Overview
Kpower HBL833 is a brushless servo motor designed for compact, high-response actuation in robotics and automation projects. It supports multiple control interfaces (PWM, TTL, RS-485) and uses a metal geartrain with an aluminum-alloy case.
Key Features
- HBL Series Servo
- High torque brushless motor
- High-precision metal gear
- Ultra high cycle lifespan
- Multi-protocol control: PWM | TTL | RS-485
- Travel angle range: 120° (Customizable)
- Metal gears, aluminum-alloy case, and 2 ball bearings (2BB)
Specifications
| Model | HBL833 |
| Stall Torque | 10.6 kg |
| Rated Torque | 3 kg |
| Speed | 0.07 s/60° |
| No-load Speed | 0.07 s |
| Operating Voltage | 4.8 ~ 8.4 V |
| No-load Current | 2500 mA |
| Working Frequency | 50 ~ 333 Hz |
| Travel Angle Range | 120° (Customizable) |
| Horn Gear Spline | 25T φ5.9 mm |
| Gear Material | Metal |
| Motor | Brushless Motor |
| Position Sensor | Potentiometer |
| Protocol | PWM | TTL | RS-485 |
| Case Material | Aluminum Alloy |
| Ball Bearing | 2BB |
| Operating Temperature | -10 ~ 50°C |
| IP Rating | IP42 |
| Dimensions | 40 × 20 × 38 mm |
| Weight | 66 g |
Applications
- Humanoid robots
- Robotic arms
- Exoskeletons
- Quadruped robots
- AGV vehicles
- ARU robots
- UAV drone platforms
- R/C aircraft
- Industrial automation
Wiring (3-pin)
- Brown: GND
- Red: Vcc
- Orange: Signal
Control Signal Notes
- Input signal pulse width (20 ms per cycle): 0.5 ms / 1 ms / 1.5 ms / 2 ms / 2.5 ms
- Example output shaft angles: -90° / -45° / -0° / 45° / 90°
- Digital servos extend compatibility to 50–300 Hz high-frequency signals.
Manuals
Details

Kpower HBL833 is a compact brushless servo built for fast, high-response actuation in robotics and automation.

A brushless motor and high-precision metal geartrain are designed for durability in high-cycle applications.

Choose the HBL series model that matches your torque and speed needs while keeping the same multi-protocol control options.

Metal gearing supports consistent positioning performance under load.

Use torque, travel angle, and supply voltage together to size a servo correctly for your mechanism and duty cycle.

Multiple horn styles make it easier to match the output spline to different linkages and brackets.

PWM control uses a 20 ms cycle pulse width to set angle, with digital servo compatibility for higher-frequency signals.

Customization options are available for applications that need specific torque targets, interfaces, or wiring requirements.

For continuous use, rated torque is typically far below stall torque to manage heat and current draw.

Standard 3-wire connection keeps integration simple: power (Vcc), ground (GND), and signal.

Key internal parts include the gear stages, bearings, position sensor, and control electronics inside the housing.

Suitable for a wide range of mechatronics projects, from robotic joints to industrial automation and UAV platforms.

ODM support follows a structured path from requirements and design through sampling and scalable production.
