Overview
Kpower WK-P0043 (P0043) is a 4.3 g micro servo motor designed for compact RC and robotics mechanisms where low mass and fast response are required. It uses a coreless motor, POM plastic gears, and a potentiometer position sensor, and supports PWM control (additional control types are also listed in the product materials).
Key Features
- Ultra-light micro servo: 4.3 g; compact size for tight installations
- Coreless motor with plastic (POM) gear train
- Fast response speed listed: 0.07 sec/60° (at 6.0 V); 0.08 sec/60° (at 4.8 V)
- Travel angle: 120° (customizable); horn spline: 20T, φ3.6 mm
- Dual ball bearing / 2BB (listed)
- Environmental ratings listed: IP42; operating temperature -10 to 50°C
Specifications
| Model / Label | WK-P0043 (P0043) |
| Stall Torque | 0.8 kg.cm @ 4.8 V; 0.9 kg.cm @ 6.0 V |
| Stall Torque (provided table) | 0.9 kg |
| Rated Torque (provided table) | 0.2 kg |
| No-load Speed (provided table) | 0.07 s |
| No-load Speed | 0.08 sec/60° @ 4.8 V; 0.07 sec/60° @ 6.0 V |
| Operating Voltage | 4.8 to 8.4 V |
| Working Frequency | 50 to 333 Hz |
| Travel Angle Range | 120°±5 (customizable) |
| Protocol (provided table) | PWM |
| Protocol (listed) | PWM / TTL / RS-485 |
| Pulse Lengths | 900 to 2100 us |
| Dead Band | 6 us |
| Position Sensor | Potentiometer |
| Motor | Coreless motor |
| Gear Material | POM |
| Case Material | Plastic / Plastics |
| Ball Bearing | 2BB / dual ball bearing (listed) |
| Horn Gear Spline | 20T, φ3.6 mm |
| Wire Length | 190 mm |
| Weight | 4.3 g |
| Dimensions | 19.8 × 8.2 × 24.3 mm (0.78" × 0.32" × 0.96") |
| Current | 500 mA (listed as Stall Current in product materials; listed as No-load Current in provided table) |
| Operating Temperature | -10 to 50°C |
| IP Rating | IP42 |
For pre-sales selection help or customization questions (such as travel angle, wire length, or control type), contact the store customer service team.
Applications
- Humanoid robots, robotic arms, exoskeletons, quadruped robots
- AGV vehicles, ARU robots
- RC models, R/C airplane models, hand-launch gliders
- Small drones
- Micro robots, multi-legged bionic robots, micro toys
- Smart door locks, smart wearable devices
- STEAM car kits
Manuals
Details
WK-P0043 (P0043) is an ultra-light 4.3 g micro servo built for tight RC and robotics installations where fast response matters.
At only 4.3 g, the small footprint helps reduce payload weight in micro mechanisms and compact airframes.
Key specs and included accessories are summarized for quick selection during prototyping and integration.
Coreless motor design targets quick, precise movement for responsive control in RC models.
Standard PWM control keeps it compatible with common receivers and controllers, while the plastic gear train supports quiet operation.
Use the P-series comparison to choose the best balance of weight and dimensions for your build.
Hardware and horn options are included to match different linkage layouts and mounting needs.
Designed for smooth control in small aircraft and drone projects where stable movement is important.
Typical use cases range from micro robots and gliders to compact smart-device mechanisms.
A flexible choice for hobby RC vehicles, lightweight drones, and classroom STEAM builds.
