
Digital servo drive KST A20-3813
Powerful and fast digital servo drive KST A20-3813 high-voltage with a brushless motor and a metal gearbox.
USD · Volume pricing available
Categorías:
Certifications
Global Shipping 7-14 Days
DHL, FedEx, UPS, Air & Sea
Genuine Products
Authorized distribution
Export License Ready
ECCN, CO, CI, PL, EUS docs
24/7 Tech Support
Pre & post sales
Export Compliance
EAR99AI confidence 100% · NLR — No license required. Standard end-use statement recommended.
Buyer Tier Benefits
Tier discounts stack with volume pricing. Automatically applied after your first order.
Order the KST A20-3813 digital servo drive - precision control for your model
Achieve impeccable precision in every movement of your copter. The KST A20-3813 digital servo drive is designed for professional use. It provides instant and accurate response to commands. Your mechanisms will work smoothly and without delay. This is a reliable solution for demanding tasks. Your drone will get premium controls.
This servo is suitable for camera control and other systems. It is highly reliable and durable. You can trust him in the most difficult flights. Every movement will be precise and predictable. It's your choice for no-compromise projects.
Five main advantages of servo drive
-
High torque 3.8 kg/cm. Provides powerful and confident movement of mechanisms.
-
The rotation speed is only 0.06 sec at 60°. Guarantees instant response to control signals.
-
Precision metal gears. They can withstand heavy loads and do not wear out.
-
High precision potentiometer and hatchless motor. Ensure smooth running and precise positioning.
-
Durable die-cast aluminum housing. Effectively dissipates heat and protects internal components.
How does this servo work?
The servo drive receives the control signal from the receiver or controller. The built-in processor analyzes the incoming command. It determines the required position of the output shaft. The motor begins to rotate through a gearbox made of gears. The potentiometer continuously monitors the current rotation angle.
When the set position is reached, the motor rotation stops. This system works on the principle of feedback. It constantly adjusts the position of the shaft for accuracy. You get full control over the angle of rotation. Every movement is performed with maximum precision.
Technical characteristics and functionality
The device belongs to the class of digital servos. The operating voltage is 6.0-8.4 V (2S LiPo). The movement speed is 0.06 sec/60° at 7.4 V. The torque reaches 4.2 kg/cm at 8.4 V. The weight of the servo is only 20.5 grams.
The body is made of durable aluminum alloy. The gearbox consists of hardened metal gears. The shaft rotates on a precision ball bearing. This ensures minimal backlash and high accuracy. Device dimensions 35.5×16.5×33.5 mm.
The servo drive supports various types of control signals. Compatible with most modern receivers and controllers. The 25cm cable is convenient for most installations. The JR type connector provides a standard connection.
Specifications
- Operating voltage range (V): 6.0~8.4V
- Shaft rotation speed is 60 degrees. (sec): 0.15 (6.0V), 0.13 (7.4V), 0.12 (8.4V)
- Maximum shaft force (kg/cm): 30 (6.0V), 38 (7.4V), 43 (8.4V)
- Dimensions (mm): 40.5*20*38
- Weight (g): 72.







