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JR S8911BL2K
Standard

JR S8911BL2K

Compatible Hardware

*Based on known specs.

Technical Specifications

Last Updated: 2026-10-09
Identity
Brand JR
Product Number T0077657
Category Hobby
Performance
Torque
8.4V 914.30 oz-in
7.4V 805.40 oz-in
6.6V 718.40 oz-in
4.8V 522.40 oz-in
Speed
8.4V 0.11 sec/60°
7.4V 0.13 sec/60°
6.6V 0.15 sec/60°
4.8V 0.20 sec/60°
Physical
Weight 2.79 ozBelow Average
Dimensions L 1.378 in
W 0.787 in
H 1.594 in
Case Material Aluminum
Drivetrain
Motor Type Brushless
Gears Steel
Rotation Mode Positional
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 13% of 1902 Digital Standard servos

Performance Analysis

Shaft Power 4.83–15.37 W
Power Density8.890 W/in³
More power-dense than 96% of 1759 Digital Standard servos
Torque Density6.6127 oz-in/g
Torque-to-Volume Ratio302.20 oz-in/in³
Speed-to-Weight0.06329 (1/sec·g)
Speed-Torque Trade-off104.48
Voltage Range Width4.0 V
Wider voltage range than 94% of 1539 Digital Standard servos

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