How do you measure a wave spring?
Measuring a wave spring accurately is crucial for ensuring proper fit and performance in an application. Here are the key dimensions to measure:
1. Outside Diameter (OD)
- Measure the outermost edge of the spring across its widest point.
- Ensure the caliper is perpendicular to the spring for an accurate measurement.
2. Inside Diameter (ID)
- Measure the innermost edge of the spring across its narrowest point.
- The ID is typically smaller than the OD by twice the material thickness.
3. Free Height (Hf)
- Measure the total height of the spring when not under load.
- Use a caliper or height gauge to check this dimension.
4. Number of Turns (Nt)
- Count the total number of full 360-degree waves in the spring.
- Some wave springs have partial turns at the ends, so note these as well.
5. Wire Thickness (T) and Width (W)
- Thickness (T): Measure the thickness of the flat wire using a micrometer.
- Width (W): Measure the width of the wire strip from edge to edge.
6. Working Load and Deflection
- To verify the load capacity, compress the spring under a known force and measure the resulting height reduction.
Tools Needed:
