Servo selection: torque, speed, gears and voltage
How to select servos for trainers, sport aircraft, large models, cars and boats without under-sizing a control surface.
A20-4515 Brushless HV Phosphor Bronze & Hardened Steel Gear Servo 50Kgf.cm 0.13sec/60degree is a KST Servos product selected for Aircraft Servos, Car Servos, Industrial & UAV Servos. This page is written for practical buying decisions, with the key fit, size, voltage and performance details organized in one place.
Use it to compare torque, speed, voltage range, construction, dimensions, weight, variants and accessory compatibility before choosing the right component for an RC aircraft, helicopter, car, glider, UAV or workshop installation.
These guides explain the setup, safety checks and accessory choices that usually matter for this product type.
How to select servos for trainers, sport aircraft, large models, cars and boats without under-sizing a control surface.
A buying table for matching servo size, torque, speed, gear type and voltage to trainers, gliders, 3D aircraft, EDF jets and Giant Scale models.
Mechanical setup guide for servo arms, linkage angles, throw, control horns, neutral position and radio setup after geometry is correct.
Make an aircraft calmer for beginners by setting low rates, high rates and expo without hiding mechanical setup problems.
Failsafe setup for electric and fuel aircraft: throttle behavior, receiver signal loss, switch positions and safe verification before flight.
| Technical Specifications | |
| Manufacturer | KST Servos |
| Brand | KST |
| Product Code | BR0023.0141 |
| All Variant SKUs | BR0023.0141 |
| Case Material | Aluminum Alloy |
| Motor Type | Brushless |
| Gear Set Material | Phosphor Bronze & Hardened Steel |
| Case Dimensions | 40.5mm*20mm*42mm |
| Weight | 80g |
| KST Collections | Aircraft Servos, Car Servos, Industrial, Industrial Servos, Standard Servos, A Series |
| Series | A Series |
| Size Class | Standard Servos |
| Application | Aircraft Servos, Car Servos, Industrial & UAV Servos |
| Features | Brushless DC motor; Hardened Steel Gears; Extreme torque and Excellent speed; CNC aluminium case |
| Package Includes | 1 * A20-4515 Servo; 1 * Pack of Accessories; Download; A20-4515 Servo Technical Specification |
| Item | A20-4515 Brushless HV Servo |
| Torque | 36Kgf.cm@6.0V, 45Kgf.cm@7.4V, 50Kgf.cm@8.4V |
| Speed | 0.19sec/60°@6.0V, 0.15sec/60°@7.4V, 0.13sec/60°@8.4V |
| Product Type | RC |
| Operating Temperature Range | -20℃ to +65℃ |
| Operation Voltage(rated) | DC7.4V |
| Operation Voltage Range | DC6.0V-8.4V |
| Shielded Connecting Cable | 22AWG |
Tags: KST Servos, BR0023.0141, Aircraft Servos, Car Servos, Industrial & UAV Servos, Standard Servos, A Series, Gears, RC servo
We use essential cookies to operate the store. Optional cookies are used only with your consent. You can read the full policy here.