9W 12V Frameless Brushless DC Motor, 550 rpm

The lightweight frameless brushless DC motor features a voltage rating of 12V and an efficient 9W power output, this motor offers excellent energy efficiency without sacrificing performance. Its 550 RPM speed is tailored for smooth, stable operation, making it an excellent choice for projects requiring reliable and quiet motion.

Specifications

• Model: BLDC-WK3505
• Rated Power: 9.48W
• Nominal Voltage: 12V
• Nominal Current: 0.79A
• Nominal Torque: 0.07 Nm
• Nominal Speed: 587 rpm
• Max Speed: 890 rpm
• Stall Torque: 0.11 Nm
• Stall Current: 1.2A
• Winding Turs of Motor: 40T
• Phase to Phase Resistance: 6.5Ω
• Phase to Phase Inductance: 2.35Mh
• Speed Constant: 74 rpm/V
• Torque Constant: 0.09 Nm/A
• Rotor Inertia: 56 gcm²
• Number of Pole Pairs: 11
• Motor Weight: 24/32g
• Working Temperature: -20~80℃
• Max Demagnetize Temperature: 120℃

Features

• The frameless configuration allows seamless integration into applications, saving space and offering greater flexibility in custom designs.
• This frameless brushless DC motor with a rotational speed of 587 rpm, is ideal for applications requiring precise control and smooth operation at lower speeds.
• The frameless BLDC motor delivers a power output of 9W while operating at 12V, ensuring energy-efficient performance with minimal heat generation.
• Brushless design minimizes maintenance, reduces wear and tear, and enhances durability for prolonged operational life.
• Its frameless construction and low-speed operation make it perfect for direct-drive setups, eliminating the need for additional gearing mechanisms.
• Frameless brushless motors offer the flexibility to design and customize your motor housing, making them ideal for DIY and tailored engineering projects.

Dimensions (Unit: mm)

Applications

Frameless Brushless DC Motors are designed for seamless integration into systems where space, weight, and precision are critical. Due to their high efficiency, compact design, and reliability, these motors are commonly used in robotics, drones, medical devices, and industrial automation. 

Tips: How does a frameless BLDC motor work?

A frameless BLDC (Brushless DC) motor works based on the principle of electromagnetic induction. The stator, which contains copper windings, generates a rotating magnetic field when powered by an electronic controller. This magnetic field interacts with permanent magnets on the rotor, causing it to rotate. The rotation is precise and efficient, thanks to the controller, which ensures the correct timing of the electrical signals for optimal performance.

Since the motor is frameless, it does not include housing or bearings. This design allows it to be integrated directly into a larger system, such as a robot or drone, where the system’s structure supports the rotor and stator. This flexibility enables high customization and compactness while delivering excellent torque and speed control.