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.
DS725MG HV Digital Coreless Servo 18Kgf.cm 0.07sec for 550 & 700 Size RC Helicopter
Prices are intentionally not displayed on the site.
Contact RC-MODEL for current availability, technical fit, compatible accessories and a formal quote.
DS725MG HV Digital Coreless Servo 18Kgf.cm 0.07sec for 550 & 700 Size RC Helicopter is a KST Servos product selected for 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.
Key Advantages
- Extreme Torque and Excellent Speed
- CNC Aluminium Case
- Two Ball Bearings
- Programmable
- Ideal for for 550 & 700 Size RC Helicopter
Core Specifications
- Voltage Range: DC6.0V-8.4V
- Rated Voltage: DC7.4V
- Motor Type: Coreless DC Motor
- Gear Set Material: Hardened Steel
- Ball Bearing: 2BB
- Case Dimensions: 40.5mm*20mm*38mm±0.2mm
- Weight: 70g±10%
- Item: DS725MG HV Servo
- Working Frequency: 1520μs/333Hz
- Default Travel Angle: ±50°=100° Total
- Temperature Range: -10℃……+65℃
- Soft Start: Programmable
Relevant RC Academy guides
Learn before you buy
These guides explain the setup, safety checks and accessory choices that usually matter for this product type.
Which servo fits each RC aircraft type?
A buying table for matching servo size, torque, speed, gear type and voltage to trainers, gliders, 3D aircraft, EDF jets and Giant Scale models.
How to install servos and linkages correctly
Mechanical setup guide for servo arms, linkage angles, throw, control horns, neutral position and radio setup after geometry is correct.
How to set Dual Rates and Expo on an RC transmitter
Make an aircraft calmer for beginners by setting low rates, high rates and expo without hiding mechanical setup problems.
How to set failsafe correctly on an RC aircraft
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 | BR0023.0133 |
| All Variant SKUs | BR0023.0133 |
| Rated Voltage | DC7.4V |
| Voltage Range | DC6.0V-8.4V |
| Working Frequency | 1520μs/333Hz |
| Default Travel Angle | ±50°=100° Total |
| Temperature Range | -10℃……+65℃ |
| Soft Start | Programmable |
| Programmable | Yes |
| Case Material | Aluminum Alloy |
| Motor Type | Coreless DC Motor |
| Gear Set Material | Hardened Steel |
| Position Sensor | Potentiometer |
| Ball Bearing | 2BB |
| Case Dimensions | 40.5mm*20mm*38mm±0.2mm |
| Weight | 70g±10% |
| KST Collections | Helicopter Servos, Industrial, Standard Servos, DS Series |
| Series | DS Series |
| Size Class | Standard Servos |
| Application | Helicopter Servos |
| Features | Extreme Torque and Excellent Speed; CNC Aluminium Case; Two Ball Bearings; Programmable; Ideal for for 550 & 700 Size RC Helicopter |
| Package Includes | 1 * DS725MG Coreless Servo; 4 * Plastic Servo Horn; 1 * Servo Horn Screw; 4 * Grommet; 4 * Eyelet |
| Item | DS725MG HV Servo |
| Product Type | RC |
Tags: KST Servos, BR0023.0133, Helicopter Servos, Industrial & UAV Servos, Standard Servos, DS Series, RC servo