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FeeTech FS90R
Robotics

FeeTech FS90R

Compatible Hardware

*Based on known specs.

Technical Specifications

Last Updated: 2026-07-28
Identity
Brand FeeTech
Product Number (add)
Category Robotics
Performance
Torque
4.8V18.10 oz-in
Speed
4.8V0.12 sec/60°
Running Current (add)
Stall Current ≤0.8 A
Rated Output Power (add)
Radial Load (add)
Physical
Weight 0.32 oz
Shape Boxed
Dimensions L 0.89 in
W 0.48 in
H 1.09 in
Case Material Nylon / Fiberglass
Drivetrain
Motor Type Brushed
Motor Drive (add)
Gears Plastic
Gear Ratio (add)
Gear Spline/Teeth 21 T
Shaft Size (add)
Rotation Mode Continuous
Rotation/Support Bushing
Backlash (add)
Control & Signal
Modulation Analog
Direction Counterclockwise
Rotational Range 90°
Mechanical Limit No Limit
Pulse Cycle (add)
Pulse Width 700-2300 µs
Neutral Position 1500 µs
Dead Band (add)
Refresh Rate (add)
Angle Sensor (add)
Control System PWM
Programmable (add)
Resolution (add)
MCU (add)
Operating Modes (add)
Signal Voltage (add)
Electrical & Environment
Operating Voltage 4.8–6 V
Power Source (add)
Regulator Type (add)
Temperature -15–70 °C
Water Rating (add)
Certification (add)
Idle Current 5.000 A
Connectivity
Connector JR (Universal)
Wire Length 250 mm
Baud Rate (add)
Origin
Country of Origin China

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.

Performance Analysis

Shaft Power 0.28 W
Torque Density2.0111 oz-in/g
Stronger than 42% of the 131 Analog Micro servos in the database
Torque-to-Volume Ratio39.34 oz-in/in³
Denser torque than 24% of the 131 Analog Micro servos in the database
Power Density0.606 W/in³
More power-dense than 20% of the 319 Analog Micro servos in the database
Speed-to-Weight0.92593 (1/sec·g)
Faster than 42% of the 130 Analog Micro servos in the database
Speed-Torque Trade-off2.17
Better balanced than 55% of the 130 Analog Micro servos in the database
Current-per-Torque Ratio0.0442 A/oz-in
More efficient than 61% of the 32 Analog Micro servos in the database
Voltage Range Width1.2 V
Wider voltage range than 35% of the 137 Analog Micro servos in the database

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Reviews (1)

  • billboyheritagesurvey

    March 8, 2015

    Application(s): Pan drive for kite aerial photography (KAP) rig

    Comments: This servo is a rare example of a continuous rotation (CR) 360degree servo in the 'micro' format.

    It is lightweight and responds well to direct radio control.

    Under pulse control (e.g. Gentles clickPan Pro) it is very slow and responds in very short steps.

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