Question

When using a laser alignment system, what specific type of shaft misalignment is indicated if the dial indicator or laser sensor shows a positive reading at the 12 o&#x27;clock position and a negative reading at the 6 o&#x27;clock position across the coupling?

Accepted Answer

A positive reading at the 12 o&#x27;clock position and a negative reading at the 6 o&#x27;clock position across the coupling indicates a vertical angular misalignment where the shaft of the driven machine is pointing downward relative to the driver shaft. In laser or dial indicator alignment, angular misalignment occurs when the centerlines of two shafts are not parallel, meaning they would intersect if extended. Think of this like two flashlights pointed at each other; if one is tilted, their beams don&#x27;t meet squarely, creating an angle between them. Because the top (12 o&#x27;clock) measurement shows a gap that is wider or &#x27;positive&#x27; while the bottom (6 o&#x27;clock) shows a compression or &#x27;negative&#x27; value, the coupling faces are clearly tipped downward at the bottom. Correcting this requires adjusting the height of the machine&#x27;s feet or using shims to tilt the motor back into a parallel position with the driven equipment.

When using a laser alignment system, what specific type of shaft misalignment is indicated if the dial indicator or laser sensor shows a positive reading at the 12 o'clock position and a negative reading at the 6 o'clock position across the coupling?

A positive reading at the 12 o'clock position and a negative reading at the 6 o'clock position across the coupling indicates a vertical angular misalignment where the shaft of the driven machine is pointing downward relative to the driver shaft. In laser or dial indicator al....

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When using a laser alignment system, what specific type of shaft misalignment is indicated if the dial indicator or laser sensor shows a positive reading at the 12 o'clock position and a negative reading at the 6 o'clock position across the coupling?

A positive reading at the 12 o'clock position and a negative reading at the 6 o'clock position across the coupling indicates a vertical angular misalignment where the shaft of the driven machine is pointing downward relative to the driver shaft. In laser or dial indicator al....

Community Answers