• Geometric Tolerances/Home
  • Position Tolerance
    • Shaft:without modifier
    • Hole: without modifier
    • Composite Frames
    • Position + Orientation Tolerance
  • Position Tolerance with Modifiers
    • Shaft: M modifier
    • Hole: M modifier
    • Shaft: L modifier
    • Hole: L modifier
  • Orientation Tolerance
  • Flatness Tolerance
    • Flatness on a Resting Face
    • Flatness on a Feature of Size
  • Straightness Tolerance
  • Profile Tolerance
    • Equally Disposed
    • Unequally Disposed
    • Composite Frame
  • Concentricity & Runout
    • Concentricity Tolerance
    • Runout Tolerance

Concentricity Tolerance

The Concentricity tolerance helps an axis-to-axis alignment between the Feature under evaluation and the Datum, and is always expressed RFS. The gap variation as shown in the figure occurs as the axis of the Feature under measurement shifts with respect to the Datum axis. Effect of the Concentricity tolerance on the gap is shown in the animation.