Overview
The Flashhobby CLS4050RP is a high-torque digital servo designed for 6.0–8.4V systems, featuring a coreless motor, CNC aluminum case, and IP67-rated waterproof level. It supports programmable settings and is mode compatible with Sanwa SSR/SUR, Flysky NB4 SFR, and Futeba SR.
Key Features
- Programmable PWM digital amplifier
- 32-bit MCU
- Coreless motor
- Steel gears; high-precision helical gears (low noise, smooth operation)
- Dual ball bearing supported output shaft (2BB)
- 25-tooth output spline
- Wide operating voltage: DC 6.0–8.4V
- Diamond-cut aluminum heat sink shell; full aluminum CNC case (AL6061)
- Water resistant and waterproof case (IP67 waterproof level)
- Soft start function: Included
Programmable Functions
- End Point Adjustments
- Direction
- Fail Safe
- Dead Band
- Speed (Slower)
- Soft Start Rate
- Overload Protection
- Data Save / Load
- Program Reset
Specifications
| Model | CLS4050RP |
|---|---|
| Control system | PWM Control (1500usec in the central point) |
| Operation voltage range | DC 6.0–8.4V |
| Refresh rate | Compatible 50Hz–1000Hz |
| Operation temperature range | -20C to +70C |
| Pulse width | 500 to 2500 uSec |
| Cycle life | > one million times without load |
| Operation travel | 180° ± 5° |
| Programmable angle | YES |
| Direction | CW |
| Driver type | Mos Drive |
| Motor type | Coreless |
| Angle sensor | Potentiometer |
| Signal type | Digital Control |
| Soft start function | Included |
| Mode compatible | Sanwa SSR/SUR; Flysky NB4 SFR; Futeba SR |
| Waterproof level | IP67 |
| Gear | Steel gears |
| Dimension | 40 x 20 x 40.5mm |
| Weight | 80g ± 10g (without servo horn) |
| Ball bearing | 2BB |
| Case material | Full aluminum CNC (AL6061) |
| Connector wire length | 22AWG 260mm JR |
| Wire info (Black) | Negative |
| Wire info (Black) | Positive |
| Wire info (White) | S Single |
| Standing torque @ 6.0V | 38kg-cm / 527 oz-in |
| Standing torque @ 7.4V | 45kg-cm / 625 oz-in |
| Standing torque @ 8.4V | 50kg-cm / 694 oz-in |
| Speed @ 6.0V | 0.15sec/60° |
| Speed @ 7.4V | 0.12sec/60° |
| Speed @ 8.4V | 0.11sec/60° |
| Running current @ 6.0V | 3400mA |
| Running current @ 7.4V | 4000mA |
| Running current @ 8.4V | 4800mA |
| Dead band width | 2uSec |
What’s Included
- CLS4050RP servo
- Servo horns/accessories set (includes 25T aluminum servo horn, plastic horns, screws, rubber grommets, brass eyelets)
- Storage box (packaging)
Applications
- RC cars and trucks requiring high-torque waterproof digital servo performance
- Robotics and mechanical projects using 6.0–8.4V PWM servos
For product support and setup assistance, contact https://rcdrone.top/ or email support@rcdrone.top.
Details

Flashhobby CLS4050RP digital servo features an 8.4V 50KG coreless design with 180° travel and a waterproof build for wet conditions.

Flashhobby CLS4050RP coreless digital servo features an IP67-rated waterproof case and a compact 40.5 mm body for tight installs.

The Flashhobby CLS4050RP 8.4V 50KG coreless digital servo features an IP67-rated case, diamond-cut aluminum heat-sink shell, and support for Sanwa SSR, NB4, and Futaba modes.

The Flashhobby CLS4050RP servo uses a 25T output spline and comes with multiple servo horns and mounting hardware for installation.

CLS4050RP uses PWM control (1500µs center) and supports 6.0–8.4V operation with an IP67 waterproof rating.

The Flashhobby CLS4050RP coreless digital servo includes a 25T metal servo horn, plastic arms, and a set of mounting screws and bushings.

The Flashhobby CLS4050RP servo comes packaged in a compact protective storage box for easy transport and organization.
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