Practical Balancing of Rotating Machinery

Derek Norfield (Author)

9781856174657, Elsevier Science

Hardback, published 8 March 2006

218 pages, Approx. 150 illustrations
21.6 x 13.8 x 2 cm, 0.43 kg

Rotating machinery (eg pumps, motors, compressors) is normally manufactured to precise measurements but there comes a point when the costs of manufacture mean that further precision is not cost-effective and thus any slight imbalance inherent in the machine will need to be attended to after manufacture. When such machinery is in operation, often at very high speeds of thousands of revs per minute, any imbalance will set up vibration and often noise. In addition, such imbalance will cause extra wear and loss of efficiency in the machine. The answer is to balance the affected parts of the machine so that it operates smoothly and efficiently.

This book is a practical account of such balancing techniques e.g how to balance a rotor, how to set up and verify performance of a balancing machine, and procedures for on-site balancing. In addition, other common causes of vibration will be covered e.g. misalignment, bad bearings and looseness.

This book is the distillation of a successful course run by the author and developed over 20 years. University engineering departments do not teach balancing techniques beyond the very basic, and there is a need for educators and engineers to have a practical book available on the topic.

Section 1: Introduction
The need for balancing
The history of balancing
Why do we balance
Balancing is not an additional expense!
Section 2: Balancing Basics
Vibration, causes and effects
In the beginning
Simple Vibration
Complex vibration
Why is vibration so bad?
What is the cause of vibration
Misalignment
Damaged bearings
Bent shaft
Turbulence.

Subject Areas: Acoustic & sound engineering [TTA], Steam engines [TGBN1]