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What Kind of Grease is Used for Lubricating Coreless Motors

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Jun. 19, 2025
In high - end manufacturing fields such as intelligent robots, medical equipment, and precision instruments, coreless motors are widely adopted due to their advantages of fast response, low inertia, and low noise. However, this precision motor with a coreless structure has much higher performance requirements for lubricating grease than traditional motor systems.


Coreless motors are different from traditional motors with iron cores. They are driven to rotate by the interaction between electromagnetic induction and the magnetic field of the permanent magnet stator. This structure reduces rotational inertia and electromagnetic interference, enabling high - response and high - efficiency operation, and is especially suitable for application scenarios with narrow spaces and sensitive movements.


What Kind of Grease is Used for Lubricating Coreless Motors


Due to its precise internal structure and frequent start - stop of loads, coreless motors have the following pain points in terms of lubrication:


  • Extremely high lubrication fineness is required to ensure that the motor can run smoothly even under a small torque;

  • The lubricating grease needs to have excellent anti - wear properties and low - noise performance to reduce friction and wear between internal parts;

  • The particle size of ordinary lubricating grease is not fine enough, which may instead cause start - up obstruction or abnormal noise.


In response to the special needs of coreless motors, Baoxing has launched the BX - 800 series gearbox noise - reducing grease, focusing on solving the lubrication pain points of high - speed small motors. It uses fully synthetic base oil, with strong lubricity and low volatility;


It has excellent anti - wear and noise - reducing effects and is suitable for precision reduction mechanisms; The grease has high grinding precision, fine and evenly distributed particles, which can significantly reduce the operation resistance of coreless motors; It can replace many imported brands (XX brand) of grease, realizing domestic substitution with high cost - effectiveness. 


Whether for servo motors, lead screw systems or coreless motors, Baoxing can provide customized lubrication solutions. Welcome to call us for consultation~


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