P

Documentation/Modules/4.3 Bearing Selection

4.3 Bearing Selection

Load rating and life estimation

Standards catalog

Validation: indicative · Method band: formula

Open calculator

Indicative method: Indicative closed-form or numerical model

Assumptions

  • Linear elastic material behavior unless noted otherwise.
  • User is responsible for load combinations and load factors per the selected design code.

Limitations

  • Does not replace a licensed professional engineer or official code compliance review.

Engineering checks

CheckINDUSEUISO
Dynamic load rating utilizationimplemented———
Basic rating life L10implemented———

4.3 Bearing Selection (bearings)

Purpose: Rolling-element bearing equivalent load and L10 life screening.

Method: Closed-form (ISO 281 style)

P = X F_r + Y F_a, \quad L_{10} = \left(\frac{C}{P}\right)^3 \times 10^6 \text{ rev} $$[^iso-281-referenced-indicative-dynamic-capacity-a] **Inputs:** radial/axial load, speed, bearing type, material dynamic rating factor, required life, safety factor. **Outputs:** equivalent load, required $C$, expected life hours. **Design codes:** ISO 281 referenced; indicative dynamic capacity and L10 checks. **UI:** Legacy layout; unit profile. **Gaps:** Catalog coefficients simplified (deep groove, angular contact only); no temperature or contamination factors. --- [^iso-281-referenced-indicative-dynamic-capacity-a]: ISO 281 referenced; indicative dynamic capacity and L10 checks.
Maintainer note: Predominantly catalog/equation life calculations.