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JR S8955SS-BB
Unknown

JR S8955SS-BB

Compatible Hardware

*Based on known specs.

Technical Specifications

Last Updated: 2026-10-24
Identity
Brand JR
Product Number T0078969-2
Category Hobby
Performance
Torque
8.4V 604.10 oz-in
7.4V 532.20 oz-in
6.6V 474.70 oz-in
Speed
8.4V 0.05 sec/60°
7.4V 0.06 sec/60°
6.6V 0.06 sec/60°
Physical
Weight 3.02 ozBelow Average
Dimensions L 1.575 in
W 0.787 in
H 1.673 in
Case Material Metal
Drivetrain
Motor Type Brushless
Gears Steel
Rotation/Support Dual Bearings
Control & Signal
Modulation Digital
Rotational Range 180°
Control System PWM
Programmable Yes
Electrical & Environment
Operating Voltage 4.5–8.5 V
Connectivity
Connector JR (Universal)
Wire Length 300 mm

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

WeightBelow Average
Lighter than 14% of 65 Digital Unknown servos

Performance Analysis

Shaft Power 14.63–22.34 W
Power Density10.773 W/in³
4th-highest power density of 28 Digital Unknown servos
Torque Density5.5521 oz-in/g
Torque-to-Volume Ratio228.91 oz-in/in³
Speed-to-Weight0.19493 (1/sec·g)
Speed-Torque Trade-off28.48
Voltage Range Width4.0 V
Wider voltage range than 62% of 35 Digital Unknown servos

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