XQ-Power XQ-RS420

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Technical Specifications

Last Updated: 2026-10-25

Identity
Brand
Product Number	RS-420
Category	Robotics
Discontinued	Yes
Performance
Torque	6.0V 284.70 oz-in 4.8V 238.90 oz-in Average
Speed	7.2V 0.13 sec/60° 6.0V 0.15 sec/60°
Running Current	6.0V 0.210 A 4.8V 0.180 A Average
Stall Current	2.2–2.5 AAbove Average
Physical
Weight	2.03 ozAbove Average
Shape	Boxed
Dimensions	L 1.583 in W 0.791 in H 1.528 in
Case Material	Plastic / Aluminum
Drivetrain
Motor Type	Coreless
Gears	Titanium
Gear Spline/Teeth	25 T
Rotation Mode	Positional
Rotation/Support	Dual Bearings
Control & Signal
Modulation	Digital
Direction	Counterclockwise
Rotational Range	180°
Pulse Width	500-2500 µs
Neutral Position	1500 µs
Dead Band	2 µs
Control System	PWM
Electrical & Environment
Operating Voltage	4.8–6 V
Temperature	-15–60 °C
Water Rating	Splashproof
Idle Current	0.006 A
Connectivity
Connector	JR (Universal)
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.

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*Based on known specs.

Class Comparison

Torque	Average Stronger than 55% of 1055 Digital Standard servos at 4.8V
Weight	Above Average Lighter than 68% of 1872 Digital Standard servos
Running Current	Average Lower draw than 63% of 226 Digital Standard servos at 4.8V
Stall Current	Above Average Lower draw than 79% of 569 Digital Standard servos

Performance Analysis

Shaft Power	3.51 W
Power Density	1.834 W/in³ More power-dense than 40% of 1762 Digital Standard servos
Torque Density	4.1548 oz-in/g Stronger than 64% of 1048 Digital Standard servos
Torque-to-Volume Ratio	124.86 oz-in/in³ Denser torque than 54% of 1053 Digital Standard servos
Speed-to-Weight	0.11594 (1/sec·g)
Speed-Torque Trade-off	35.84
Current-per-Torque Ratio	0.0105 A/oz-in More efficient than 77% of 330 Digital Standard servos
Idle-to-Running Current Ratio	0.033 Lower idle draw than 70% of 167 Digital Standard servos
No-Load vs Stall Current Spread	13.89 Narrower current spread than 66% of 179 Digital Standard servos
Torque Gain per Volt	15.98%/V More voltage-responsive (torque) than 52% of 868 Digital Standard servos
Voltage Range Width	1.2 V Wider voltage range than 16% of 1552 Digital Standard servos
Dead-Band-to-Pulse-Width Ratio	0.0010 Finer dead band than 83% of 501 Digital Standard servos