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JR S89HR
Standard

JR S89HR

Compatible Hardware

*Based on known specs.

Technical Specifications

Last Updated: 2026-07-10
Identity
Brand JR
Category Hobby
Performance
Torque
8.4V 85.10 oz-in
7.4V 74.90 oz-in
6.6V 65.80 oz-in
Speed
8.4V 0.03 sec/60°
7.4V 0.03 sec/60°
6.6V 0.04 sec/60°
Physical
Weight 2.25 ozAverage
Dimensions L 1.575 in
W 0.787 in
H 1.594 in
Drivetrain
Motor Type Brushless
Gears Steel
Rotation/Support Dual Bearings
Control & Signal
Modulation Digital
Rotational Range 180°
Neutral Position 760 µs
Control System PWM
Electrical & Environment
Operating Voltage 4.5–8.5 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

WeightAverage
Lighter than 45% of 1822 Digital Standard servos

Performance Analysis

Shaft Power 3.04–5.25 W
Power Density2.655 W/in³
More power-dense than 55% of 1648 Digital Standard servos
Torque Density1.0314 oz-in/g
Torque-to-Volume Ratio33.30 oz-in/in³
Speed-to-Weight0.39185 (1/sec·g)
Speed-Torque Trade-off2.63
Voltage Range Width4.0 V
Wider voltage range than 94% of 1286 Digital Standard servos

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