What are the main dimensions of a rotating electric machine?

The main dimensions of a rotating electric machine, such as an electric motor or generator, typically include:

1. Outer Diameter: This is the overall diameter of the machine, including its casing or frame. It’s crucial for determining the space required to accommodate the machine.

2. Length: This refers to the length of the machine from one end to the other, including any end-bells or attachments. It is essential for understanding the space the machine will occupy in its installation environment.

3. Shaft Diameter: This is the diameter of the machine’s shaft. It’s important for the fitting of couplings, pulleys, or other mechanical elements that will transmit the mechanical power.

4. Shaft Length: This includes the length of the shaft protruding from the machine body. It’s critical for the connection to the load (the device or mechanism the machine is driving).

5. Mounting Dimensions: These are specific to the machine’s mounting configuration (flange-mounted, foot-mounted, etc.) and include details like the bolt hole size and spacing. This dimension is key for securing the machine properly during installation.

6. Frame Size: Often, rotating machines are categorized by frame size, which is a standardized dimension that can give an indication of the machine’s power capacity, shaft height, and other critical dimensions.

Understanding these dimensions is critical when designing systems that incorporate rotating electric machines, ensuring they fit within the designated space, meet performance requirements, and are compatible with mechanical