What is one of the primary functions of the end frame in a DC motor?

The primary function of the end frame in a DC motor is to provide stability and support for the entire motor assembly. The end frames, also known as end bells or end covers, are structural components that not only secure the rotor (armature) in place but also ensure that the motor maintains its alignment and operational integrity during operation. They help in minimizing vibrations and mechanical stress, which can lead to wear and potential failure of the motor over time.

This stabilizing role is essential for the efficient functioning of the motor, as any misalignment could negatively impact performance and lead to issues like increased friction, noise, or overheating. While there are other components in a DC motor that might serve specific roles, the end frame is crucial for maintaining the overall physical structure and durability of the motor.