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JR ST47
Standard Discontinued

JR ST47

Compatible Hardware

*Based on known specs.

Technical Specifications

Last Updated: 2026-09-16
Identity
Brand JR
Product Number JSP20050
Category Hobby
Discontinued Yes
Performance
Torque
4.8V47.00 oz-inBelow Average
Speed
6.0V 0.19 sec/60°
4.8V 0.24 sec/60° Bottom 10%
Physical
Weight 1.55 ozAbove Average
Dimensions L 1.52 in
W 0.73 in
H 1.32 in
Drivetrain
Motor Type 3-pole
Gears Plastic
Rotation Mode Positional
Rotation/Support Bushing
Control & Signal
Modulation Analog
Electrical & Environment
Operating Voltage 4.8–6 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

TorqueBelow Average
Stronger than 27% of 192 Analog Standard servos at 4.8V
SpeedBottom 10%
Faster than 8% of 190 Analog Standard servos at 4.8V
WeightAbove Average
Lighter than 70% of 448 Analog Standard servos

Performance Analysis

Shaft Power 0.36 W
Power Density0.247 W/in³
More power-dense than 8% of 437 Analog Standard servos
Torque Density1.0696 oz-in/g
Stronger than 19% of 192 Analog Standard servos
Torque-to-Volume Ratio32.09 oz-in/in³
Denser torque than 36% of 192 Analog Standard servos
Speed-to-Weight0.09483 (1/sec·g)
Faster than 17% of 190 Analog Standard servos
Speed-Torque Trade-off11.28
Better balanced than 40% of 190 Analog Standard servos
Speed Gain per Volt21.93%/V
More voltage-responsive (speed) than 82% of 147 Analog Standard servos
Voltage Range Width1.2 V
Wider voltage range than 53% of 229 Analog Standard servos

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