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KST X15-855X
Standard

KST X15-855X

Compatible Hardware

*Spec is estimated from brand data.

Technical Specifications

Last Updated: 2026-07-28
Identity
Brand KST
Product Number (add)
Category Hobby
Performance
Torque
8.4V 208.20 oz-in
7.4V 180.44 oz-in
6.0V 138.80 oz-in
Speed
8.4V 0.05 sec/60°
7.4V 0.06 sec/60°
6.0V 0.07 sec/60°
Running Current (add)
Stall Current (add)
Physical
Weight 1.59 oz
Dimensions L 1.40 in
W 0.59 in
H 1.40 in
Case Material (add)
Drivetrain
Motor Type Brushless
Motor Drive (add)
Gears Steel
Gear Spline/Teeth 25 T estimate
Shaft Size (add)
Rotation Mode (add)
Rotation/Support Dual Bearings
Backlash (add)
Control & Signal
Modulation Digital
Direction (add)
Rotational Range (add)
Mechanical Limit (add)
Pulse Cycle (add)
Pulse Width (add)
Neutral Position 760 µs
Dead Band (add)
Refresh Rate (add)
Angle Sensor (add)
Control System PWM
Programmable (add)
Signal Voltage (add)
Electrical & Environment
Operating Voltage 6–8.4 V
Power Source (add)
Regulator Type (add)
Temperature (add)
Water Rating (add)
Certification (add)
Idle Current (add)
Connectivity
Connector JR (Universal) estimate
Wire Length (add)
Origin
Country of Origin (add)

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.

Performance Analysis

Shaft Power 3.67–7.70 W
Torque Density3.0844 oz-in/g
Stronger than 47% of the 831 Digital Standard servos in the database
Torque-to-Volume Ratio120.32 oz-in/in³
Denser torque than 53% of the 842 Digital Standard servos in the database
Power Density6.674 W/in³
More power-dense than 89% of the 1643 Digital Standard servos in the database
Speed-to-Weight0.31746 (1/sec·g)
Faster than 95% of the 820 Digital Standard servos in the database
Speed-Torque Trade-off9.72
Better balanced than 16% of the 825 Digital Standard servos in the database
Torque Gain per Volt20.83%/V
More voltage-responsive (torque) than 84% of the 672 Digital Standard servos in the database
Speed Gain per Volt16.67%/V
More voltage-responsive (speed) than 59% of the 686 Digital Standard servos in the database
Voltage Range Width2.4 V
Wider voltage range than 56% of the 1268 Digital Standard servos in the database

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