 6.0V
Weight	Above Average Lighter than 70% of 448 Analog Standard servos

Performance Analysis

Shaft Power	0.54–0.67 W
Power Density	0.322 W/in³ More power-dense than 19% of 437 Analog Standard servos
Torque Density	1.2000 oz-in/g Stronger than 29% of 192 Analog Standard servos
Torque-to-Volume Ratio	25.42 oz-in/in³ Denser torque than 24% of 192 Analog Standard servos
Speed-to-Weight	0.12626 (1/sec·g) Faster than 67% of 190 Analog Standard servos
Speed-Torque Trade-off	9.50 Better balanced than 30% of 190 Analog Standard servos
Torque Gain per Volt	6.76%/V More voltage-responsive (torque) than 8% of 145 Analog Standard servos
Speed Gain per Volt	8.94%/V More voltage-responsive (speed) than 5% of 147 Analog Standard servos
Voltage Range Width	1.4 V Wider voltage range than 87% of 229 Analog Standard servos