FieldengMechanical & Motion
Bearing DN
Bearing speed screening value DN = bore (mm) × rpm.
Mechanical & Motion
Bearing speed screening value DN = bore (mm) × rpm.
App id: MECH-16. Reference version 1.0.
How to fill it
Fill the inputs. The tool shows the outputs.
On the tool screen, Calc is the working sheet. Presets stores values you reuse. Reference is the formula, assumptions, and provenance below.
Formula
DN = d_mm × N_rpmInputs
| Name | Unit |
|---|---|
| Bearing bore | mm |
| Rotational speed | rpm |
Outputs
| Name | Unit |
|---|---|
| DN (hero result) | 1 |
Diagnose
Observations are context. They do not pass or fail a structure. See Diagnose.
| When | Observation | Severity |
|---|---|---|
Every result | DN screening value | info |
frequency hz < 10 | Very low rotational speed | caution |
frequency hz > 20000 | Very high rotational speed | caution |
Assumptions
- Does not apply a universal “safe DN” threshold.
Provenance
- DN is a screening metric. Limits come from the bearing manufacturer.