Application Solutions

# Eccentricity

## For Individuals Looking for Eccentricity Measurement Systems

When looking for the best way to measure eccentricity, there are a number of important factors to consider, including the type of measurement system and the installation environment. Selecting equipment that doesn't adequately meet your needs can lead to insufficient precision and increased man-hours during production. This site is designed to help users determine the best way to measure eccentricity with confidence.

## How to Measure Eccentricity

Find the best measurement method and the right equipment to measure "Eccentricity".

### Eccentricity measurement with a reflectance-type sensor

Example Application: Eccentricity measurement of high-precision rollers

#### Optimal measurement systemTriangulation Laser Displacement Sensor

The laser is pointed at the apex of the circle to capture fluctuations in distance through high-speed sampling.

##### KEY POINTS
• Measurement must be performed at a sampling rate of at least ten times the rotation speed.
• Errors increase as the shaft diameter decreases because the apex position shifts to the left or right due to eccentricity.

### Eccentricity measurment with a thrubeam-type sensor

Example Application: Eccentricity measurement of motor shafts

#### Optimal measurement systemThrubeam Optical Micrometer

Fluctuations in the edge positions of the roll are captured through high-speed sampling.

##### KEY POINTS
• The peak-to-peak value of the run-out is found using peak-to-peak hold or a similar function.
• Measurement must be performed at a sampling rate of at least ten times the rotation speed.

### Measurement of eccentricity at multiple points with thrubeam model

Example Application: Eccentricity measurement of sponge rollers

#### Optimal measurement systemThrubeam 2D Optical Micrometer

The eccentricity is measured by finding fluctuations at multiple specified point positions using the image obtained by the 2D optical projection method.

##### KEY POINTS
• The run-out of V grooves and protrusions in the circumference can be measured.
• The run-out of a point at a predetermined distance from the end can be measured.

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