Match making: finding the right motor for the right pump

• Book ID: 104316408
• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 420 KB
• Volume: 2002
• Category: Article
• ISSN: 0262-1762
• DOI: 10.1016/s0262-1762(02)80026-8

✦ Synopsis

Ideally, pumps and motors should go hand-in-hand, but sadly common misapprehensions and plain ignorance about motors often cause the user needless worry. Here, Slav puts your mind at rest by explaining the terms and examining some of the common themes when considering motors needed to drive centrifugal pumps and rotary pumps in general industry.

Early motors

These were 'Manufacturers Choice' but standardisation has made it easier for the maintenance team to repair and replace without recourse to the original supplier. Standard motors from 1 kW upwards are designated by a 'frame size. This is an agreed shorthand which indicates the physical size. Typically the frame size is in the form 'D 112 M'. The D indicates a general industrial motor, the number 112 indicates the height of the motor shaft above the mounting feet and the M indicates a medium length body.