KST A20-4515

Search Amazon Search eBay

Compatible Hardware

Amazon eBay

*Spec is estimated from brand data.

Technical Specifications

Last Updated: 2026-10-09

Identity
Brand
Category	Hobby
Performance
Torque	8.4V 694.00 oz-in 7.4V 624.60 oz-in 6.0V 499.68 oz-in Top 10%
Speed	8.4V 0.13 sec/60° 7.4V 0.15 sec/60° 6.0V 0.19 sec/60° Below Average
Physical
Weight	2.82 ozBelow Average
Dimensions	L 1.595 in W 0.787 in H 1.654 in
Drivetrain
Motor Type	Brushless
Gears	Steel
Gear Spline/Teeth	25 T estimate
Rotation/Support	Dual Bearings
Control & Signal
Modulation	Digital
Pulse Cycle	3.003 ms
Refresh Rate	333 Hz
Control System	PWM
Electrical & Environment
Operating Voltage	6–8.4 V
Connectivity
Connector	JR (Universal) estimate

Submit Missing Data Report an Error

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.

Compatible Hardware

Amazon eBay

*Spec is estimated from brand data.

Class Comparison

Torque	Top 10% Stronger than 91% of 1043 Digital Standard servos at 6.0V
Speed	Below Average Faster than 13% of 1041 Digital Standard servos at 6.0V
Weight	Below Average Lighter than 11% of 1902 Digital Standard servos

Performance Analysis

Shaft Power	4.86–9.87 W
Power Density	4.755 W/in³ More power-dense than 76% of 1759 Digital Standard servos
Torque Density	6.2460 oz-in/g Stronger than 89% of 1036 Digital Standard servos
Torque-to-Volume Ratio	240.70 oz-in/in³ Denser torque than 89% of 1042 Digital Standard servos
Speed-to-Weight	0.06579 (1/sec·g) Faster than 5% of 1033 Digital Standard servos
Speed-Torque Trade-off	94.94 Better balanced than 95% of 1031 Digital Standard servos
Torque Gain per Volt	16.20%/V More voltage-responsive (torque) than 55% of 850 Digital Standard servos
Speed Gain per Volt	19.22%/V More voltage-responsive (speed) than 76% of 871 Digital Standard servos
Voltage Range Width	2.4 V Wider voltage range than 59% of 1539 Digital Standard servos