What happens if the motor stator isn't sealed with glue?
The motor stator is one of the crucial components of an electric motor. It works in conjunction with the motor rotor to ensure the motor operates smoothly and efficiently. A well-designed motor stator can effectively enhance the motor’s power and efficiency while also reducing vibration and noise.
Shanghai Hinnel
2025/12/25
If the stator is not encapsulated with glue, it will directly affect the motor. Stability, lifespan, and operational reliability The specific issues can be categorized as follows:
· Insulation performance degrades, easily leading to short-circuit faults.
· Reduced cooling efficiency leads to excessive motor temperature rise.
· Insufficient structural strength and poor vibration resistance.
· Worsened chemical resistance and weather resistance
Motor stator potting What advantages does it have:
1. Enhance the mechanical strength of the stator windings: Braking force and inertia can cause the motor to vibrate. Prolonged vibration may loosen components such as bolts and nuts. Stator potting can fill the gaps between the stator windings and the stator core, thereby increasing the tightness of the connected components. Improve the motor's insulation performance.
2. Improve thermal performance: When the motor is operating, the reduced impedance of the coil generates a certain amount of heat, causing the motor's temperature to rise continuously. Encapsulating the coil with adhesive can effectively and tightly wrap it, preventing the coil from spreading or loosening, which could otherwise lead to poor natural ventilation and result in overheating or even burnout during machine operation.
3. Reduce noise and electromagnetic interference Motors generate noise during operation, primarily due to magnetic and structural vibrations that occur when the motor is running. Potting can reduce looseness and play inside the motor, thereby effectively lowering its noise level.
4. Environmentally resistant, chemically corrosion-resistant: The motor stator is one of the critical components of an electric motor. When exposed for extended periods to humid, high-temperature, and high-humidity environments, potting can enhance the structural strength of the motor and protect it against erosion from external chemicals such as acids, alkalis, oil stains, and solvents. Additionally, it provides resistance to harsh climatic conditions—including exposure to sunlight, rain, and sudden temperature changes—thereby ensuring optimal motor performance and extending its service life.

Motor stator potting compound How to use:
I. Preliminary Preparation
Before starting the potting process, the motor stator must be thoroughly cleaned to ensure its surface is free of dust, oil stains, and other impurities. This is a critical prerequisite for achieving an effective potting result—its purpose is to remove surface contaminants from the stator, thereby preventing bubbles and poor adhesion.
II. Potting Operation
During the potting process, it’s essential to ensure that the adhesive is evenly applied to the stator surface, avoiding any areas that are either left uncoated or have uneven thickness. Additionally, the amount of potting adhesive applied should be moderate—too much or too little can both adversely affect the stator’s performance.
III. Solidification Treatment
After potting is completed, the stator needs to undergo a curing process. The purpose of this step is to ensure that the potting compound fully cures and forms a strong bond with the stator’s surface. The curing time and temperature must be strictly controlled according to the instructions provided with the selected potting compound to guarantee that the curing achieves the desired results.
Stator potting is an important process step in motor manufacturing, and its role and significance cannot be overlooked. It can enhance the mechanical strength of the stator windings, improve the motor’s heat dissipation performance, and protect against moisture and corrosion. The implementation of stator potting is not complicated—it simply involves a few straightforward steps: preparatory work, applying the adhesive, potting the stator, and allowing it to cure. We hope this article provides you with valuable insights into stator potting for motors.
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