Coaxial Indicator

A coaxial indicator is a precision measurement tool used in machine shops and manufacturing settings to align a cylindrical feature, such as a workpiece or a machine spindle, with high accuracy. It helps ensure that the cylindrical feature is centered or coaxial with respect to the axis of rotation. Coaxial indicators are commonly used in applications where precise concentricity is critical, such as in machining, turning, and grinding operations.

Here’s how a coaxial indicator works and is used:

  1. Place the coaxial indicator on the machine’s spindle or tool holder, ensuring that it is securely mounted.
  2. Adjust the stylus to make light contact with the surface of the cylindrical feature to be measured.
  3. Rotate the cylindrical feature or spindle, and the indicator will detect any runout or misalignment. The dial or digital display will show the amount of deviation from perfect concentricity.
  4. By making adjustments to the machine setup or workpiece, the operator can minimize the deviation and align the cylindrical feature with the spindle’s axis. This process ensures that the workpiece rotates or moves in a more concentric manner, which is crucial for achieving precision in machining operations.

Coaxial indicators are valuable tools for achieving high levels of accuracy and precision in machining and manufacturing processes. They are commonly used in conjunction with other tools like dial test indicators and precision measurement instruments to ensure that workpieces meet tight tolerances and quality standards.