Bearings, Gears & Power Transmission worked example

Bearing Preload Setup Time at 22% shim and verification allowance: a worked example

This worked example runs the bearing preload setup time numbers for a tougher week than the baseline: 22% shim and verification allowance instead of the typical 30%. Estimate preload setup hours from bearing sets to adjust, proven setup rate, and allowance for shimming, torque checks, and verification.

The inputs for this scenario

  • Bearing sets to preload: 54 bearing sets (held at the documented default)
  • Verified preload setup rate: 6 sets / hr (held at the documented default)
  • Shim and verification allowance: 22 % (the input this scenario stresses; the baseline uses 30)

Working through the calculation

  • The calculation starts from the formula this tool documents: Base preload setup time = bearing sets to preload รท verified preload setup rate.
  • Required bearing preload setup time works out to 10.98 hr at these inputs, and this is the headline figure for the scenario.
  • Base preload setup time works out to 9 hr at these inputs.
  • Shim and verification allowance works out to 22 % at these inputs.
  • Verified preload setup rate works out to 6 sets / hr at these inputs.

How this compares with the baseline

  • Against the tool's baseline example, where shim and verification allowance sits at 30% and the headline result is 11.7 hr, this scenario comes in 6.15% below the baseline at 10.98 hr.
  • Use it when staffing a preload station, scheduling the operation, or quoting assemblies with a controlled preload step. A result at this level usually justifies acting on the stressed input before touching anything else, because every other figure in the table is downstream of it.

Results at a glance

  • Required bearing preload setup time: 10.98 hr (headline result)
  • Base preload setup time: 9 hr
  • Shim and verification allowance: 22 %
  • Verified preload setup rate: 6 sets / hr

Run it with your numbers

  • To rerun this with your own numbers, open the live Bearing Preload Setup Time calculator, set shim and verification allowance to your actual value, and adjust the remaining inputs to match your operation.

Last reviewed 2026-05-12.