Construction Machinery & Attachments worked example

Pin/Bushing Fit Margin with available pin and bushing fit clearance of 0.05 units: a worked example

Push available pin and bushing fit clearance up to 0.05 units and the picture changes. This example computes every intermediate figure at that operating point. checking go/no-go fit margin for attachment pivot joints

The inputs for this scenario

  • Available pin/bushing fit clearance: 0.05 units (raised for this scenario; the documented default is 0.02)
  • Required minimum fit clearance: 0.01 units (unchanged)
  • Fit margin reference tolerance: 0.02 units (unchanged)

Working through the calculation

  • Applying the documented formula (Fit clearance above requirement = available pin/bushing fit clearance - required minimum fit clearance) to the inputs above produces each figure below.
  • At this operating point the engine returns 190 % for pin/bushing fit margin, the number this scenario is built around.
  • At this operating point the engine returns 0.04 value for fit clearance above requirement.
  • At this operating point the engine returns 0.05 value for available pin/bushing fit clearance.
  • At this operating point the engine returns 0.01 value for required minimum fit clearance.

How this compares with the baseline

  • Against the tool's baseline example, where available pin and bushing fit clearance sits at 0.02 units and the headline result is 30 %, this scenario comes in 533% above the baseline at 190 %.
  • It computes the clearance above the required minimum and expresses it as a percentage of a reference tolerance band. The value of this scenario is the size of the gap it exposes: that gap, priced out over a year, is the budget you can justify spending to close it.

Results at a glance

  • pin/bushing fit margin: 190 % (headline result)
  • fit clearance above requirement: 0.04 value
  • available pin/bushing fit clearance: 0.05 value
  • required minimum fit clearance: 0.01 value

Run it with your numbers

  • Every input above is editable in the live Pin/Bushing Fit Margin calculator, which recalculates instantly and can be shared with the inputs intact.

Last reviewed 2026-05-12.