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.
X20-7.4-M-820 Brushless HLS 6BB Servo 30Kgf.cm 0.09sec for RC Helicopters is an RC product from KST Servos. This page focuses on what an end customer needs: fit, use cases, specifications and imagery, without prices or outbound supplier detours.
X20-7.4-M-820 Brushless HLS 6BB Servo 30Kgf.cm 0.09sec for RC Helicopters fits customers looking for KST Servos items in Helicopter Servos, Industrial & UAV Servos, Standard Servos, with RC-MODEL support for choosing the right configuration.
X20-7.4-M-820 Brushless HLS 6BB Servo 30Kgf.cm 0.09sec for RC Helicopters is a KST Servos product selected for Car Servos, Helicopter 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 | BR0023.0154-1 |
| All Variant SKUs | BR0023.0154-1 |
| Rated Voltage | DC7.4V |
| Voltage Range | DC6.0V-8.4V |
| Stalling Torque | [email protected] |
| No-load Speed | 0.09sec/60°@7.4V |
| Working Frequency | 1520μs/333Hz |
| Default Travel Angle | ± 100°=200° Total When 500μs-2500μs |
| Temperature Range | -10℃……+65℃ |
| Case Material | Aluminium Alloy |
| Motor Type | Brushless DC Motor |
| Gear Set Material | Hardened Steel (HLS) |
| Position Sensor | Contactless |
| Ball Bearing | 6 BB |
| Case Dimensions | 40mm*20mm*40mm±0.2mm |
| Weight | 75g±10% |
| KST Collections | Helicopter Servos, Car Servos, Industrial, Standard Servos, X Series |
| Series | X Series |
| Size Class | Standard Servos |
| Application | Car Servos, Helicopter Servos |
| Features | Brushless DC Motor; Hardened Steel Gears; Contactless Sensor; Extreme Torque and Excellent Speed; CNC Aluminium Case; 6 Ball Bearings |
| Package Includes | 1 * X20-7.4-M-820 Standard Servo; 1 Pack of Accessories; Download; X20-7.4-M-820 Servo Technical Specification |
| Item | X20-7.4-M-820 HV Servo |
| Product Type | RC |
| Rated Torque | [email protected] |
| Rated Speed | 0.17sec/60°@7.4V |
| Rated Current | 1.25A |
| Stalling Current | 4.95A |
Tags: KST Servos, BR0023.0154-1, Helicopter Servos, Car Servos, Industrial & UAV Servos, Standard Servos, X Series, 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.