Flashhobby BLS4037RP Brushless Digital Servo 37kg-cm @8.4V, IP67, 25T Spline, CNC Aluminum, JR
Flashhobby BLS4037RP Brushless Digital Servo 37kg-cm @8.4V, IP67, 25T Spline, CNC Aluminum, JR
Flashhobby
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Overview
Flashhobby BLS4037RP is a brushless digital servo rated up to 37kg-cm at 8.4V, designed for high-torque RC steering and control surfaces. It supports a wide DC input range of 6.0–8.4V and uses a full aluminum CNC case with an IP67 waterproof level.
Key Features
- Brushless motor, digital control, MOS drive
- Programmable PWM digital amplifier with 32-bit MCU
- Wide operating voltage: DC 6.0–8.4V
- Steel gears; helical gear design description: small backlash, high bite, low noise, high smoothness
- Dual ball bearing supported output shaft (2BB)
- 25-tooth output spline
- Diamond-cut aluminum heat sink shell; full aluminum CNC case material
- Water resistant and waterproof case, waterproof level: IP67
- Mode compatible: Sanwa SSR/SUR, Flysky NB4 SFR, Futaba SR
Specifications
| Model | BLS4037RP |
| Control system | PWM control (1520uSec in the central point) |
| Signal type | Digital control |
| Motor type | Brushless |
| Driver type | MOS drive |
| Angle sensor | Potentiometer |
| Operation voltage range | DC 6.0~8.4V |
| Refresh rate | Compatible 50Hz~1000Hz |
| Operation temperature range | -20C ~ +70C |
| Pulse width | 500 to 2500 uSec |
| Circle | > one million times without load |
| Operation travel | 180° ± 5° |
| Programmable angle | YES |
| Direction | CW |
| Soft start function | Included |
| Waterproof level | IP67 |
| Gear | Steel gears |
| Ball bearing | 2BB |
| Case material | Full aluminum CNC (CNC AL6061 aluminum case) |
| Dimensions | 40x20x40.5mm |
| Weight | 80g ± 10g (without servo horn) |
| Connector | JR plug |
| Connector wire length | 22AWG 260mm JR (also listed as 300MM JR plug) |
| Wire info (Black) | Negative |
| Wire info (Black) | Positive |
| Wire info (White) | S Single |
Performance (Test Voltage)
| Parameter | At 6.0V | At 7.4V | At 8.4V |
|---|---|---|---|
| Standing torque | 26kg-cm (361oz-in) | 31kg-cm (430oz-in) | 37kg-cm (514oz-in) |
| Speed | 0.10sec/60° | 0.08sec/60° | 0.07sec/60° |
| Running current | 3500mA | 4000mA | 4600mA |
| Dead band | 2uSec | 2uSec | 2uSec |
Programmable Functions
- End point adjustments
- Direction
- Fail safe
- Dead band
- Speed (slower)
- Soft start rate
- Overload protection
- Data save / load
- Program reset
What’s Included
- 1x Flashhobby BLS4037RP servo
- Servo horns (plastic and aluminum)
- Mounting hardware (screws, grommets, brass eyelets)
For compatibility or setup support (PWM settings, programming functions, and installation), contact support@rcdrone.top or visit https://rcdrone.top/.
Details
The Flashhobby BLS4037RP brushless digital servo features a compact metal case with clear 8.4V and 37kg markings for quick identification during installs.
The Flashhobby BLS4037RP brushless digital servo features an IP67 water-resistant case and a compact 40 mm x 20 mm body for tight installs.
Flashhobby BLS4037RP brushless digital servo features an IP67-rated, diamond-cut aluminum heat-sink shell and supports Sanwa SSR, NB4, and Futaba modes.
The Flashhobby BLS4037RP brushless digital servo uses a 25-tooth output spline and includes servo horns, bushings, and mounting screws for setup.
Flashhobby BLS4037RP brushless digital servo supports 6.0–8.4V operation, 180° travel, and lists IP67 protection, torque, speed, and mounting dimensions.
The Flashhobby BLS4037RP brushless digital servo includes multiple servo horns, rubber grommets, bushings, and mounting screws for installation.
The Flashhobby BLS4037RP brushless digital servo comes in a branded clear-lid plastic case with a snap latch for protected storage.
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