Hose, Tubing & Fluid Conveyance Products worked example

Bend Radius Check with installed or routed bend radius of 3 in: a worked example

Here is what the math looks like when conditions slip. We hold every other input steady and drop installed or routed bend radius to 3 in, then walk the calculation through step by step. Check whether the installed bend radius of a hose or tubing assembly meets the manufacturer minimum bend radius, and see the margin above the minimum.

The inputs for this scenario

  • Installed or routed bend radius: 3 in (the input this scenario stresses; the baseline uses 6)
  • Minimum bend radius (manufacturer spec): 4.5 in (held at the documented default)
  • Reference bend radius: 4.5 in (held at the documented default)

Working through the calculation

  • The calculation starts from the formula this tool documents: Bend radius margin = installed bend radius - minimum bend radius.
  • Absolute margin works out to -1.5 in at these inputs, and this is the headline figure for the scenario.
  • Bend radius margin (in) works out to -33.33 in at these inputs.
  • Available amount works out to 3 value at these inputs.
  • Required amount works out to 4.5 value at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where installed or routed bend radius sits at 6 in and the headline result is 1.5 in, this scenario comes in 200% below the baseline at -1.5 in.
  • The practical read: the gap between this scenario and the baseline is entirely attributable to installed or routed bend radius, so recovering it is worth quantifying in dollars before considering equipment or staffing changes. It checks a single static bend radius; it does not account for dynamic flexing, twist, or the increased minimum radius required near fittings.

Results at a glance

  • Absolute margin: -1.5 in (headline result)
  • Bend radius margin (in): -33.33 in
  • Available amount: 3 value
  • Required amount: 4.5 value

Run it with your numbers

  • To rerun this with your own numbers, open the live Bend Radius Check calculator, set installed or routed bend radius to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.