KST A15-1812

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Technical Specifications

Last Updated: 2026-10-22

Identity
Brand
Product Number	KST-A15-1812
Category	Hobby
Performance
Torque	7.4V254.88 oz-in
Speed	7.4V0.12 sec/60°
Running Current	7.4V0.920 A
Stall Current	≤2.85 ABelow Average
Physical
Weight	1.48 ozBottom 10%
Dimensions	L 1.398 in W 0.591 in H 1.28 in
Case Material	Aluminum
Drivetrain
Motor Type	Brushless
Gears	Steel
Gear Spline/Teeth	25 T
Rotation/Support	Dual Bearings
Control & Signal
Modulation	Digital
Rotational Range	200°
Mechanical Limit	200°
Pulse Width	500-2500 µs
Neutral Position	1500 µs
Refresh Rate	333 Hz
Angle Sensor	Potentiometer
Control System	PWM
Programmable	Yes
Signal Voltage	3.3–5V
Electrical & Environment
Operating Voltage	6–8.4 V
Temperature	-20–65 °C
Connectivity
Connector	JR (Universal) estimate

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*Based on known specs.

Class Comparison

Weight	Bottom 10% Lighter than 7% of 505 Digital Mini servos
Stall Current	Below Average Lower draw than 20% of 94 Digital Mini servos

Performance Analysis

Shaft Power	3.93 W
Power Density	3.714 W/in³ More power-dense than 77% of 482 Digital Mini servos
Torque Density	6.0686 oz-in/g
Torque-to-Volume Ratio	241.01 oz-in/in³
Speed-to-Weight	0.19841 (1/sec·g)
Speed-Torque Trade-off	30.59
Current-per-Torque Ratio	0.0112 A/oz-in
No-Load vs Stall Current Spread	3.10
Voltage Range Width	2.4 V Wider voltage range than 55% of 405 Digital Mini servos