What makes a coreless motor truly exceptional isn’t just the technology—it’s how that technology is engineered into real-world products that deliver measurable performance. At Sinbad Motor, every coreless motor is designed with specific applications in mind, combining the inherent advantages of coreless technology with meticulous parameter tuning to meet the most demanding requirements.
Let’s take a closer look at three representative products from Sinbad’s coreless motor portfolio.
XBD-1331 – The Compact Workhorse
The XBD-1331 is a 13mm coreless brushed gear motor that packs impressive performance into a miniature footprint. Weighing just 20 grams, this motor features a single-pole slot design that reduces both mechanical and electromagnetic noise, ensuring smooth operation. Its coreless construction delivers low mass inertia and rapid reaction with a low starting voltage.
Key Specifications:
- Voltage options: 3V, 6V, 12V, 24V
- Maximum efficiency: Up to 80.8%
- Mechanical time constant: As low as 4.2 ms-
- Rotor inertia: 0.65 g·cm²
- Typical noise level: ≤38 dB
- No-load speed: Up to 16,200 rpm
Why it stands out: The XBD-1331′s lightweight design and fast response speed enable high-speed, high-precision control. Its stable output torque and strong output power make it suitable for a wide range of high-speed and high-torque applications. The use of precious metal brushes enhances performance and longevity.
Ideal applications: Robots, drones, medical equipment, electric screwdrivers, beauty machines (tattoo pens, nail drills), precision instruments, and more.
XBD-1640 – Brushless Power in a Compact Package
The XBD-1640 is a small, high-performance coreless brushless DC motor designed for applications where size and weight are critical factors. The brushless design eliminates the need for brushes, increasing efficiency and lifespan while reducing maintenance requirements.
Key Specifications:
- Voltage options: 12V, 18V, 24V, 36V
- Maximum efficiency: Up to 67.2%
- Mechanical time constant: As low as 2.13 ms
- Rotor inertia: 0.96 g·cm²
- Nominal torque: Up to 5.45 mNm
Why it stands out: Despite its compact size, the XBD-1640 delivers high torque output and precise control, making it an excellent choice for applications demanding accuracy and reliability. Customization options—including winding customization, gearbox addition, and encoder integration—allow for further optimization to meet specific application requirements
Ideal applications: Robotics, medical devices, beauty equipment, precision instruments, and other space-constrained applications.
XBD-2245 – High Torque with Gearbox and Brake
The XBD-2245 is a high-performance coreless brushless DC motor designed specifically for applications where space is limited. With a brushless design offering superior efficiency and longer lifespan compared to traditional brushed motors, this model delivers high torque output for precise control and performance.
Key Specifications:
- Voltage options: 12V, 15V, 18V, 24V
- Maximum efficiency: Up to 74.8%
- Mechanical time constant: As low as 2.94 ms
- Rotor inertia: 2.18 g·cm²
- Weight: 84.8 g
- Stall torque: Up to 92.2 mNm
Why it stands out: The coreless design enables smooth and quiet operation, while low vibration ensures greater stability and accuracy. The motor can be customized with various winding, gearbox, and encoder options, offering exceptional flexibility in motor configuration.
Ideal applications: Robots, drones, medical equipment, power tools, precision instruments, and other applications requiring high torque in a compact form factor.
Beyond the Specs – What Makes Sinbad Different
Every Sinbad coreless motor is backed by a quality control team operating under Total Quality Management (TQM) principles, ensuring each step complies with rigorous standards. With low minimum order quantities (samples as few as 3–5 pieces available) and flexible customization options, Sinbad makes it easy for engineers and product developers to find—or build—the perfect motor for their application.
Since 2011, Sinbad Motor has been solely focused on coreless motor technology. That single-minded dedication means every product in the lineup benefits from over a decade of continuous refinement—not just in the lab, but in real-world applications across robotics, medical devices, drones, automotive, and beyond
Post time: Jul-03-2026