Which part of the motor supports the shaft and houses the bearings?

• A. End Bells
• B. Housings
• C. Stator Core
• D. Rotor Cage

Answer: (A)

The end bells play a crucial role in the structure of an electric motor by providing support for the shaft while also housing the bearings. The end bells are located at both ends of the motor and are instrumental in ensuring that the shaft is securely mounted and aligned properly during operation. This alignment is vital for the smooth rotation of the rotor. The bearings located within the end bells allow the shaft to rotate freely while minimizing friction, which is essential for the efficient performance of the motor.

In contrast, housings typically refer to the outer case that encloses the motor components. The stator core is an integral part of the motor that produces magnetic fields necessary for operation but does not directly support the shaft or house the bearings. The rotor cage, found in some types of motors, relates to the rotor structure but again does not serve the functions of supporting and housing the shaft and bearings. By focusing on the specific functions of the end bells, it becomes evident why this choice is the most accurate answer to the question regarding motor structure.