Yahboom 15/20/25KG Metal Digital Servo, Metal Gears, 30cm Lead, 0-180°, IP66 PWM for Robots & RC Steering
Yahboom 15/20/25KG Metal Digital Servo, Metal Gears, 30cm Lead, 0-180°, IP66 PWM for Robots & RC Steering
Yahboom
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Overview
The Yahboom 15KG/20KG/25KG metal digital servo (also referred to as a digital steering gear) is designed for DIY creation, robot development, and other MCU-controlled projects. It uses all-metal gears and a metal output shaft, supports PWM pulse width control, and includes a 30cm (300±5mm) lead. Compared with ordinary servos, it is described as having higher precision, better linearity, faster response, larger torque, lower noise, and better stability.
Key Features
- High torque options: 15KG / 20KG / 25KG class
- All metal gear train; metal output shaft
- IP66 protection; sealing rings used at the joints of the case
- Standard PWM pulse width control; compatible with common MCUs such as Arduino and Raspberry Pi
- Rotation angle: 180° (20KG model also lists 180°/270° optional)
- PWM pulse width mapping example (cycle: 20ms): 0.5ms/1ms/1.5ms/2ms/2.5ms corresponds to 0°/45°/90°/135°/180°
- Green oxidized metal middle frame case on 20KG/25KG models (better heat dissipation capacity)
Specifications
| Parameter | 15KG Metal Digital Servo | 20KG Metal Digital Servo | 25KG Metal Digital Servo |
|---|---|---|---|
| Working voltage | 6.0~7.4V DC | 6.0~7.4V DC | 6.0~7.4V DC |
| No load current (7.4V) | 150mA | 150mA | 180mA |
| No load speed (7.4V) | 0.21Sec/60° | 0.20sec/60° | 0.17sec/60° |
| Locked rotor torque (7.4V) | 23kgf.cm | 28kgf.cm | 32kgf.cm |
| Locked rotor current (7.4V) | 4.0A | 3.6A | 6.0A |
| Pulse width range | 500~2500us corresponding 0~180° | 500~2500us corresponding 0~180° | 500~2500us corresponding 0~180° |
| Dead band width | 5us | 3us | 3us |
| Rotation angle | 180° | 180°/270° (Optional) | 180° |
| Line length | 300±5mm | 300±5mm | 300±5mm |
| Gear material | Metal gear | Metal gear | Metal gear |
| Output shaft material | Metal shaft | Metal shaft | Metal shaft |
| Middle frame material | Plastic middle frame | Metal middle frame | Metal middle frame |
| Control mode | PWM pulse width control | PWM pulse width control | PWM pulse width control |
| Protection | IP66 | IP66 | IP66 |
| Working life | 1,000,000 Cycles (Min) | 1,000,000 Cycles (Min) | 1,000,000 Cycles (Min) |
| Weight | 62±1g | 68±1g | 70±1g |
| Rocker arm type | 25T/Φ5.9mm | 25T/Φ5.9mm | 25T/Φ5.9mm |
Applications
- Bionic robots (15KG option is described as lighter and suitable for bionic robots)
- Smart cars, remote control boats, robotic arms (20KG option is described for projects requiring response speed, stall current, and torque)
- RC remote control cars, visual robotic arms (25KG option is described for projects requiring accuracy, torque, and response speed)
- Steering structures such as Ackermann steering cars and model cars (rudder arm use)
- Rotational joints / degree-of-freedom mechanisms such as robotic arms (rudder wheel use)
What's Included
- Metal digital servo (15KG / 20KG / 25KG option)
- Metal rudder arms (metal servo horns)
- Tutorials and program source code (provided as resources)
Manuals
For selection guidance or integration support (PWM settings, MCU control, or servo horn fitment), contact support@rcdrone.top or visit https://rcdrone.top/.
Details
Choose the 15KG/20KG/25KG option by comparing working voltage, speed, stall torque, and PWM pulse width range.
Pick 15KG for lighter bionic builds, 20KG for balanced speed and torque, or 25KG for higher accuracy and torque-demanding joints.
Servo horns and wheels make it easy to build steering linkages and rotary joints for robotic arms and multi-DOF structures.
Digital control helps improve response and positioning consistency under typical MCU PWM control.
Standard 20ms PWM timing maps pulse width to output angle for predictable 0–180° positioning.
All‑metal gears are designed for durability and smoother torque delivery in high-load servo applications.
Sealing rings at the case joints support IP66 protection for use in dusty environments or splash-prone builds.
The 20KG and 25KG versions use a metal middle frame to help with heat dissipation during sustained load.
A 30cm lead with a standard 3‑wire connector keeps PWM signal, positive, and negative lines easy to route in tight chassis.
A PWM servo tester board helps verify direction, endpoints, and centering before installing the servo into a mechanism.
The Yahboom metal digital servo suits common robotics projects such as rotating platforms, RC car steering, and small robotic arms.
Yahboom 15/20/25KG digital servos come with a standard 3-wire lead and 3-pin connector for straightforward RC wiring.
The servo warning note advises keeping the output shaft rotation unobstructed to avoid current spikes, rising temperature, and gear damage.
Yahboom 15/20/25KG metal digital servos use a standard rectangular case, with dimensioned drawings for the body and included servo horn wheel and arm to help plan mounting and linkage.
The 15kg 180° metal digital servo comes with a plastic horn accessory set plus a metal rudder arm and mounting hardware for installation.
The 180° single-axis digital servo comes with a plastic accessory kit and a metal steering wheel for mounting and linkage setup.
The Yahboom digital metal servo includes a metal rudder arm and a mixed hardware kit with horns and screws for easy installation.
The 20kg 180° metal digital servo comes with servo horns, a metal rudder arm, and mounting hardware for straightforward installation.
The 20kg 270° metal digital servo comes with a horn assortment, mounting screws, and a 25T metal rudder arm for versatile linkage setups.
The 20kg 270° metal digital servo includes a horn set and mounting hardware for straightforward linkage and installation.
Yahboom metal digital servo includes a plastic accessory kit and a 25T metal rudder arm with mounting hardware for easy installation.
The Yahboom metal digital servo comes with assorted horns, a metal servo arm, and screws for straightforward mounting and linkage setup.
