How to assemble an ARF RC aircraft step by step
A general ARF assembly workflow for many aircraft: dry fit, hinges, servo installation, power setup, CG, control checks and first-flight preparation.
CM633 Mini Digital Coreless DC Motor Metal Gear Servo 15.0Kgf.cm 0.08sec for Small Scale RC Cars & RC Aerobatics Planes
Prices are intentionally not displayed on the site.
Contact RC-MODEL for current availability, technical fit, compatible accessories and a formal quote.
CM633 Mini Digital Coreless DC Motor Metal Gear Servo 15.0Kgf.cm 0.08sec for Small Scale RC Cars & RC Aerobatics Planes is a KST Servos product selected for Car Servos, Aircraft 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
- High Torque & Excellent Speed
- Light Weight and Compact Design
- Programmable
- Dual Ball Bearings
- Coreless DC Motor
- Ideal for Small Scale RC Cars & RC Aerobatics Planes
Core Specifications
- Voltage Range: DC4.8V-8.4V
- Rated Voltage: DC7.4V
- Motor Type: Coreless DC Motor
- Gear Set Material: Metal Gear
- Ball Bearing: 2BB
- Case Dimensions: 33mm*15mm*30mm±0.2mm
- Weight: 35g±10%
- Item: CM633 Servo
- Torque: 9.0Kgf.cm@4.8V / 12.0Kgf.cm@6.0V / 13.8Kgf.cm@7.4V / 15.0Kgf.cm@8.4V
- Speed: 0.14sec/60°@4.8V / 0.11sec/60°@6.0V / 0.09sec/60°@7.4V / 0.08sec/60°@8.4V
- Stalling Current: 1.85A@4.8V / 2.65A@6.0V / 2.95A@7.4V / 3.25A@8.4V
- Working Frequency: 1520μs/333Hz
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.
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.
How to balance an RC aircraft and find the correct CG
One of the most important setup guides: find the CG, install the flight battery, balance the aircraft and avoid nose-heavy or tail-heavy surprises.
Mandatory pre-flight checks for safer RC flying
A repeatable inspection routine for control direction, radio range, failsafe, battery, fasteners, propeller, CG and field readiness.
How to perform the first test flight of an RC aircraft
Ground checks, takeoff planning, trim passes, battery timing and first landing strategy for a new or repaired RC aircraft.
| Technical Specifications | |
| Manufacturer | KST Servos |
| Brand | KST |
| Product Code | BR0023.0242 |
| All Variant SKUs | BR0023.0242 |
| Rated Voltage | DC7.4V |
| Voltage Range | DC4.8V-8.4V |
| Working Frequency | 1520μs/333Hz |
| Default Travel Angle | ±50° =100° Total |
| Temperature Range | -10℃.......+65℃ |
| Soft Start | Programmable |
| Programmable | Yes |
| Case Material | Aluminium Alloy |
| Motor Type | Coreless DC Motor |
| Gear Set Material | Metal Gear |
| Position Sensor | Potentiometer |
| Ball Bearing | 2BB |
| Case Dimensions | 33mm*15mm*30mm±0.2mm |
| Weight | 35g±10% |
| KST Collections | Car Servos, Industrial, Mini Servos, CM Series |
| Series | CM Series |
| Size Class | Mini Servos |
| Application | Car Servos, Aircraft Servos |
| Features | High Torque & Excellent Speed; Light Weight and Compact Design; Programmable; Dual Ball Bearings; Coreless DC Motor; Ideal for Small Scale RC Cars & RC Aerobatics Planes |
| Package Includes | 1 * CM633 Servo; 3 * Plastic Servo Horn; 1 * Servo Horn Screw; 4 * Mounting Screw; 4 * Rubber Grommet |
| Item | CM633 Servo |
| Torque | 9.0Kgf.cm@4.8V / 12.0Kgf.cm@6.0V / 13.8Kgf.cm@7.4V / 15.0Kgf.cm@8.4V |
| Speed | 0.14sec/60°@4.8V / 0.11sec/60°@6.0V / 0.09sec/60°@7.4V / 0.08sec/60°@8.4V |
| Stalling Current | 1.85A@4.8V / 2.65A@6.0V / 2.95A@7.4V / 3.25A@8.4V |
Tags: KST Servos, BR0023.0242, Car Servos, Industrial & UAV Servos, Mini Servos, CM Series, Aircraft Servos, Gears, RC servo