XQ-Power XQ-S2221F

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*Based on known specs.

Technical Specifications

Last Updated: 2026-10-25

Identity
Brand
Product Number	XQ-S2221F
Category	Hobby
Performance
Torque	8.4V 305.00 oz-in 7.4V 249.00 oz-in 6.0V 208.00 oz-in Top 10%
Speed	8.4V 0.14 sec/60° 7.4V 0.12 sec/60° 6.0V 0.14 sec/60° Average
Physical
Weight	1.29 ozBottom 10%
Dimensions	L 0.472 in W 1.181 in H 1.398 in
Case Material	Aluminum
Drivetrain
Motor Type	Coreless
Gears	Stainless Steel
Gear Spline/Teeth	25 T
Rotation/Support	Dual Bearings
Control & Signal
Modulation	Digital
Control System	PWM
Electrical & Environment
Operating Voltage	6–8.4 V
Water Rating	Splashproof
Connectivity
Connector	JR (Universal) estimate

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Compatible Hardware

Amazon eBay

*Based on known specs.

Class Comparison

Torque	Top 10% Stronger than 97% of 40 Digital Slim servos at 6.0V
Speed	Average Faster than 63% of 41 Digital Slim servos at 6.0V
Weight	Bottom 10% Lighter than 1% of 83 Digital Slim servos

Performance Analysis

Shaft Power	2.75–4.03 W
Power Density	5.169 W/in³ More power-dense than 76% of 83 Digital Slim servos
Torque Density	5.6986 oz-in/g 4th-highest torque density of 40 Digital Slim servos
Torque-to-Volume Ratio	266.91 oz-in/in³ 3rd-highest torque-to-volume ratio of 40 Digital Slim servos
Speed-to-Weight	0.19570 (1/sec·g) Faster than 5% of 41 Digital Slim servos
Speed-Torque Trade-off	29.12 2nd-highest speed-torque trade-off of 40 Digital Slim servos
Torque Gain per Volt	19.43%/V More voltage-responsive (torque) than 81% of 33 Digital Slim servos
Speed Gain per Volt	0.00%/V More voltage-responsive (speed) than 0% of 34 Digital Slim servos
Voltage Range Width	2.4 V Wider voltage range than 39% of 75 Digital Slim servos