Overview
The DSpower DS-R003B PWM servo motor is offered in DS-R003B(25KG) and DS-R003B(35KG) versions for robotics. Both versions use a 6.0–8.4 V DC supply, PWM communication, CW/CCW control over a 500–2500 μs pulse range, 180° ± 10° operating travel, and a 360° mechanical limit. Select the version according to its stated stall torque, speed, construction, and weight specifications.
Features
- Both versions use a PWM communication interface and support CW/CCW rotation with 500–2500 μs control pulses.
- The DS-R003B(35KG) version has metal gears and an aluminium alloy + PA66 case. Its feature information also identifies high-precision strong steel gears, a CNC aluminium middle shell, overload protection, over-temperature protection, and anti-interference ability.
- The DS-R003B(35KG) feature information states that its metal gear is intended to withstand higher loads and extend service life.
- The DS-R003B(25KG) version uses an ABS case and a core motor.
Specifications
| Parameter | DS-R003B (25KG) | DS-R003B (35KG) |
|---|---|---|
| Operating voltage | 6.0–8.4 V DC | 6.0–8.4 V DC |
| No-load speed | ≤ 0.16 sec/60° | ≤ 0.12 sec/60° |
| No-load current | ≤ 200 mA at 6 V | — |
| Rated torque | 8.0 kgf | — |
| Stall current | ≤ 5.0 A | ≤ 5.0 A |
| Stall torque | ≥ 25.0 kgf·cm | ≥ 35.0 kgf·cm |
| Rotating direction | CW / CCW (500–2500 μs) | CW / CCW (500–2500 μs) |
| Pulse width range | 500–2500 μs | 500–2500 μs |
| Operating travel angle | 180° ± 10° | 180° ± 10° |
| Mechanical limit angle | 360° | 360° |
| Weight | 21 ± 1 g | 66 g |
| Case material | ABS | Aluminium alloy + PA66 |
| Gear set material | — | Metal |
| Communication interface | PWM | PWM |
| Motor type | Core motor | — |
| Dead Zone Width | — | Ø6.0 × 25T |
| Housing material | ABS | — |
Applications
The product is identified for humanoid robots, robotic arms, exoskeletons, quadruped robots, AGV vehicles, and ARU robots. The DS-R003B(35KG) version is also presented for RC airplanes, RC cars, and walking robots, where its stated ≥ 35.0 kgf·cm stall torque and PWM control can be considered for controlled actuation tasks.
Documents
DS R003B 1 DSpower Servo Motor — Product Document (PDF)
R003B 20220406 DSpower DS Servo Motor — 3D Model (STP)
Visual Details
Application Examples



