FROM THE WORKSHOP

WORKSHOP: Handy tools for counting the revs

MEASUREMENT is something we all probably take for granted, but some items are tricky to measure. Shaft speed is one such measurement which can be difficult to measure directly.

Josh Giumelli
 Handy tools for counting revs

Handy tools for counting revs

Unless the rotational speed of the shaft is very slow, and can be counted visually, there is little chance of estimating an accurate result. Shaft speed is measured in revolutions per minute, or rpm, using a tachometer. The ability to measure rpm is vital when designing machinery, tuning it for best performance, or fault-fi nding when something is not operating as it should. This month, we look at the various ways of determining shaft speed and some handy tools to help us.

View the PDF report here: Handy tools for counting the revs 

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