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JR ES539
Standard Discontinued

JR ES539

Compatible Hardware

*Spec is estimated from brand data.

Technical Specifications

Last Updated: 2026-09-13
Identity
Brand JR
Product Number JRPS539
Category Hobby
Discontinued Yes
Performance
Torque
4.8V70.82 oz-inAverage
Speed
4.8V0.23 sec/60°Below Average
Physical
Weight 1.34 ozAbove Average
Dimensions L 1.28 in
W 0.75 in
H 1.52 in
Drivetrain
Motor Type Brushed
Gears Plastic
Gear Spline/Teeth 23 T estimate
Rotation/Support Single Bearing
Control & Signal
Modulation Analog
Electrical & Environment
Operating Voltage 4.8–4.8 V
Connectivity
Connector JR (Universal)

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.

Class Comparison

TorqueAverage
Stronger than 45% of 192 Analog Standard servos at 4.8V
SpeedBelow Average
Faster than 13% of 190 Analog Standard servos at 4.8V
WeightAbove Average
Lighter than 88% of 448 Analog Standard servos

Performance Analysis

Shaft Power 0.57 W
Power Density0.390 W/in³
More power-dense than 28% of 437 Analog Standard servos
Torque Density1.8637 oz-in/g
Stronger than 57% of 192 Analog Standard servos
Torque-to-Volume Ratio48.53 oz-in/in³
Denser torque than 56% of 192 Analog Standard servos
Speed-to-Weight0.11442 (1/sec·g)
Faster than 51% of 190 Analog Standard servos
Speed-Torque Trade-off16.29
Better balanced than 61% of 190 Analog Standard servos
Voltage Range Width0.0 V
Wider voltage range than 1% of 229 Analog Standard servos

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