Overview
The Kpower HBL835 Servo Motor is an HBL Series brushless servo motor with an aluminum case and metal gear train. It supports control via PWM, TTL, and RS-485, and is specified with a 40 × 20 × 38 mm form factor and 66 g weight for compact robotics and automation mechanisms.
Key Features
- HBL Series Servo: high torque brushless motor
- High-precision metal gear
- Aluminum alloy case material
- Protocols listed: PWM | TTL | RS-485
- Working frequency listed: 50 ~ 333 Hz (digital servo compatibility text also states 50–300 Hz high-frequency signals)
- 3-wire servo lead convention: Brown = GND, Red = Vcc, Orange = Signal
- Servo pulse width reference (20 ms per cycle): 0.5 ms / 1 ms / 1.5 ms / 2 ms / 2.5 ms; output shaft angle example: -90° / -45° / 0° / 45° / 90°
- Horn gear spline: 25T, φ5.9 mm
- IP rating: IP42
Specifications
| Model | HBL835 |
| Motor | Brushless |
| Gear Material | Metal |
| Case Material | Aluminum Alloy / Aluminum case (listed) |
| Position Sensor | Potentiometer |
| Ball Bearing | 2BB |
| Protocol | PWM | TTL | RS-485 |
| Operating Voltage | 4.8 ~ 8.4 V |
| Operating Temperature | -10 ~ 50°C |
| Working Frequency | 50 ~ 333 Hz |
| Dimension | 40 × 20 × 38 mm |
| Weight | 66 g |
| No-load Speed | 0.10 s/60° |
| No-load Current | 4100 mA |
| Travel Angle Range | 120° (Customizable) |
| Horn Gear Spline | 25T, φ5.9 mm |
| IP Rating | IP42 |
| Stall Torquee | 15 kg |
| Rated Torquee | 3.5 kg |
| Torque (listed) | 13.8 kg.cm @ 6.0 V; 15.6 kg.cm @ 7.4 V |
| Speed (listed) | 0.12 sec/60 @ 6.0 V; 0.10 sec/60 @ 7.4 V |
Applications
- Humanoid Robots
- Robotic Arms
- Exoskeletons
- Quadruped Robots
- AGV Vehicles
- ARU Robots
- Desktop robot arm mechanisms
- Industrial valve actuation
- Underwater robot mechanisms
- Smart bidet mechanisms
- 1/5 scale remote control car model
- STEAM education projects
- Industrial automation mechanisms
- UAV drone mechanisms
- Medical equipment/device mechanisms (e.g., endoscope mechanism components)
Manuals
Details
Built for compact robotics, the HBL835 pairs a brushless motor with a durable metal gear train and aluminum housing.
Brushless drive and precision metal gears help maintain smooth, repeatable motion under load.
The HBL835 keeps a small 40×20×38 mm footprint and supports PWM, TTL, and RS-485 control for flexible integration.
Torque and speed ratings are provided at both 6.0 V and 7.4 V to match common power setups.
Use the voltage, rotation angle, and speed notes as a quick guide when sizing a servo for your mechanism.
Multiple horn shapes make it easier to match the output spline to linkages, arms, and brackets.
Standard servo pulse widths (0.5–2.5 ms per 20 ms cycle) map directly to output angle for straightforward PWM setup.
For OEM builds, customization options can include torque targets, communication protocols, wiring, and protection features.
For continuous duty, selecting a rated torque well below stall torque helps manage heat and reliability.
Wiring follows the common 3-lead convention: Brown = GND, Red = Vcc, Orange = Signal.
Internal component layout highlights typical servo elements like multi-stage gears, bearings, and the position sensor.
A compact servo platform like HBL835 fits projects ranging from desktop robots to industrial automation and UAV mechanisms.
ODM support can cover the full path from requirements and design through sampling and production ramp-up.
