22mm Brushless Gear Motor 24V 250RPM 0.64Nm 16-Bit Encoder | WR22ST48-36
22mm Brushless Gear Motor 24V 250RPM 0.64Nm 16-Bit Encoder | WR22ST48-36
WR22ST48-36 22mm Brushless Coreless Gear Motor — 24V | 17W | 250RPM | 0.64Nm | 16-Bit Encoder
This compact yet powerful 22mm brushless coreless gear motor (model WR22ST48-36) delivers precise, high-efficiency motion control in a miniature form factor. Running on 24V DC with a 17W rated output and a 36:1 planetary reduction ratio, it spins down to a smooth 250RPM output speed while delivering a rated output torque of 0.64Nm — ideal for robotics, automation equipment, precision instruments, and compact drive systems. The integrated 16-bit encoder provides high-resolution position and speed feedback over RS-485 (SD+/SD−), making it well-suited for closed-loop motion control applications.
Made in Mainland China.
Full Technical Specifications
| Model | WR22ST48-36 |
| Motor Diameter | 22mm |
| Rated Voltage | 24V DC |
| Rated Power | 17W |
| Rated Current | 1A |
| Phase Number | 3-Phase |
| Pole Pairs | 1 Pole Pair |
| Back-EMF Constant | 2.5V/krpm (no-load) |
| No-Load Speed | 10,000 RPM |
| Rated Motor Speed | 9,000 RPM |
| Rated Motor Torque | 1.8 Ncm |
| Peak Motor Torque | 3.6 Ncm |
| Reduction Ratio | 36:1 |
| Output Rated Speed (with Gearbox) | 250 RPM |
| Output Rated Torque (with Gearbox) | 0.64 Nm |
| Encoder Resolution | 16-Bit |
| Communication Protocol | RS-485 (SD+ / SD−) |
Wiring & Connection Guide
Power Lines
- Yellow — Phase U
- Green — Phase V
- Blue — Phase W
Encoder Lines
- Red — 5V Supply
- Black — GND
- Yellow — SD+ (RS-485 A)
- Green — SD− (RS-485 B)
Key Features
- Compact 22mm Brushless Design: Coreless construction for low inertia, fast dynamic response, and long service life.
- High-Resolution Feedback: 16-bit encoder enables accurate closed-loop speed and position control.
- Integrated Planetary Gearbox: 36:1 reduction ratio steps down motor speed to a usable 250RPM while multiplying torque output.
- RS-485 Communication: Supports multi-drop networking for easy integration into industrial or robotic control systems.
- Efficient & Reliable: Brushless motor architecture eliminates brush wear for extended maintenance-free operation.
- Broad Application Range: Suitable for robotics joints, AGVs, precision conveyors, medical devices, laboratory automation, and more.
What's in the Box
- 1× WR22ST48-36 Brushless Coreless Gear Motor with Encoder
Important Notes
- Due to lighting and display settings, the actual product color may vary slightly from images.
- Please allow ±1mm tolerance due to manual measurement.
- Battery and wireless components are NOT included.
For general guidance on brushless motor safety and electrical best practices, refer to OSHA's Electrical Safety Standards.
Frequently Asked Questions
Q: What is the output speed and torque of the WR22ST48-36 gear motor?
A: With the 36:1 planetary gearbox, the output rated speed is 250RPM and the output rated torque is 0.64Nm. The motor core itself runs at a rated speed of 9,000RPM before the gearbox reduction.
Q: What encoder type does this brushless motor use, and what communication interface does it support?
A: This motor is equipped with a 16-bit high-resolution encoder that communicates via RS-485 (SD+/SD− differential signal), making it compatible with a wide range of industrial motion controllers and microcontrollers with UART/RS-485 interfaces.
Q: Is this motor suitable for robotics and automation projects?
A: Yes. The compact 22mm brushless coreless design, high-resolution encoder, and RS-485 feedback interface make this motor an excellent choice for robotics joints, automated guided vehicles (AGVs), precision actuators, laboratory instruments, and similar closed-loop motion control applications.
Q: What voltage and power supply does the WR22ST48-36 require?
A: The motor operates on a 24V DC supply with a rated current draw of 1A and a rated power of 17W. Ensure your power supply can provide a stable 24V output with at least 1A continuous current capacity.