Unitree YS-342026-J288

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Technical Specifications

Last Updated: 2026-10-09

Identity
Brand
Product Number	YS-342026-J288
Category	Robotics
Performance
Torque	25.2V212.42 oz-in
Speed	25.2V 0.03 sec/60° 12.0V 0.06 sec/60°
Running Current	25.2V 0.450 A 12.0V 0.270 A
Stall Current	≤1.92 AAbove Average
Rated Output Power	52.5 W
Physical
Weight	1.38 ozTop 10%
Shape	Boxed
Dimensions	L 1.339 in W 0.787 in H 1.024 in
Case Material	Aluminum
Drivetrain
Motor Type	Brushless
Motor Drive	FET
Gears	Steel
Gear Ratio	288.35:1
Shaft Size	14.0 mm
Rotation Mode	Continuous
Control & Signal
Modulation	Digital
Angle Sensor	Absolute Encoder
Control System	Serial
Programmable	Yes
Resolution	32,768 pulse/rev
Operating Modes	Position, Velocity, Torque, Impedance
Electrical & Environment
Operating Voltage	6.4–25.2 V
Temperature	-20–90 °C
Idle Current	26.000 A
Connectivity
Baud Rate	6 Mbps

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*Based on known specs.

Class Comparison

Weight	Top 10% Lighter than 96% of 1902 Digital Standard servos
Stall Current	Above Average Lower draw than 88% of 539 Digital Standard servos

Performance Analysis

Torque Density	5.4467 oz-in/g
Torque-to-Volume Ratio	196.85 oz-in/in³
Speed-to-Weight	0.40700 (1/sec·g)
Speed-Torque Trade-off	13.38
Current-per-Torque Ratio	0.0090 A/oz-in
Idle-to-Running Current Ratio	96.296
No-Load vs Stall Current Spread	7.11
Voltage Range Width	18.8 V 1st-highest voltage range width of 1539 Digital Standard servos

Notes

High-speed brushless motor with metal gears and aluminum alloy shell. Features dual absolute value encoders (rotor and output end). Supports hybrid control modes (torque, angle, velocity, stiffness, damping) via 6Mbps TTL serial bus.